I am currently testing a strategy on 50 Stocks from the Nasdaq 100 Index, with a default position size of 1,000. Exit is via a time-stop, i.e. I send a simple market order to close the whole Position at once.
STRANGELY, this is what happened today:
- I had an open long position in one stock of 1000 shares in an IB-Papertrading account, then the timestop was activated
- NT sent a market order for 1000 shares routed via IB-SMART
- NT then sent another market order for 100 shares via ISLAND
- Resulting net-short position of 100 shares
Any ideas as to why that happens and how I can prevent it, especially if I want to leave Papertrading and go for real?
Thanks and best regards!
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