1) Let's say, a lot of investors have taken short positions in a stock expecting its price to fall in the future due to some bad news
2) As time passes, the stock price seems to hold steady & doesn't show any signs of falling
(1/2) 👇
4) They now decide to close their short (sell) positions. To close their positions, they have to buy the stock to square-off
(2/3) 👇
6) Looking at the price go up, more buyers (fresh positions) join in taking the prices even higher
All this results in a massive up move known as a "short-covering" rally
(3/3)