冰山委托指的是投资者在进行大额交易时，为避免对市场造成过大冲击，将大单委托自动拆为多笔委托，根据当前的最新买一/卖一价格和客户设定的价格策略自动进行小单委托，在上一笔委托被全部成交或最新价格明显偏离当前委托价时，自动重新进行委托。 例子: 如果单次均值浮动点数设置为10那么: 每一笔委托的数量为其单次委托平均值的90%~110%，委托价格为最新买1价*（1-委托深度），在上一笔委托全部成交后再进行新的一笔委托，在最新成交价格距离该笔委托超过委托深度*2时自动撤单并重新进行委托。在策略总成交量等于其总委托数量时停止委托。当市场的最新成交价格高于其最高买入价格时停止委托，在最新成交价格重新低于最高买入价后恢复委托。
function CancelPendingOrders() {
while (true) {
var orders = _C(exchange.GetOrders);
if (orders.length == 0) {
return;
}
for (var j = 0; j < orders.length; j++) {
exchange.CancelOrder(orders[j].Id);
if (j < (orders.length-1)) {
Sleep(Interval);
}
}
}
}
var LastBuyPrice = 0;
var InitAccount = null;
function dispatch() {
var account = null;
var ticker = _C(exchange.GetTicker);
if (LastBuyPrice > 0) {
if (_C(exchange.GetOrders).length > 0) {
if (ticker.Last > LastBuyPrice && ((ticker.Last - LastBuyPrice) / LastBuyPrice) > (2*(EntrustDepth/100))) {
Log('deviate to much, newest last price:', ticker.Last, 'order buy price', LastBuyPrice);
CancelPendingOrders();
} else {
return true;
}
} else {
account = _C(exchange.GetAccount);
Log("order finised, total cost:", _N(InitAccount.Balance - account.Balance), "avg buy price:", _N((InitAccount.Balance - account.Balance) / (account.Stocks - InitAccount.Stocks)));
}
LastBuyPrice = 0;
}
var BuyPrice = _N(ticker.Buy * (1 - EntrustDepth/100),PricePerision);
if (BuyPrice > MaxBuyPrice) {
return true;
}
if (!account) {
account = _C(exchange.GetAccount);
}
if ((InitAccount.Balance - account.Balance) >= TotalBuyNet) {
return false;
}
var RandomAvgBuyOnce = (AvgBuyOnce * ((100 - FloatPoint) / 100)) + (((FloatPoint * 2) / 100) * AvgBuyOnce * Math.random());
var UsedMoney = Math.min(account.Balance, RandomAvgBuyOnce, TotalBuyNet - (InitAccount.Balance - account.Balance));
var BuyAmount = _N(UsedMoney / BuyPrice, 3);
if (BuyAmount < MinStock) {
return false;
}
LastBuyPrice = BuyPrice;
exchange.Buy(BuyPrice, BuyAmount, 'Cost: ', _N(UsedMoney), 'last price', ticker.Last);
return true;
}
function main() {
CancelPendingOrders();
InitAccount = _C(exchange.GetAccount);
Log(InitAccount);
if (InitAccount.Balance < TotalBuyNet) {
throw "balance not enough";
}
LoopInterval = Math.max(LoopInterval, 1);
while (dispatch()) {
Sleep(LoopInterval * 1000);
}
Log("All Done", _C(exchange.GetAccount));
}