Dan Mathisson of Credit Suisse Securities, which he describes as the largest U.S. broker-dealer by volume traded, the top broker in algorithmic trading, and the largest U.S. alternative trading system, says the proposal as now creates a dangerous situation because it only applies to trading between 9:45 a.m. and 3:45 p.m.
FORBES: Broker-Dealers See Holes In SEC Circuit Breakers