In One Chart: How Facebook’s $120 billion loss ranks among the biggest one-day stock disasters

At market close Wednesday, Facebook Inc. was worth $630 billion.

One day later: $510 billion.

That roughly $120 billion loss in market cap tops the list of biggest one-day routs in recent stock market history — and by a very wide, $30-billion margin.

Facebook stock FB, -18.96% ended down 19% on Thursday, its ugliest single-session decline since it became a publicly traded entity on May 18, 2012. According to WSJ Market Data, Facebook’s drop is the biggest one-day loss in history among the current top 25 companies by market cap and some other notables.

Some more perspective on just how huge a number $120 billion is (in case you need that): The drop is larger than the individual market caps of 464 of the 500 companies in the S&P 500, or 92.8% of them.

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