With fast moving stocks even with good execution without at least 0.25 cent offset they can be hard to catch sometimes. 0.05 cents might not be enough but if you attempted it 5 times than that is more likely an execution issue.I just wanted to add that I decided to try out Interactive Brokers LITE and switched back to Pro almost immediately.
Honestly, I just tried it in the Simulator so I can't say for sure if my experience with it would carry over to live but if it does and your an active traders, avoid lite like the plague.
First of all in the pre-market I tried to buy into EKSO because it took off running like crazy. I placed my limit order in for 1000 shares at $4.15 and got no fill. Tried to again. No Fill. Tried 5 times, no fill. Using Pro I always got at least a partial fill and usually a full fill with the type of volume that was coming it. EKSO managed to get to around $5.75 per share in like 10 minutes so the "COST" of using Lite, since I couldn't get a fill due to the "simulated" poorer execution, was like $1600. My cost if I had been using pro would have been around $10 to make that $1600. Ouch.
Later after the market opened, I tried to get into EKSO again with a Stop Limit order set to buy at ASK with an offset of .05 cents and again I got no fill. That probably cost me another $500 give or take based on when I think I would have exited.
So if this had been live trading, I would have gave up around $2000 to save myself roughly $20 in commissions.
I called IB to discuss how big a different the execution was in the simulator comparing LITE to PRO and the person I spoke to said that they insured that the execution in the simulator was as close to realistic as possible. They also said, that yes, what I experienced was common when using LITE vs PRO due to the difference in direct routing vs sending everything to the MM. Of course what they say and what is real can be two different things.
To Conclude, again, I will say this was simulated so I can't be sure this massive difference in execution speed would carry over to live and it is possible IB set the simulator to purposefully give extraordinarily bad execution to encourage people to use Pro, but if what I experienced using Lite in the simulator is even close to realistic, there is no circumstances where I would use Lite as an active momentum trader.
In your case, I would just stick with pro. (That goes for me as well.)
Are you still using TWS for trading in your pro account or did you find something better yet?
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