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by kasey_junk 4672 days ago
I'll admit I haven't looked at every broker, but every exchange that I know of, you have to opt in for orders to not go to the other exchanges.

This frequently is a feature for both sides of the equation due to lower fees, better execution rules, rebates, priority, etc.

I certainly know that I would never opt in to a platform that consistently provided worse execution (especially in the equities space where there are so many choices).