Reporting season throws up increased volatility on the stock level, illustrated perfectly by the +20% surge higher by Facebook parent Meta Platforms (META US) last week. However, when the market is positioned very bearishly towards a stock, and it beats or isn’t too bad, the move can be exaggerated on the upside as shorts look to buy back stock &/or fund managers attempt to get some exposure before it gets away from them. While shorting can get a lot of headlines, it is difficult to consistently get right and big losses from shorts are common place. When short a stock and it rallies, the problem gets bigger/worse, unlike a bought stock that goes down, the problem gets less influential on returns. Buying heavily shorted stocks can at times yield strong, quick gains.