South Korea's market watchdog has decided to impose fines on JPMorgan, Morgan Stanley, Nomura and UBS for violating short-selling rules in the domestic stock market, officials at the country's Financial Supervisory Service (FSS) said on Thursday.

South Korea's Financial Supervisory Service (FSS) announced that it would impose fines on four major financial institutions—JPMorgan, Morgan Stanley (NYSE: MS ), Nomura, and UBS—for violating short-selling rules in the country's stock market.