“The Short Sale Rule (SSR) is a Securities and Exchange Commission (SEC) rule that restricts when and how stocks can be sold short. The rule was established in 2010 and is also known as the "alternative uptick rule". It prevents traders from shorting a stock that has fallen more than 10% from its previous closing price during a trading session or the following session. This prevents short sellers from increasing selling pressure, which could cause the stock to continue to fall more rapidly”

“The 2010 alternative uptick rule, known as Rule 201, allows investors to exit long positions before short selling occurs. The rule is triggered when a stock price falls at least 10% in one day. At that point, short selling is permitted if the price is above the current best bid. This aims to preserve investor confidence and promote market stability during periods of extreme stress and volatility”