Share New Research 
# submit a limit order to buy 10 shares at .1% below the bar's close
close = self.Securities[self.spy.Value].Close
newTicket = self.LimitOrder(self.spy, 10, close * d.Decimal(.999))
self.__openLimitOrders.append(newTicket)
# submit another limit order to sell 10 shares at .1% above the bar's close
newTicket = self.LimitOrder(self.spy, 10, close * d.Decimal(1.001))
self.__openLimitOrders.append(newTicket)
In your example on github there should be a - before the quantity in the sell example. It is missing right now.
Jing Wu
Hi David, thanks for point it out. It has now been corrected.
Davidii111
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