Limit order traded through but not hit

[BPtrader]

Quote from SideShowBob:

I had a limit order with IB (SMART routing, not specifying anything about exchanges to use) which apparently was traded through on Thursday but did not execute. My order was sell @ 27.93 and the high of the day was 27.94 but my order did not execute. The price high was around 10 AM. How is that possible given the NBBO bullshit they supposedly have in place? Did IB screw me in some way? Not saying they did but I'm hoping someone could explain how another order at a higher price could go through without my order filling. We're talking < 1000 shares so my order was not a huge block order or something like that.

SSB

27.94 was traded in the dark pool, not on the exchange where your order sat.

You must get into the dark pool, and find out what the hell is going on in there.

 

[Sky123987]

Quote from BPtrader:

27.94 was traded in the dark pool, not on the exchange where your order sat.

You must get into the dark pool, and find out what the hell is going on in there.

dark pools are between the spread. This is not correct

 

[SideShowBob]

Wow this thing grew legs and a tail. Tried using market if touched order today, had about 1.5 cents per share slippage. Not wonderful but sure beats the slippage I had because the orders didn't execute Thursday morning.