Korea might extend temporary short-selling ban for another three months By Park Jae-hyuk Goldman Sachs appears to have suffered more from the temporary ban on short-selling on the Seoul bourse than two other top-tier global investment banks ― JPMorgan Chase and Morgan Stanley, according to industry officials, Wednesday. Short-selling refers to a method in which an investor sells borrowed shares in the belief that the price will fall and they will be able to buy the shares back at a discount, keeping the difference and returning the borrowed shares. Before the financial authorities temporarily prohibited the practice last March to counter the stock market plunge in the aftermath of the COVID-19 pandemic, Goldman Sachs was one of the foreign brokerage houses that had most frequently used short-selling on the KOSPI and Kosdaq markets, along with Morgan Stanley, Merrill Lynch and Credit Suisse, according to data from the Korea Exchange.