IB and IEX Discretionary Pegs

Discretionary Peg™ Orders are not eligible for routing, and execute at IEX only.

Indeed, as per the rulebook "Is not eligible for routing pursuant to IEX Rule 11.230(b) and (c)(2)."

But I guess in a way that probably makes sense given what a D-PEG is meant to achieve, i.e. it would be difficult to route away and yet still maintain the protections against adverse selection etc.

You can't really exercise price discretion if you've routed it away into the hands of the HFTs where you have to bend over and take what you're given. :cool:

In further support of the above, as Brad Katsuyama said in his recent Bloomberg interview (https://www.bloomberg.com/features/2016-brad-katsuyama-interview/?cmpid==socialflow-twitter-business):

"D-peg is about preventing trades from happening" and "D-peg was our answer—to say, “Some people are guessing, with a very high degree of accuracy, that the quote’s about to move.” Do we necessarily want to take a buyer and throw them up to the midpoint if we think they’re going to get run over?"
 
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