Had a sell stop sitting at 1139.25 and at the open, I get filled to find a full point lower!! Never have I had slippage this bad. Is this normal, or should I question IB?? THanks
Look at the trade data. It looks like at the open there was a gap down. If others had stops placed just above yours, these would have wiped out any remaining liquidity at favorable levels. It doesn't hurt enquiring with IB anyway.
On a day like yesterday that's easily possible, see here: http://ftalphaville.ft.com/blog/2010/09/28/355081/market-on-edge-after-apple-drops-like-a-stone/ When you look at the following tick chart, you will notice that the market dropped from 1139.75 to 1138.75 without a single trade in between. The red line is your stop, the horizontal blue line is the market opening (15.30 is due to european time).
Talk about stops. I use IB and I know they are simulated. Never placed near obvious resistence/support. Always seem to be the last trade before the market reverses. Bad luck or a fix?