IB has an unusual behavior with odd-lot OCA orders on NYSE stocks. For example, say we have a 40 share short position in XYZ, with a OCA order consisting of a BUY 40 XYZ @ 55.00 STOP GTC and a BUY 40 XYZ @ 52.00 LIMIT GTC. These two orders bracketed yesterday's closing price of 54.00. Today XYZ trades above 55.00 and activates the STOP order. However, the IB TWS will return an error message stating to the effect that opening odd-lot orders are not allowed. The STOP order will be subsequently cancelled, leaving only the LIMIT order active. In this example, we have an outstanding open short position in XYZ at the time, thus this behavior is not correct, in my opinion. If odd-lot OCA orders worked for closing existing NYSE positions, it would make IB's TWS much more usable in my opinion for those of us trying to scale out on odd lot sizes. In my past discussions with IB tech support, they have acknowledged this as a known behavior. If you concur that this behavior should be changed, please let IB Management know. Their e-mail address is firstname.lastname@example.org. -- ITZ.