with IB options, make sure the option is on autoex (there is a color telling you if the autoexecution for the exchange is on/off). if the autoex is off for a particular exchange, your order goes into the crowd and you are at the mercy of the market makers. Thus for options you are better off using best execution as IB says they try not to route an order to an exchange where the autoex system is off. If you trade QQQ - don't use AMEX, route to ISLAND where fills are instant.
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