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Hello, i compared the trades listed on the TWS time & sales with all the trades listed on nasdaq.com for symbole ZM. https://www.nasdaq.com/market-activity/stocks/zm/latest-real-time-trades The TWS list shows only trades from a few exchanges. nasdaq.com shows much more trades, especially in...

Hi, i wonder if the marketmaking strategy by trying to win the spread with limit orders in Nasdaq and NYSE small cap stocks could break any rules? If you try to place your bid or ask order always on the top of book, could this be some kind of spoofing or price manipulation or something else...