Would like to get some thoughts from the forum about closing positions using limit or market orders. Yesterday I tried to close 10 contracts on a losing position using a limit order. I thought ten contracts were the standard size and that I would encounter no problem; but as it turns out, nine contracts closed at my limit price, and one was left. Is this a common occurrence when using limit orders to close a position? My broker told me the stock must have moved and I would need to close the remaining contract separately. I did this, but at this time the stock had fallen even further in price and the broker's commission was far larger than the profit to me, so it seemed pretty pointless. Any advice on the best way to avoid this situation in the future?