# Stocks Fall After Inflation Data as Sanmina and Keysight Rise After Hours

- URL: https://stocks.freetheai.org/news/stocks-fall-after-inflation-data-as-sanmina-and-keysight-rise-after-hours-f1abbf
- Published: 2026-10-14T20:52:58Z
- Category: markets; sentiment: mixed; impact: medium
- Symbols: [NYSE:DELL](https://stocks.freetheai.org/symbols/NYSE-DELL), [NYSE:CIEN](https://stocks.freetheai.org/symbols/NYSE-CIEN), [NYSE:UNH](https://stocks.freetheai.org/symbols/NYSE-UNH), [NASDAQ:DLTR](https://stocks.freetheai.org/symbols/NASDAQ-DLTR), [NASDAQ:MRNA](https://stocks.freetheai.org/symbols/NASDAQ-MRNA), [NYSE:COMP](https://stocks.freetheai.org/symbols/NYSE-COMP)
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Major U.S. stock benchmark indices ended lower on Wednesday as investors processed the latest consumer inflation report. The S&P 500 fell 1.1%, the tech-heavy Nasdaq Composite dropped 1.8%, and the Dow Jones Industrial Average slipped 0.1%. Despite the broad market downturn during regular trading hours, several stocks experienced notable price movements after the market close.

In extended trading, Sanmina Corp. (SANM) rebounded over 7% following an 8.25% loss during the regular session, buoyed by investor enthusiasm for its artificial intelligence business segments. Keysight Technologies (KEYS) advanced more than 4% after ending regular trading down 3.4%, driven by the launch of new AI data center infrastructure products at the OCP Global Summit. Meanwhile, Assurant (AIZ) slid 2.9% after hours due to low-volume liquidity and profit-taking, paring back its 2% gain from earlier in the day.

During regular trading, top gainers included UnitedHealth Group Incorporated (UNH), Dollar Tree, Inc. (DLTR), and Moderna, Inc. (MRNA), which each rose more than 4.6%. On the downside, Dell Technologies, Inc. (DELL) dropped 11.27% and Ciena Corporation (CIEN) lost 10.19% as technology equities faced selling pressure.

## Key points

- Major U.S. stock indices closed lower on Wednesday following the latest consumer inflation report.
- Sanmina Corp. rose more than 7% in extended trading on optimism surrounding its AI business segments.
- Keysight Technologies gained over 4% after hours after launching AI data center infrastructure products.
- Assurant fell 2.9% after the close due to low trading volume and profit-taking despite having gained 2% earlier.
- Dell Technologies and Ciena Corporation were among the regular session's largest decliners, dropping over 10% each.

## Questions and answers

### Why did Sanmina stock rise in after-hours trading?

Sanmina stock rose over 7% after hours due to investor optimism surrounding its artificial intelligence business segments, reversing an 8.25% drop during regular trading hours.

### What caused Keysight Technologies stock to jump after the market closed?

Keysight Technologies gained more than 4% in extended trading after introducing new AI data center infrastructure products at the OCP Global Summit.

### How did major U.S. stock market indices perform on Wednesday?

Major stock indices finished lower following consumer inflation data, with the S&P 500 falling 1.1%, the Nasdaq Composite dropping 1.8%, and the Dow Jones Industrial Average slipping 0.1%.