diff --git a/pkg/exchange/binance/convert.go b/pkg/exchange/binance/convert.go
index bb6a09a92..0385ac338 100644
--- a/pkg/exchange/binance/convert.go
+++ b/pkg/exchange/binance/convert.go
@@ -342,7 +342,7 @@ func convertSubscription(s types.Subscription) string {
 	return fmt.Sprintf("%s@%s", strings.ToLower(s.Symbol), s.Channel)
 }
 
-func convertPremiumIndex(index *futures.PremiumIndex) (*PremiumIndex, error) {
+func convertPremiumIndex(index *futures.PremiumIndex) (*types.PremiumIndex, error) {
 	markPrice, err := fixedpoint.NewFromString(index.MarkPrice)
 	if err != nil {
 		return nil, err
@@ -356,7 +356,7 @@ func convertPremiumIndex(index *futures.PremiumIndex) (*PremiumIndex, error) {
 	nextFundingTime := time.Unix(0, index.NextFundingTime*int64(time.Millisecond))
 	t := time.Unix(0, index.Time*int64(time.Millisecond))
 
-	return &PremiumIndex{
+	return &types.PremiumIndex{
 		Symbol:          index.Symbol,
 		MarkPrice:       markPrice,
 		NextFundingTime: nextFundingTime,
diff --git a/pkg/exchange/binance/exchange.go b/pkg/exchange/binance/exchange.go
index 3caaba14a..e136dd12b 100644
--- a/pkg/exchange/binance/exchange.go
+++ b/pkg/exchange/binance/exchange.go
@@ -885,22 +885,7 @@ func (e *Exchange) BatchQueryKLines(ctx context.Context, symbol string, interval
 	return allKLines, nil
 }
 
-type FundingRate struct {
-	FundingRate fixedpoint.Value
-	FundingTime time.Time
-	Time        time.Time
-}
-
-type PremiumIndex struct {
-	Symbol          string           `json:"symbol"`
-	MarkPrice       fixedpoint.Value `json:"markPrice"`
-	LastFundingRate fixedpoint.Value `json:"lastFundingRate"`
-	NextFundingTime time.Time        `json:"nextFundingTime"`
-	Time            time.Time        `json:"time"`
-}
-
-
-func (e *Exchange) QueryPremiumIndex(ctx context.Context, symbol string) (*PremiumIndex, error) {
+func (e *Exchange) QueryPremiumIndex(ctx context.Context, symbol string) (*types.PremiumIndex, error) {
 	futuresClient := binance.NewFuturesClient(e.key, e.secret)
 
 	// when symbol is set, only one index will be returned.
@@ -912,7 +897,7 @@ func (e *Exchange) QueryPremiumIndex(ctx context.Context, symbol string) (*Premi
 	return convertPremiumIndex(indexes[0])
 }
 
-func (e *Exchange) QueryFundingRateHistory(ctx context.Context, symbol string) (*FundingRate, error) {
+func (e *Exchange) QueryFundingRateHistory(ctx context.Context, symbol string) (*types.FundingRate, error) {
 	futuresClient := binance.NewFuturesClient(e.key, e.secret)
 	rates, err := futuresClient.NewFundingRateService().
 		Symbol(symbol).
@@ -932,7 +917,7 @@ func (e *Exchange) QueryFundingRateHistory(ctx context.Context, symbol string) (
 		return nil, err
 	}
 
-	return &FundingRate{
+	return &types.FundingRate{
 		FundingRate: fundingRate,
 		FundingTime: time.Unix(0, rate.FundingTime*int64(time.Millisecond)),
 		Time:        time.Unix(0, rate.Time*int64(time.Millisecond)),
diff --git a/pkg/strategy/techsignal/strategy.go b/pkg/strategy/techsignal/strategy.go
index 6f6d4d2fe..53c23d56e 100644
--- a/pkg/strategy/techsignal/strategy.go
+++ b/pkg/strategy/techsignal/strategy.go
@@ -4,13 +4,14 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"github.com/c9s/bbgo/pkg/exchange/binance"
-	"github.com/c9s/bbgo/pkg/fixedpoint"
-	"github.com/sirupsen/logrus"
 	"math"
 	"strings"
 	"time"
 
+	"github.com/c9s/bbgo/pkg/exchange/binance"
+	"github.com/c9s/bbgo/pkg/fixedpoint"
+	"github.com/sirupsen/logrus"
+
 	"github.com/c9s/bbgo/pkg/bbgo"
 	"github.com/c9s/bbgo/pkg/types"
 )
@@ -87,7 +88,7 @@ func (s *Strategy) Validate() error {
 }
 
 func (s *Strategy) listenToFundingRate(ctx context.Context, exchange *binance.Exchange) {
-	var previousIndex, fundingRate24HoursLowIndex *binance.PremiumIndex
+	var previousIndex, fundingRate24HoursLowIndex *types.PremiumIndex
 
 	fundingRateTicker := time.NewTicker(1 * time.Hour)
 	defer fundingRateTicker.Stop()
diff --git a/pkg/types/fundingrate.go b/pkg/types/fundingrate.go
new file mode 100644
index 000000000..3b99bc739
--- /dev/null
+++ b/pkg/types/fundingrate.go
@@ -0,0 +1,13 @@
+package types
+
+import (
+	"time"
+
+	"github.com/c9s/bbgo/pkg/fixedpoint"
+)
+
+type FundingRate struct {
+	FundingRate fixedpoint.Value
+	FundingTime time.Time
+	Time        time.Time
+}
diff --git a/pkg/types/premiumindex.go b/pkg/types/premiumindex.go
new file mode 100644
index 000000000..c9ffcd0aa
--- /dev/null
+++ b/pkg/types/premiumindex.go
@@ -0,0 +1,15 @@
+package types
+
+import (
+	"time"
+
+	"github.com/c9s/bbgo/pkg/fixedpoint"
+)
+
+type PremiumIndex struct {
+	Symbol          string           `json:"symbol"`
+	MarkPrice       fixedpoint.Value `json:"markPrice"`
+	LastFundingRate fixedpoint.Value `json:"lastFundingRate"`
+	NextFundingTime time.Time        `json:"nextFundingTime"`
+	Time            time.Time        `json:"time"`
+}