Calling Scalia: Citadel Taps an SEC Antagonist For Fight Over Market Structure Rules

Also, SEC fends off another legal challenge to rule that eased constraints on proxy advisors

It’s understandable that Citadel Securities has a lot to say about the SEC’s market structure revamp. After all, Chair Gary Gensler has basically said that the effort is meant to diminish the dominance that Citadel and a handful of other big market makers have over retail stock trading. But even some allies were a bit amazed that the firm went to the tr…