U.S. cash and derivatives broker-dealer MF Global Holdings filed for bankruptcy on Monday, The Wall Street Journal reports. The company is a member of more than 70 exchanges across the globe, and is among the top five firms in execution or clearing on most of the largest platforms.

Clearinghouses and exchanges around the world have barred any further trading by MF. Meanwhile, U.K. regulators have begun introducing fresh banking safeguards in the aftermath of MF’s bankruptcy, which has made stand-alone operations of MF’s U.K. arm unfeasible.

Click here for the story from The Wall Street Journal.