Research on the design of hedging strategies for single-period loans

Research on the design of hedging strategies for single-period loans

In the past, futures hedges have generally been designed to detect the spread, and when the spread is met, take a single hedge. Is it possible to design a hanging hedge?

How to hedge

In different markets of the same or the same kind of goods, the opportunity to hedge arises when the difference between the bid and offer of the two markets is large. Generally, we eat the bid and offer that satisfies the difference and hold a hedged position. So the purpose of hedging is twofold, first to hedge the order holding, and second to ensure as much as possible that the difference of a buy and sell meets our expectations.

Then we design the trading idea to hang the buy order in the market order A and the sell order in the market order B. Then we detect our account order, and the transaction is processed. For example, if we detect a change in the order, we immediately balance the hedging position, replenish the position in the current holdings or even the position operation.

Hedging logic

Code design

The annotation is written directly in the code, the example is for reference design only and was only tested on OKEX V5 analog drives. This example is not a complete policy, please use it for reference only.

// 临时参数
var fuContractType = "quarter"    // 期货合约
var fuSymbol = "ETH_USDT"         // 期货交易对
var spSymbol = "ETH_USDT"         // 现货交易对
var minAmount = 0.1               // 每次交易量、最小交易量，币数
var step = 40                     // 差价步长
var buff = 5                      // 缓冲差价
var balanceType = "open"          // 对于单腿成交平衡时， open 补仓 close 平仓

var depthManager = function(fuEx, spEx, fuCt, fuSymbol, spSymbol) {
    var self = {}
    self.fuExDepth = null
    self.spExDepth = null 
    self.plusPrice = null
    self.minusPrice = null 

    self.update = function() {        
        spEx.SetCurrency(spSymbol)
        if (!IsVirtual()) {
            fuEx.SetCurrency(fuSymbol)
        }        
        fuEx.SetContractType(fuCt)

        var fuRoutine = fuEx.Go("GetDepth")
        var spRoutine = spEx.Go("GetDepth")
        var fuDepth = fuRoutine.wait()
        var spDepth = spRoutine.wait()
        if (!fuDepth || !spDepth) {
            return false 
        }
        self.fuExDepth = fuDepth
        self.spExDepth = spDepth

        if (fuDepth.Bids.length == 0 || fuDepth.Asks.length == 0 || spDepth.Bids.length == 0 || spDepth.Asks.length == 0) {
            return false 
        }
        self.plusPrice = fuDepth.Bids[0].Price - spDepth.Asks[0].Price   // futures Bid - spot Ask
        self.minusPrice = fuDepth.Asks[0].Price - spDepth.Bids[0].Price  // futures Ask - spot Bid
        return true 
    }

    self.getData = function() {       
        return {
            "fuExDepth" : self.fuExDepth,
            "spExDepth" : self.spExDepth,
            "plusPrice" : self.plusPrice,
            "minusPrice" : self.minusPrice
        }
    }
    return self 
}

var positionManager = function(fuEx, spEx, fuCt, fuSymbol, spSymbol, step, buffDiff, balanceType, initSpAcc) {
    var self = {}
    self.balanceType = balanceType
    self.depth = null 
    self.level = 1
    self.lastUpdateTs = 0
    self.fuPos = []
    self.spPos = []
    self.initSpAcc = initSpAcc
    self.spAcc = null
    self.hedgePos = null
    self.hedgePosPrice = 0
    self.minAmount = 0.01
    self.offset = ["", 0]

    self.update = function() {
        spEx.SetCurrency(spSymbol)
        if (!IsVirtual()) {
            fuEx.SetCurrency(fuSymbol)
        }        
        fuEx.SetContractType(fuCt)

        self.offset = ["", 0]
        var fuRoutine = fuEx.Go("GetPosition")
        var spRoutine = spEx.Go("GetAccount")
        var fuPos = fuRoutine.wait()
        var spAcc = spRoutine.wait()
        if (!fuPos || !spAcc) {
            return false 
        }
        self.fuPos = fuPos
        self.spAcc = spAcc
        if (!self.initSpAcc) {
            return false 
        }
        self.spPos = (spAcc.Stocks + spAcc.FrozenStocks) - (self.initSpAcc.Stocks + self.initSpAcc.FrozenStocks)   // 当前减去最初，正数为做多
        // 检测fuPos
        if (fuPos.length > 1) {
            return false 
        }
        fuPosAmount = fuPos.length == 0 ? 0 : (fuPos[0].Type == PD_LONG ? fuPos[0].Amount : -fuPos[0].Amount)
        if ((fuPosAmount > 0 && self.spPos > 0) || (fuPosAmount < 0 && self.spPos < 0)) {
            return false 
        }

        fuPosAmount = self.piece2Coin(fuPosAmount)

        self.hedgePos = (fuPosAmount == 0 || self.spPos == 0) ? 0 : (fuPosAmount < 0 && self.spPos > 0 ? Math.min(Math.abs(fuPosAmount), Math.abs(self.spPos)) : -Math.min(Math.abs(fuPosAmount), Math.abs(self.spPos)))
        var diffBalance = (spAcc.Balance + spAcc.FrozenBalance) - (self.initSpAcc.Balance + self.initSpAcc.FrozenBalance)
        if (self.hedgePos == 0) {
            self.hedgePosPrice = 0    
        } else {
            self.hedgePosPrice = fuPos[0].Price - (Math.abs(diffBalance) / Math.abs(self.spPos))
        }
        self.offset[1] = fuPosAmount + self.spPos  // 正数多头持仓溢出，负数空头持仓溢出
        if (fuPosAmount > 0 && self.spPos < 0) {   // 反套
            self.offset[0] = "minus"
        } else if (fuPosAmount < 0 && self.spPos > 0) {
            self.offset[0] = "plus"
        } else if (fuPosAmount == 0 && self.spPos < 0) {
            self.offset[0] = "minus"
        } else if (fuPosAmount > 0 && self.spPos == 0) {
            self.offset[0] = "minus"
        } else if (fuPosAmount == 0 && self.spPos > 0) {
            self.offset[0] = "plus"
        } else if (fuPosAmount < 0 && self.spPos == 0) {
            self.offset[0] = "plus"
        }
        return true 
    }

    self.getData = function() {
        return {
            "fuPos" : self.fuPos,
            "spPos" : self.spPos,
            "initSpAcc" : self.initSpAcc,
            "spAcc" : self.spAcc,
            "hedgePos" : self.hedgePos,
            "hedgePosPrice" : self.hedgePosPrice,
        }
    }

    self.keepBalance = function(depth) {
        var fuDepth = depth.fuExDepth
        var spDepth = depth.spExDepth
        if (self.offset[0] == "plus") {
            if (self.offset[1] >= self.minAmount) {
                if (self.balanceType == "close") {
                    // 现货多头持仓多了，平现货多仓
                    spEx.Sell(-1, self.offset[1])
                } else if (self.balanceType == "open") {
                    // 现货多头持仓多了，开期货空头持仓
                    fuEx.SetDirection("sell")
                    fuEx.Sell(-1, self.coin2Piece(Math.abs(self.offset[1])))
                }
            } else if (self.offset[1] <= -self.minAmount) {
                if (self.balanceType == "close") {
                    // 期货空头持仓多了，平期货空仓
                    fuEx.SetDirection("closesell")
                    fuEx.Buy(-1, self.coin2Piece(Math.abs(self.offset[1])))
                } else if (self.balanceType == "open") {
                    // 期货空头持仓多了，开现货多头持仓
                    spEx.Buy(-1, spDepth.Asks[0].Price * Math.abs(self.offset[1]))
                }
            }
            return false 
        } else if (self.offset[0] == "minus") {
            if (self.offset[1] >= self.minAmount) {
                if (self.balanceType == "close") {
                    // 期货多头持仓多了，平期货多仓
                    fuEx.SetDirection("closebuy")
                    fuEx.Sell(-1, self.coin2Piece(self.offset[1]))
                } else if (self.balanceType == "open") {
                    // 期货多头持仓多了，开现货空头持仓
                    spEx.Sell(-1, self.offset[1])
                }
            } else if (self.offset[1] <= -self.minAmount) {
                if (self.balanceType == "close") {
                    // 现货空头持仓多了，平现货空仓
                    spEx.Buy(-1, spDepth.Asks[0].Price * Math.abs(self.offset[1]))
                } else if (self.balanceType == "open") {
                    // 现货空头持仓多了，开期货多头持仓
                    fuEx.SetDirection("buy")
                    fuEx.Buy(-1, self.coin2Piece(Math.abs(self.offset[1])))
                }
            }
            return false 
        }
        return true 
    }

    self.process = function(depthManager) {
        var ts = new Date().getTime()
        var depth = depthManager.getData()
        var orders = self.getOrders()
        if (!orders) {
            return 
        }
        self.depth = depth
        var fuOrders = orders[0]
        var spOrders = orders[1]
        
        if (fuOrders.length == 0 && spOrders.length == 0) {
            // 重置level
            if (self.hedgePos == 0) {
                self.level = 1
            } else {
                self.level = Math.max(1, _N(self.hedgePos / self.minAmount, 0))
            }

            // 限制最大持仓量
            if (Math.abs(self.hedgePos) > 1) {
                return 
            }

            // 挂单
            var fuDepth = depth.fuExDepth
            var spDepth = depth.spExDepth
            self.update()

            if (self.hedgePos >= 0 && fuDepth.Bids[0].Price - spDepth.Asks[0].Price > 0) {        // 正套
                var distance = (step * self.level - (fuDepth.Asks[0].Price - spDepth.Bids[0].Price)) / 2          
                fuEx.SetDirection("sell")
                fuEx.Sell(fuDepth.Asks[0].Price + distance, self.coin2Piece(self.minAmount), fuDepth.Asks[0].Price, "挂单差价：", fuDepth.Asks[0].Price + distance - (spDepth.Bids[0].Price - distance))
                spEx.Buy(spDepth.Bids[0].Price - distance, self.minAmount, spDepth.Bids[0].Price)
            } else if (self.hedgePos <= 0 && spDepth.Bids[0].Price - fuDepth.Asks[0].Price > 0) { // 反套
                var distance = (step * self.level - (spDepth.Asks[0].Price - fuDepth.Bids[0].Price)) / 2          
                fuEx.SetDirection("buy")
                fuEx.Buy(fuDepth.Bids[0].Price - distance, self.coin2Piece(self.minAmount), fuDepth.Bids[0].Price, "挂单差价：", spDepth.Asks[0].Price + distance - (fuDepth.Bids[0].Price - distance))
                spEx.Sell(spDepth.Asks[0].Price + distance, self.minAmount, spDepth.Asks[0].Price)
            }
        } else if (fuOrders.length == 1 && spOrders.length == 1) {
            var fuDepth = depth.fuExDepth
            var spDepth = depth.spExDepth            
            // 判断位置
            var isCancelAll = false 
            if (self.hedgePos >= 0 && fuDepth.Bids[0].Price - spDepth.Asks[0].Price > 0) {        // 正套
                var distance = (step * self.level - (fuDepth.Asks[0].Price - spDepth.Bids[0].Price)) / 2
                if (Math.abs(fuOrders[0].Price - (fuDepth.Asks[0].Price + distance)) > buffDiff || Math.abs(spOrders[0].Price - (spDepth.Bids[0].Price - distance)) > buffDiff) {
                    isCancelAll = true 
                }
            } else if (self.hedgePos <= 0 && spDepth.Bids[0].Price - fuDepth.Asks[0].Price > 0) { // 反套
                var distance = (step * self.level - (spDepth.Asks[0].Price - fuDepth.Bids[0].Price)) / 2
                if (Math.abs(spOrders[0].Price - (spDepth.Asks[0].Price + distance)) > buffDiff || Math.abs(fuOrders[0].Price - (fuDepth.Bids[0].Price - distance)) > buffDiff) {
                    isCancelAll = true 
                }
            } else {
                isCancelAll = true 
            }
            if (isCancelAll) {
                self.cancelAll(fuEx, fuOrders)
                self.cancelAll(spEx, spOrders)
                self.lastUpdateTs = 0
            }
        } else {            
            self.cancelAll(fuEx, fuOrders)
            self.cancelAll(spEx, spOrders)       
            self.lastUpdateTs = 0
        }

        if (ts - self.lastUpdateTs > 1000 * 60 * 2) {
            self.update()
            self.keepBalance(depth)
            self.update()
            self.lastUpdateTs = ts 
        }
        LogStatus(_D())   // 状态栏可以设计输出需要观察的数据、信息
    }

    self.getOrders = function() {
        spEx.SetCurrency(spSymbol)
        if (!IsVirtual()) {
            fuEx.SetCurrency(fuSymbol)
        }        
        fuEx.SetContractType(fuCt)

        var fuRoutine = fuEx.Go("GetOrders")
        var spRoutine = spEx.Go("GetOrders")
        var fuOrders = fuRoutine.wait()
        var spOrders = spRoutine.wait()
        if (!fuOrders || !spOrders) {
            return false 
        }
        return [fuOrders, spOrders]
    }
    
    // 币转合约张数
    self.coin2Piece = function(amount) {
        if (IsVirtual()) {
            if (fuEx.GetName() == "Futures_Binance") {
                return amount
            } else if (fuEx.GetName() == "Futures_OKCoin") {
                var price = (self.depth.fuExDepth.Bids[0].Price + self.depth.fuExDepth.Asks[0].Price) / 2
                return _N(amount / (100 / price), 0)
            } else {
                throw "not support"
            }            
        }
        if (fuEx.GetName() == "Futures_OKCoin") {
            if (fuEx.GetQuoteCurrency() == "USDT") {
                return _N(amount * 10, 0)
            } else if (fuEx.GetQuoteCurrency() == "USD") {
                var price = (self.depth.fuExDepth.Bids[0].Price + self.depth.fuExDepth.Asks[0].Price) / 2
                return _N(amount / (100 / price), 0)
            } else {
                throw "not support"
            }
        } else {
            throw "not support"
        }
    }
    
    // 合约张数转币
    self.piece2Coin = function(amount) {
        if (IsVirtual()) {
            if (fuEx.GetName() == "Futures_Binance") {
                return amount
            } else if (fuEx.GetName() == "Futures_OKCoin") {
                var price = (self.depth.fuExDepth.Bids[0].Price + self.depth.fuExDepth.Asks[0].Price) / 2
                return amount * 100 / price
            } else {
                throw "not support"
            }            
        }
        if (fuEx.GetName() == "Futures_OKCoin") {
            if (fuEx.GetQuoteCurrency() == "USDT") {
                return amount * 0.1
            } else if (fuEx.GetQuoteCurrency() == "USD") {
                var price = (self.depth.fuExDepth.Bids[0].Price + self.depth.fuExDepth.Asks[0].Price) / 2
                return amount * 100 / price
            } else {
                throw "not support"
            }
        } else {
            throw "not support"
        }
    }

    self.cancelAll = function(e, orders) {
        var isFirst = true 
        while (true) {
            Sleep(500)
            if (orders && isFirst) {
                isFirst = false 
            } else {
                orders = e.GetOrders()
            }
            if (!orders) {
                continue
            } else {
                for (var i = 0 ; i < orders.length ; i++) {
                    e.CancelOrder(orders[i].Id, orders[i])
                }
            }
            if (orders.length == 0) {
                break
            }
        }
    }

    self.CoverAll = function() {
        // 全部平仓
        // 这里可以实现一个，一键平仓的功能
    }

    self.setMinAmount = function(minAmount) {
        self.minAmount = minAmount
    }

    self.init = function() {
        while(!self.spAcc) {
            self.update()
            Sleep(1000)
        }
        if (!self.initSpAcc) {  
            var positionManager_initSpAcc = _G("positionManager_initSpAcc")
            if (!positionManager_initSpAcc) {
                self.initSpAcc = self.spAcc
                _G("positionManager_initSpAcc", self.initSpAcc)
            } else {
                self.initSpAcc = positionManager_initSpAcc
            }
        } else {
            _G("positionManager_initSpAcc", self.initSpAcc)
        }
        // 打印初始信息
        Log("self.initSpAcc:", self.initSpAcc.Balance, self.initSpAcc.FrozenBalance, self.initSpAcc.Stocks, self.initSpAcc.FrozenStocks)
    }
    self.init()
    return self
}

function main() {
    _G(null)       // 清空持久化数据
    LogReset(1)    // 重置日志

    // 以下代码可以切换OKEX模拟盘
    // exchanges[0].IO("simulate", true)
    // exchanges[1].IO("simulate", true)

    var dm = depthManager(exchanges[0], exchanges[1], fuContractType, fuSymbol, spSymbol)
    var pm = positionManager(exchanges[0], exchanges[1], fuContractType, fuSymbol, spSymbol, step, buff, balanceType)
    pm.setMinAmount(minAmount)

    while (true) {
        if (!dm.update()) {
            Sleep(3000)
            continue
        }

        var cmd = GetCommand()
        if (cmd) {
            // 处理交互
            Log("交互命令：", cmd)
            var arr = cmd.split(":") 
            if (arr[0] == "") {
                pm.CoverAll()
            }            
        }

        pm.process(dm)
        Sleep(5000)
    }
}

Re-analyzed

You can see the hanging orders and withdrawals are very frequent. From the gains of the retrospective system statistics, the futures exchange account lost - 0.01666 ETH, the spot exchange gained 842.23758 USDT.-0.01666 * 4252 = -70.83832000000001ʽIn addition, cash profits are generally profitable‛.

However, this is only a review, and there are definitely more details to be solved in the real world.