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U.S. Markets Ended Friday Mixed As IonQ Led, Arista Networks Lagged

Sep 12, 2025 16:10:00 -0400 | #Markets

U.S. stock indexes closed mixed Friday as the rose 0.44%. Meanwhile, the 0.05%, and the declined 0.59%.

The of small-cap stocks dropped 0.80%, while the Cboe Volatility Index was up 0.14%.

Among companies with at least $10 billion in market value, IonQ Inc. (IONQ), was the biggest leader during the session, surging 18.11%, and Warner Bros. Discovery Inc. Series A (WBD) jumped 16.70%. Rocket Lab Corp. (RKLB) rounded out the top three leaders on Friday, with shares surging 10.18%.

Arista Networks Inc. (ANET) posted the largest decline, falling 8.91%, followed by Carlisle Cos. (CSL) shares, which declined 6.82%. Shares of Circle Internet Group Inc. (CRCL) declined 6.29%.

In commodities news, Brent crude oil futures were down 0.28%, while gold futures were up 0.25%. was down 0.18% to $116,573.

The 10-Year Treasury yield rose to 4.070%.

Stock indexes in Asia were mixed, with Japan’s NIKKEI 225 Index up 0.89% and China’s Shanghai Composite Index down 0.12%.

In Europe, indexes fell, with the STOXX Europe 600 Index declining 0.09% and the FTSE 100 Index declining 0.15% from the previous close.

U.S. stock markets close for trading at 4 p.m. ET. For regular updates on the trading day, visit Barron’s.

Editor’s Note: This story was auto-generated by Automated Insights, an automation technology provider, using data from Dow Jones and FactSet. See our market data terms of use.