CNBC Reports Midday Volatility in Workday, Generac, Vital Farms, Vicor and Tower Semiconductor Shares

CNBC reported on September 17, 2026, that shares of several companies were among the stocks making the biggest moves during midday trading, according to the outlet's markets coverage.

The report named Workday, Generac, Vital Farms, Vicor and Tower Semiconductor as companies whose stocks were highlighted for significant intraday activity, CNBC said.

The available excerpt from CNBC did not specify the direction or magnitude of the price movements, nor did it provide detailed reasons such as earnings reports, analyst upgrades or downgrades, or other corporate news that may have driven the trading activity for each individual stock.

Workday is a provider of enterprise cloud applications for finance and human resources. Generac manufactures power generation equipment. Vital Farms produces pasture-raised eggs and butter products. Vicor designs and manufactures power modules, while Tower Semiconductor operates as a specialty foundry for integrated circuits.

CNBC's midday stock movers segment typically tracks companies experiencing above-average trading volume or price swings during a single trading session, often tied to earnings releases, guidance updates, or broader market and sector trends.

Further details on the specific factors behind each company's stock movement were not included in the source material reviewed for this report.