Original sentence: According to Harvard Political Review writer Austin Tymins, Hedge fund firm Citadel LLC made billions of dollars front-running the trades of large institutional investors, many of which are investing on behalf of middle-class clients.One common practice of traders is a form of front running, where they peer into various exchanges and try to detect orders as they propagate from a broker's order router.Some traders place many small orders that indicate buying/selling pressure
Edited sentence: According to Harvard Political Review writer Austin Tymins, HFT firm Citadel LLC made billions of dollars front-running the trades of large institutional investors, many of which are investing on behalf of middle-class clients.HFT traders place many small orders that indicate buying/selling pressure.One common practice of high-frequency traders (HFT) is a form of front running, where they peer into various exchanges and try to detect orders as they propagate from a broker's order router