Set a limit on the amount of money to be invested, such as 10,000 yuan. Set a value ratio of money to bitcoin, such as 50:50. Maintain the value ratio of money to bitcoin based on current prices.
For example, if the initial investment is 10,000 yuan, the ratio of the funds to the Bitcoin is set at 30:70 and the first transaction involves the purchase of 7,000 yuan of Bitcoin (assuming the price of the coin is 1,000 yuan and the purchase of 7 coins), the remaining funds are 3,000 yuan and the ratio is maintained at 30:70;
The next trading cycle, assuming the price of the coin changes to 1500 yuan, the total value changes to 1500 yuan.7 + 3000 = 13500, so you should keep the money in your hand at 13500.0.3 = 4050 yuan, then you should sell 4050 - 3000 = 1050 bitcoins, the number sold is 1050/1500 = 0.7, the remaining bitcoins in your hand are 7-0.7 = 6.3, the coin value is 6.3 * 1500 = 9450;; the ratio of funds to the value of bitcoin is 4050:9450 = 30:70;;
Similarly, when the price of the currency falls, it is bought in order to maintain the same proportion.
var initAccount = null;
var initPrice = 0;
var stockHold = 0;
var moneyHold = 0;
var lastOrderID = null;
var prices = [];
function AdjustFloat(v) {
return Math.floor(v * 1000) / 1000;
}
function GetAccount() {
var account = null;
while (!(account = exchange.GetAccount())) {
Log('Get Account Error');
Sleep(ErrorInterval);
}
return account;
}
function GetCurrentPrice() {
var ticker = null;
while (!(ticker = exchange.GetTicker())) {
Log('Get Ticker Error');
Sleep(ErrorInterval);
}
return AdjustFloat(ticker.Last);
}
function GetOrders() {
var orders = null;
while (!(orders = exchange.GetOrders())) {
Log('Get Orders Error');
Sleep(ErrorInterval);
}
return orders;
}
function CancelPendingOrders() {
while (true) {
var orders = GetOrders();
if (orders.length === 0) {
return;
}
for (var i = 0; i < orders.length; i++) {
exchange.CancelOrder(orders[i].Id);
if (i < (orders.length - 1)) {
Sleep(ErrorInterval);
}
}
}
}
function GetStatus() {
var price = GetCurrentPrice();
var initStockValue = InitStock + InitMoney / initPrice;
var initMoneyValue = InitMoney + InitStock * initPrice;
var stockValueNow = stockHold + moneyHold / price;
var moneyValueNow = stockHold * price + moneyHold;
var stockEarned = stockValueNow - initStockValue;
var moneyEarned = moneyValueNow - initMoneyValue;
var averagePrice = 0;
var alpha = (stockHold - InitStock) * (price - initPrice);
var beta = moneyEarned - alpha;
var sum = 0;
if (prices.length > 0) {
for (var i = prices.length - 1; i >= 0; i--) {
sum += prices[i];
}
averagePrice = sum / prices.length;
}
var logString = 'Stock Holding:' + AdjustFloat(stockHold) + '\n';
logString += 'Money Holding:' + AdjustFloat(moneyHold) + '\n';
logString += 'Stock Earned:' + AdjustFloat(stockEarned) + '\n';
logString += 'Money Earned:' + AdjustFloat(moneyEarned) + '\n';
logString += 'History Average price:' + averagePrice + '\n';
logString += 'Current Price:' + price + '\n';
logString += 'Alpha:' + alpha + '\n';
logString += 'Beta:' + beta;
LogProfit(moneyEarned);
return logString;
}
function CaculateHoldings() {
CancelPendingOrders();
if (lastOrderID) {
var order = exchange.GetOrder(lastOrderID);
Log('last order:', order);
if (order.Status === ORDER_STATE_CLOSED) {
if (order.Type === ORDER_TYPE_BUY) { //Buy
stockHold += order.DealAmount;
moneyHold -= order.DealAmount * order.Price;
Log("Order Buy. stockHold +=:", order.DealAmount, ',Money -=:', order.DealAmount * order.Price);
} else { //Sell
stockHold -= order.DealAmount;
moneyHold += order.DealAmount * order.Price;
Log("Order Sell. stockHold -=:", order.DealAmount, ',Money +=:', order.DealAmount * order.Price);
}
}
}
}
function OnTick() {
var currentPrice = GetCurrentPrice();
prices.push(currentPrice);
//Log('History prices:',prices);
var stockValue = 0;
var totalValue = 0;
var ratio = 0;
stockValue = stockHold * currentPrice;
totalValue = stockValue + moneyHold;
ratio = stockValue / totalValue;
Log('Current Price:', currentPrice);
Log('stockHold:', stockHold);
Log('moneyHold:', moneyHold);
Log('stockValue:', stockValue);
Log('Current Ratio:', ratio);
if (ratio > StockRatio) { //Sell
Log('Current ratio > StockRatio');
var sellAmt = (stockValue - totalValue * StockRatio) / (currentPrice - SlidePrice);
lastOrderID = exchange.Sell(currentPrice - SlidePrice, sellAmt);
} else { //Buy
Log('Current ratio < StockRatio');
var buyAmt = (totalValue * StockRatio - stockValue) / (currentPrice + SlidePrice);
lastOrderID = exchange.Buy(currentPrice + SlidePrice, buyAmt);
}
Log('Order ID:', lastOrderID);
CaculateHoldings();
}
function main() {
if (InitStock < 0) {
Log('Stock less than zero.');
return;
}
if (InitMoney < 0) {
Log('Money less than zero.');
}
//if(InvestInterval < 0){
// Log('InvestInterval less than zero.');
//}
if (ErrorInterval < 0) {
Log('ErrorInterval less than zero.');
}
if (StockRatio < 0 || StockRatio > 1) {
Log('StockRatio should be a number from 0 to 1.');
}
EnableLogLocal(true);
SetFailover(true);
exchange.IO("websocket");
Log(exchange.GetName(), exchange.GetCurrency());
initAccount = _G('InitAccount');
if (initAccount === null) {
initAccount = GetAccount();
_G('InitAccount', initAccount);
}
Log('InitAccount', initAccount);
initPrice = _G('InitPrice');
if (initPrice === null) {
initPrice = GetCurrentPrice();
_G('InitPrice', initPrice);
}
Log('InitPrice', initPrice);
if (UseAccount) {
InitMoney = initAccount.Balance + initAccount.FrozenBalance;
InitStock = initAccount.Stocks + initAccount.FrozenStocks;
}
Log('InitMoney:', InitMoney);
Log('InitStock:', InitStock);
stockHold = _G('StockHold');
if (stockHold === null) {
stockHold = InitStock;
Log('Set Stock Hold', stockHold);
}
moneyHold = _G('MoneyHold');
if (moneyHold === null) {
moneyHold = InitMoney;
Log('Set Money Hold', moneyHold);
}
if (_G('Prices') !== null) {
prices = _G('Prices');
}
while (true) {
OnTick();
LogStatus(GetStatus());
Sleep(InvestInterval * 1000 * 60);
}
}
function onexit() {
_G('StockHold', stockHold);
_G('MoneyHold', moneyHold);
//_G('Prices',prices);
Log('Set Stock Hold', stockHold);
Log('Set Money Hold', moneyHold);
Log('Set prices:', prices);
Log('Robot Stopped!#ff0000@');
}