S&P 500 Gains and Losses Today: Supermicro, Arista Networks, and Nvidia Lead Tech Selloff

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Michael Bromberg

Wed, Mar 26, 2025, 1:58 PM 3 min read

The S&P 500 fell 1.1% connected Wednesday, March 26, 2025, arsenic tech stocks faltered and the White House prepared to denote tariffs connected car imports.
Shares of Super Micro Computer, Arista Networks, Nvidia, and Tesla led tech losses.
Uniform supplier Cintas posted beardown net results, highlighting benefits from caller acquisitions, and its shares pushed higher.

Major U.S. equities indexes sputtered successful the midweek trading league pursuing reports that President Trump would denote levies connected vehicles imported to the U.S.

The S&P 500 dropped 1.1%, portion the Dow slipped 0.3%. Underperformance successful the tech assemblage dragged down the Nasdaq, which tumbled 2%.

Super Micro Computer (SMCI) shares led losses connected the S&P 500, plunging 8.9%. Wednesday's driblet extended losses earlier successful the week aft Goldman Sachs analysts downgraded Supermicro banal to "sell" from "neutral," noting that accrued contention successful the AI server marketplace could restrain gross margins.

Shares of unreality networking specializer Arista Networks (ANET) besides fell arsenic AI and spot stocks faltered, with shares down 6.1%. Nvidia (NVDA) banal slipped 5.7%, starring losses connected the Dow, amid concerns astir further constraints connected AI spot income successful China. Shares of Vistra (VST), a inferior that has drawn attraction for its accidental to powerfulness AI information centers, dropped 5.9%.

Moderna (MRNA) banal declined 7% aft reports that the U.S. would discontinue backing for Gavi, the Vaccine Alliance, a planetary concern aimed astatine improving the availability of immunizations successful processing countries. Shares of different vaccine manufacturers besides mislaid ground.

Following 5 consecutive affirmative trading sessions, Tesla (TSLA) shares fell 5.6% Wednesday, threatening the EV maker's rebound from a prolonged slump. The banal had gained much than 27% successful the week starring up to Wednesday's session, boosted by the imaginable for watered-down tariffs and respective endorsements.

Cintas (CTAS) shares logged the S&P 500's apical regular performance, surging 5.8% aft the supplier of uniforms and different products for the workplace reported better-than-expected income and profits. The institution highlighted caller acquisitions arsenic a operator of gross maturation but indicated that it volition measurement distant from its projected takeover of chap azygous and installation work supplier UniFirst (UNF), citing an inability to hold connected cardinal terms.

Payroll processor Paychex (PAYX) besides received a boost from its quarterly net report, with shares gaining 4.2% connected Wednesday. Although the uncertain economical situation weighed connected request for the company's quality superior absorption services, contributing to lower-than-expected quarterly income figures, stringent cost-control measures helped Paychex transcend nett forecasts.