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liquidation_price formula organize and comment clean up
This commit is contained in:
Sam Germain
parent
387a9fbf36
commit
7abffee755
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@ -12,69 +12,59 @@ def liquidation_price(
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trading_mode: TradingMode,
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mm_ratio: float,
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collateral: Optional[Collateral] = Collateral.ISOLATED,
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# Binance
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maintenance_amt: Optional[float] = None,
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# Binance and Gateio
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wallet_balance: Optional[float] = None,
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position: Optional[float] = None, # Absolute value of position size
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# Gateio & Okex
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taker_fee_rate: Optional[float] = None,
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# Okex
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liability: Optional[float] = None,
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interest: Optional[float] = None,
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position_assets: Optional[float] = None, # * Might be same as position
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# * Cross only
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mm_ex_1: Optional[float] = 0.0, # Cross only
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upnl_ex_1: Optional[float] = 0.0, # Cross only
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maintenance_amt: Optional[float] = None, # (Binance)
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position: Optional[float] = None, # (Binance and Gateio) Absolute value of position size
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wallet_balance: Optional[float] = None, # (Binance and Gateio)
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taker_fee_rate: Optional[float] = None, # (Gateio & Okex)
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liability: Optional[float] = None, # (Okex)
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interest: Optional[float] = None, # (Okex)
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position_assets: Optional[float] = None, # * (Okex) Might be same as position
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mm_ex_1: Optional[float] = 0.0, # (Binance) Cross only
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upnl_ex_1: Optional[float] = 0.0, # (Binance) Cross only
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) -> Optional[float]:
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'''
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wallet_balance
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In Cross margin mode, WB is crossWalletBalance
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In Isolated margin mode, WB is isolatedWalletBalance of the isolated position,
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TMM=0, UPNL=0, substitute the position quantity, MMR, cum into the formula to calculate.
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Under the cross margin mode, the same ticker/symbol,
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both long and short position share the same liquidation price except in the isolated mode.
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Under the isolated mode, each isolated position will have different liquidation prices
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depending on the margin allocated to the positions.
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position
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Absolute value of position size (in base currency)
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# Binance
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maintenance_amt (cumb)
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Maintenance Amount of position
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# Gateio & okex & binance
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mm_ratio
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[assets in the position - (liability +interest) * mark price] /
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(maintenance margin + liquidation fee) (okex)
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"""
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:param exchange_name:
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:param open_rate: (EP1) Entry price of position
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:param is_short: True if the trade is a short, false otherwise
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:param leverage: The amount of leverage on the trade
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:param trading_mode: SPOT, MARGIN, FUTURES, etc.
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:param position: Absolute value of position size (in base currency)
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:param mm_ratio: (MMR)
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Okex: [assets in the position - (liability +interest) * mark price] /
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(maintenance margin + liquidation fee)
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# * Note: Binance's formula specifies maintenance margin rate which is mm_ratio * 100%
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:param collateral: Either ISOLATED or CROSS
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# Gateio & okex
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taker_fee_rate
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# * Binance
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:param maintenance_amt: (CUM) Maintenance Amount of position
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# Okex
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liability
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# * Binance and Gateio
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:param wallet_balance: (WB)
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Cross-Margin Mode: crossWalletBalance
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Isolated-Margin Mode: isolatedWalletBalance
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:param position: Absolute value of position size (in base currency)
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# * Gateio & Okex
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:param taker_fee_rate:
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# * Okex
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:param liability:
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Initial liabilities + deducted interest
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• Long positions: Liability is calculated in quote currency.
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• Short positions: Liability is calculated in trading currency.
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interest
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:param interest:
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Interest that has not been deducted yet.
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position_assets
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:param position_assets:
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Total position assets – on-hold by pending order
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# * Cross only
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mm_ex_1
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Maintenance Margin of all other contracts, excluding Contract 1
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If it is an isolated margin mode, then TMM=0，UPNL=0
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upnl_ex_1
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Unrealized PNL of all other contracts, excluding Contract 1
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If it is an isolated margin mode, then UPNL=0
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'''
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# * Cross only (Binance)
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:param mm_ex_1: (TMM)
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Cross-Margin Mode: Maintenance Margin of all other contracts, excluding Contract 1
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Isolated-Margin Mode: 0
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:param upnl_ex_1: (UPNL)
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Cross-Margin Mode: Unrealized PNL of all other contracts, excluding Contract 1.
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Isolated-Margin Mode: 0
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"""
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if trading_mode == TradingMode.SPOT:
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return None
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@ -85,20 +75,14 @@ def liquidation_price(
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)
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if exchange_name.lower() == "binance":
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if (
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wallet_balance is None or
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if (wallet_balance is None or maintenance_amt is None or position is None):
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# mm_ex_1 is None or # * Cross only
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# upnl_ex_1 is None or # * Cross only
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maintenance_amt is None or
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position is None or
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mm_ratio is None
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):
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raise OperationalException(
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f"Parameters wallet_balance, mm_ex_1, upnl_ex_1, "
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f"maintenance_amt, position, mm_ratio "
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f"is required by liquidation_price when exchange is {exchange_name.lower()}")
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# Suppress incompatible type "Optional[float]"; expected "float" as the check exists above.
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f"Parameters wallet_balance, maintenance_amt, position"
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f"are required by liquidation_price when exchange is {exchange_name.lower()}"
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)
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# Suppress incompatible type "Optional[...]"; expected "..." as the check exists above.
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return binance(
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open_rate=open_rate,
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is_short=is_short,
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@ -111,21 +95,12 @@ def liquidation_price(
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maintenance_amt=maintenance_amt, # type: ignore
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position=position,
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mm_ratio=mm_ratio,
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) # type: ignore
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elif exchange_name.lower() == "kraken":
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return kraken(open_rate, is_short, leverage, trading_mode, collateral)
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elif exchange_name.lower() == "ftx":
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return ftx(open_rate, is_short, leverage, trading_mode, collateral)
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)
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elif exchange_name.lower() == "gateio":
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if (
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not wallet_balance or
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not position or
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not mm_ratio or
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not taker_fee_rate
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):
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if (not wallet_balance or not position or not taker_fee_rate):
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raise OperationalException(
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f"{exchange_name} {collateral} {trading_mode} requires parameters "
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f"wallet_balance, contract_size, num_contracts, mm_ratio and taker_fee"
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f"Parameters wallet_balance, position, taker_fee_rate"
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f"are required by liquidation_price when exchange is {exchange_name.lower()}"
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)
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else:
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return gateio(
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@ -139,16 +114,10 @@ def liquidation_price(
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taker_fee_rate=taker_fee_rate
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)
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elif exchange_name.lower() == "okex":
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if (
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not mm_ratio or
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not liability or
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not interest or
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not taker_fee_rate or
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not position_assets
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):
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if (not liability or not interest or not taker_fee_rate or not position_assets):
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raise OperationalException(
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f"{exchange_name} {collateral} {trading_mode} requires parameters "
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f"mm_ratio, liability, interest, taker_fee_rate, position_assets"
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f"Parameters liability, interest, taker_fee_rate, position_assets"
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f"are required by liquidation_price when exchange is {exchange_name.lower()}"
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)
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else:
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return okex(
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@ -161,9 +130,11 @@ def liquidation_price(
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taker_fee_rate=taker_fee_rate,
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position_assets=position_assets,
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)
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raise OperationalException(
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f"liquidation_price is not implemented for {exchange_name}"
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)
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elif exchange_name.lower() == "ftx":
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return ftx(open_rate, is_short, leverage, trading_mode, collateral)
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elif exchange_name.lower() == "kraken":
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return kraken(open_rate, is_short, leverage, trading_mode, collateral)
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raise OperationalException(f"liquidation_price is not implemented for {exchange_name}")
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def exception(
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@ -172,10 +143,10 @@ def exception(
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collateral: Collateral,
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):
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"""
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Raises an exception if exchange used doesn't support desired leverage mode
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:param exchange: Name of the exchange
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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Raises an exception if exchange used doesn't support desired leverage mode
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:param exchange: Name of the exchange
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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raise OperationalException(
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@ -187,132 +158,79 @@ def binance(
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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mm_ratio: float,
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collateral: Collateral,
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maintenance_amt: float,
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wallet_balance: float,
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position: float,
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mm_ex_1: float,
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upnl_ex_1: float,
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maintenance_amt: float,
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position: float,
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mm_ratio: float,
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):
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"""
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Calculates the liquidation price on Binance
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MARGIN: https://www.binance.com/en/support/faq/f6b010588e55413aa58b7d63ee0125ed
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PERPETUAL: https://www.binance.com/en/support/faq/b3c689c1f50a44cabb3a84e663b81d93
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:param open_rate: (EP1) Entry Price of position (one-way mode)
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:param is_short: true or false
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:param leverage: leverage in float
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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:param wallet_balance: Wallet Balance is crossWalletBalance in Cross-Margin Mode.
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Wallet Balance is isolatedWalletBalance in Isolated Margin Mode
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:param mm_ex_1: Maintenance Margin of all other contracts,
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excluding Contract 1. If it is an isolated margin mode, then TMM=0
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:param upnl_ex_1: Unrealized PNL of all other contracts, excluding Contract 1.
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If it is an isolated margin mode, then UPNL=0
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:param maintenance_amt: Maintenance Amount of position (one-way mode)
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:param trading_mode: SPOT, MARGIN, FUTURES
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:param mm_ratio: (MMR) Maintenance margin rate of position (one-way mode)
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:param collateral: CROSS, ISOLATED
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:param maintenance_amt: (CUM) Maintenance Amount of position (one-way mode)
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:param position: Absolute value of position size (one-way mode)
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:param open_rate: Entry Price of position (one-way mode)
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:param mm_ratio: Maintenance margin rate of position (one-way mode)
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:param wallet_balance: (WB)
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Cross-Margin Mode: crossWalletBalance
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Isolated-Margin Mode: isolatedWalletBalance
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TMM=0, UPNL=0, substitute the position quantity, MMR, cum into the formula to calculate.
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Under the cross margin mode, the same ticker/symbol,
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both long and short position share the same liquidation price except in isolated mode.
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Under the isolated mode, each isolated position will have different liquidation prices
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depending on the margin allocated to the positions.
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:param mm_ex_1: (TMM)
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Cross-Margin Mode: Maintenance Margin of all other contracts, excluding Contract 1
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Isolated-Margin Mode: 0
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:param upnl_ex_1: (UPNL)
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Cross-Margin Mode: Unrealized PNL of all other contracts, excluding Contract 1.
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Isolated-Margin Mode: 0
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"""
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wb = wallet_balance
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tmm_1 = 0.0 if collateral == Collateral.ISOLATED else mm_ex_1
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upnl_1 = 0.0 if collateral == Collateral.ISOLATED else upnl_ex_1
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cum_b = maintenance_amt
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side_1 = -1 if is_short else 1
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position = abs(position)
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ep1 = open_rate
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mmr_b = mm_ratio
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cross_vars = upnl_ex_1 - mm_ex_1 if collateral == Collateral.CROSS else 0.0
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if trading_mode == TradingMode.MARGIN and collateral == Collateral.CROSS:
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# https://www.binance.com/en/support/faq/f6b010588e55413aa58b7d63ee0125ed
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# ! Not Implemented
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exception("binance", trading_mode, collateral)
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elif trading_mode == TradingMode.FUTURES and collateral == Collateral.ISOLATED:
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# https://www.binance.com/en/support/faq/b3c689c1f50a44cabb3a84e663b81d93
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# Liquidation Price of USDⓈ-M Futures Contracts Isolated
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if trading_mode == TradingMode.FUTURES:
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return (wallet_balance + cross_vars + maintenance_amt - (side_1 * position * open_rate)) / (
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(position * mm_ratio) - (side_1 * position))
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# Isolated margin mode, then TMM=0，UPNL=0
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return (wb + cum_b - side_1 * position * ep1) / (
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position * mmr_b - side_1 * position)
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elif trading_mode == TradingMode.FUTURES and collateral == Collateral.CROSS:
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# https://www.binance.com/en/support/faq/b3c689c1f50a44cabb3a84e663b81d93
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# Liquidation Price of USDⓈ-M Futures Contracts Cross
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# Isolated margin mode, then TMM=0，UPNL=0
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# * Untested
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return (wb - tmm_1 + upnl_1 + cum_b - side_1 * position * ep1) / (
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position * mmr_b - side_1 * position)
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# If nothing was returned
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exception("binance", trading_mode, collateral)
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def kraken(
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open_rate: float,
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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collateral: Collateral
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# ...
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):
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"""
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Calculates the liquidation price on Kraken
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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if collateral == Collateral.CROSS:
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if trading_mode == TradingMode.MARGIN:
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exception("kraken", trading_mode, collateral)
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# https://support.kraken.com/hc/en-us/articles/203325763-Margin-Call-Level-and-Margin-Liquidation-Level
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elif trading_mode == TradingMode.FUTURES:
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exception("kraken", trading_mode, collateral)
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# If nothing was returned
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exception("kraken", trading_mode, collateral)
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def ftx(
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open_rate: float,
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is_short: bool,
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leverage: float,
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trading_mode: TradingMode,
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collateral: Collateral
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# ...
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):
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"""
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Calculates the liquidation price on FTX
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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"""
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if collateral == Collateral.CROSS:
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exception("ftx", trading_mode, collateral)
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# If nothing was returned
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exception("ftx", trading_mode, collateral)
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def gateio(
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open_rate: float,
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is_short: bool,
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trading_mode: TradingMode,
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collateral: Collateral,
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wallet_balance: float,
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position: float,
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mm_ratio: float,
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collateral: Collateral,
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position: float,
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wallet_balance: float,
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taker_fee_rate: float,
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is_inverse: bool = False
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):
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"""
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Calculates the liquidation price on Gate.io
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PERPETUAL: https://www.gate.io/help/futures/perpetual/22160/calculation-of-liquidation-price
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:param open_rate: Entry Price of position
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:param is_short: True for short trades
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:param trading_mode: spot, margin, futures
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:param collateral: cross, isolated
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:param wallet_balance: Also called margin
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:param trading_mode: SPOT, MARGIN, FUTURES
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:param mm_ratio: Viewed in contract details
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:param collateral: CROSS, ISOLATED
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:param position: size of position in base currency
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contract_size / num_contracts
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contract_size: How much one contract is worth
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num_contracts: Also called position
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:param mm_ratio: Viewed in contract details
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:param wallet_balance: Also called margin
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:param taker_fee_rate:
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:param is_inverse: True if settle currency matches base currency
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@ -320,16 +238,13 @@ def gateio(
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'±' in the formula refers to the direction of the contract,
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go long refers to '-'
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go short refers to '+'
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Position refers to the number of contracts.
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Maintenance Margin Ratio and Contract Multiplier can be viewed in the Contract Details.
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https://www.gate.io/help/futures/perpetual/22160/calculation-of-liquidation-price
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"""
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if trading_mode == TradingMode.FUTURES and collateral == Collateral.ISOLATED:
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if is_inverse:
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raise OperationalException(
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"Freqtrade does not support inverse contracts at the moment")
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# ! Not implemented
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raise OperationalException("Freqtrade does not support inverse contracts at the moment")
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value = wallet_balance / position
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mm_ratio_taker = (mm_ratio + taker_fee_rate)
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@ -344,24 +259,40 @@ def gateio(
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def okex(
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is_short: bool,
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trading_mode: TradingMode,
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mm_ratio: float,
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collateral: Collateral,
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taker_fee_rate: float,
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liability: float,
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interest: float,
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mm_ratio: float,
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taker_fee_rate: float,
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position_assets: float
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):
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'''
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https://www.okex.com/support/hc/en-us/articles/
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PERPETUAL: https://www.okex.com/support/hc/en-us/articles/
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360053909592-VI-Introduction-to-the-isolated-mode-of-Single-Multi-currency-Portfolio-margin
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Initial liabilities + deducted interest
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Long positions: Liability is calculated in quote currency.
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Short positions: Liability is calculated in trading currency.
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interest: Interest that has not been deducted yet.
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Margin ratio
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Long: [position_assets - (liability + interest) / mark_price] / (maintenance_margin + fees)
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Short: [position_assets - (liability + interest) * mark_price] / (maintenance_margin + fees)
|
||||
:param is_short: True if the position is short, false otherwise
|
||||
:param trading_mode: SPOT, MARGIN, FUTURES
|
||||
:param mm_ratio:
|
||||
long: [position_assets - (liability + interest) / mark_price] / (maintenance_margin + fees)
|
||||
short: [position_assets - (liability + interest) * mark_price] / (maintenance_margin + fees)
|
||||
:param collateral: CROSS, ISOLATED
|
||||
:param taker_fee_rate:
|
||||
:param liability: Initial liabilities + deducted interest
|
||||
long: Liability is calculated in quote currency
|
||||
short: Liability is calculated in trading currency
|
||||
:param interest: Interest that has not been deducted yet
|
||||
:param position_assets: Total position assets - on-hold by pending order
|
||||
|
||||
Total: The number of positive assets on the position (including margin).
|
||||
long: with trading currency as position asset.
|
||||
short: with quote currency as position asset.
|
||||
|
||||
Est. liquidation price
|
||||
long: (liability + interest）* (1 + maintenance margin ratio) *
|
||||
(1 + taker fee rate) / position assets
|
||||
short: (liability + interest）* (1 + maintenance margin ratio) *
|
||||
(1 + taker fee rate)
|
||||
|
||||
'''
|
||||
if trading_mode == TradingMode.FUTURES and collateral == Collateral.ISOLATED:
|
||||
if is_short:
|
||||
|
|
@ -371,18 +302,55 @@ def okex(
|
|||
else:
|
||||
exception("okex", trading_mode, collateral)
|
||||
|
||||
# if __name__ == '__main__':
|
||||
# print(liquidation_price(
|
||||
# "binance",
|
||||
# 32481.980,
|
||||
# False,
|
||||
# 1,
|
||||
# TradingMode.FUTURES,
|
||||
# Collateral.ISOLATED,
|
||||
# 1535443.01,
|
||||
# 356512.508,
|
||||
# 0.0,
|
||||
# 16300.000,
|
||||
# 109.488,
|
||||
# 0.025
|
||||
# ))
|
||||
|
||||
def ftx(
|
||||
open_rate: float,
|
||||
is_short: bool,
|
||||
leverage: float,
|
||||
trading_mode: TradingMode,
|
||||
collateral: Collateral
|
||||
# ...
|
||||
):
|
||||
"""
|
||||
# ! Not Implemented
|
||||
Calculates the liquidation price on FTX
|
||||
:param open_rate: Entry price of position
|
||||
:param is_short: True if the trade is a short, false otherwise
|
||||
:param leverage: The amount of leverage on the trade
|
||||
:param trading_mode: SPOT, MARGIN, FUTURES, etc.
|
||||
:param collateral: Either ISOLATED or CROSS
|
||||
"""
|
||||
if collateral == Collateral.CROSS:
|
||||
exception("ftx", trading_mode, collateral)
|
||||
|
||||
# If nothing was returned
|
||||
exception("ftx", trading_mode, collateral)
|
||||
|
||||
|
||||
def kraken(
|
||||
open_rate: float,
|
||||
is_short: bool,
|
||||
leverage: float,
|
||||
trading_mode: TradingMode,
|
||||
collateral: Collateral
|
||||
# ...
|
||||
):
|
||||
"""
|
||||
# ! Not Implemented
|
||||
MARGIN: https://support.kraken.com/hc/en-us/articles/203325763-Margin-Call-Level-and-Margin-Liquidation-Level
|
||||
|
||||
:param open_rate: Entry price of position
|
||||
:param is_short: True if the trade is a short, false otherwise
|
||||
:param leverage: The amount of leverage on the trade
|
||||
:param trading_mode: SPOT, MARGIN, FUTURES, etc.
|
||||
:param collateral: Either ISOLATED or CROSS
|
||||
"""
|
||||
|
||||
if collateral == Collateral.CROSS:
|
||||
if trading_mode == TradingMode.MARGIN:
|
||||
exception("kraken", trading_mode, collateral)
|
||||
elif trading_mode == TradingMode.FUTURES:
|
||||
exception("kraken", trading_mode, collateral)
|
||||
|
||||
# If nothing was returned
|
||||
exception("kraken", trading_mode, collateral)
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user