For Markets, a Burst of Glee on Trade, Then the Facebook Flop

  • Stocks surge in last half hour on word of European trade pact
  • Facebook’s results put a damper on the party as stock tumbles
Facebook Plunges 20% at the Open, Wiping Out $120 Billion in Value
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As far as market tremors go, you could do worse than the minutes before and after the close of Wednesday’s U.S. session.

A middling advance became a full-blown rally in stocks, with the S&P 500 Index closing up 0.9 percent gain. An exchange-traded fund tracking emerging markets tacked on half a percent in 30 minutes. Canadian equities extended gains, Mexico’s erased a loss, and yields on 10-year Treasuries jumped.