Trading strategies

Trade a portfolio of correlated instruments on the bet that temporary statistical relationships revert. The edge is the average behaviour of many small, diversified positions, not any single forecast.

Take a directional position around an event (release, earnings, breaking news) before the price fully reprices. The slow-drift edge is gone; the surviving edge is latency-to-react and correct interpretation.

Quote both sides, earn the spread on uninformed flow, manage inventory, and survive adverse selection. The single biggest live commercial family: structural, still alpha for the equipped.

Quote around a better fair value inferred from order flow, and manage adverse selection by reading toxicity. Where the modern market-making edge actually sits: microprice, OFI, VPIN.

Pick off a stale quote on a slow venue before it updates to match a fast one. As a structural feature it happens every day; as an open opportunity in mature equities it is a commoditised, winner-takes-all arms race.

The illegal shadow of real strategies: faking liquidity or news to move the price. Covered here for recognition and detection only, never as an operational how-to.

Not a fifth strategy family but a toolkit across all of them. Genuine lift on feature-rich, high-sample problems (microstructure signals, news NLP) and overpromised everywhere else.