Tumble in U.S. Stock Futures Sets Off Limit Down Trade Curb

  • Contract prices hit a ‘hard downside limit’ when they fall 5%
  • Stocks plunging worldwide on results of British Brexit vote

Brexit: Winners and Losers

Waves of selling in stock futures sent S&P 500 indexes on the Chicago Mercantile Exchange into a limit-down trading curb.

The rules are triggered when S&P 500 contracts decline 5 percent from a reference price that is calculated in the last 30 seconds of trading on the previous day. E-mini futures plunged 5.07 percent to 1,999 and can’t go any lower in the overnight session.

Stocks fell around the world Friday as U.K. voters looked likely to approve a referendum to secede from the European Union, a move that investors have warned will put a break on the already-fragile global economy. The S&P 500 had risen in three of the last four days and closed Thursday less than 1 percent away from its all-time high.

How Britain Voted: Brexit Results


Full coverage of the referendum

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