New Delhi, March 26 -- A selloff in tech megacaps drove stocks lower, halting a three-day rebound, with concern about the economic impact of a trade war weighing on risk appetites as US copper surged and orders for business equipment slid.

Following their biggest winning run since November, the group of big techs known as "Magnificent Seven" got hit, with Nvidia Corp. and Tesla Inc. sinking over 3.5%. The Nasdaq 100 slipped 1%. Microsoft Corp. barely budged after TD Cowen analysts said the company had walked away from new data center projects in the US and Europe. A measure of big banks rose for a ninth straight day - the longest rally since 2006.

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