BY  MICHELLE CHAPMAN

Nvidia shares rebounded Tuesday, halting a three-day skid that had surprised many investors and wiped away more than $400 billion in market value.

Early last week, Nvidia overtook Microsoft as Wall Street’s most valuable public company. Then it fell 13% over three days, its worst such stretch since 2022. Because Nvidia has become so massive in size, the movements for its stock carry extra weight on the S&P 500 and other indexes.

Any stock that climbs as much as Nvidia has — up more than 1,000% since the autumn of 2022 — is vulnerable to some of its investors selling shares in order to lock in some profits. That earlier run makes a 13% drop over three days look like a relative trifle.

Monday, Nvidia shares rose 6.8%, bringing its market value to $3.10 trillion, behind Microsoft at $3.35 trillion and Apple at $3.21 trillion.

Those three