Recursive Price-acceleration mechanism triggered when heavy retail buying of out-of-the-money call options forces market makers to algorithmically purchase the underlying stock to hedge accelerating gamma (delta-of-delta) exposure. Market makers selling calls must buy shares to stay delta-neutral as the price rises; the buying drives further price appreciation, forcing further hedging. The January 2021 GME gamma squeeze drove the intraday price from ~$17 to $483 in under three weeks. Distinct from a classical short squeeze but operationally layered — the options gamma squeeze compounds the underlying short-cover pressure.