Bankers Face Weekend Work on Saturday’s Test of NYSE Shutdown

  • Dealers tweak algorithms ahead of planned trading floor close
  • Exchange to enable testing by banks on Saturday morning

Traders work on the floor of the New York Stock Exchange (NYSE) on March 20.

Photographer: Spencer Platt/Getty Images

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It’s time for Wall Street’s coders to shine.

The biggest U.S. banks will spend the weekend making changes to trading algorithms. They are preparing for the New York Stock Exchange to close its trading floor on Monday and move to fully electronic trading as the coronavirus spreads.