Buyback Blackout Leaves U.S. Stocks on Own Prior to Earnings

Blackout in Lower Manhattan and Wall Street as seen from Brooklyn.

Photographer: Reggie Lavoie/Getty Images
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U.S. stocks are entering part of the year when one of their biggest support systems is turned off.

Buybacks, which reached a monthly record in February and have surged so much they make up about 2 percent of daily volume, are customarily suspended during the five weeks before companies report quarterly results, according to Goldman Sachs Group Inc. With the busiest part of first-quarter earnings seasons beginning in April, the blackout is getting started now.