NEW YORK -- It took less than a week for FTX to go from the third-largest cryptocurrency exchange in the world to bankruptcy court. The embattled cryptocurrency exchange, short billions of dollars, sought bankruptcy protection after the exchange experienced the crypto equivalent of a bank run. FTX, the hedge fund Alameda Research, and dozens of other affiliated companies filed a bankruptcy petition in Delaware on Friday morning. FTX US, which originally was not expected to be included in any financial rescue, was also part of the company's bankruptcy filing. CEO and founder Sam Bankman-Fried has resigned, the company said.