4 ms·was that limited to ToS though? Wasn't much liquidity out thereby brxdy 11y agowas that limited to ToS though? Wasn't much liquidity out therevikas5678 11y agoInteractive Brokers and Tradestation didnt have much issues, but yes, getting filled on trades, especially options trades was a nightmare.tradinup 11y agoI was wondering about this, so Interactive Brokers was still pretty solid during last Mondays market swings?