Workday, Generac, Vital Farms, and Vicor trade on notable midday moves

NEW YORK — Equities across technology, industrial equipment, specialty food, and semiconductor manufacturing registered notable mid-session price swings on Sept. 17, 2026, according to CNBC Finance.

The midday tape captured sharp valuation adjustments for corporate software provider Workday, backup power systems maker Generac, pasture-raised egg and dairy producer Vital Farms, power module manufacturer Vicor, and contract chipmaker Tower Semiconductor. Operators and allocators monitoring the session focused on sector-specific volatility as equity desks processed the midday momentum.

Strategic Context

The midday session brought distinct trading ranges for each targeted equity as market participants reassessed individual corporate valuations. Workday experienced active trading volume as institutional desks adjusted positions in enterprise software names. At the same time, Generac shares drew attention from industrial sector allocators tracking commercial demand for backup generation equipment.

In the consumer goods segment, Vital Farms moved amid broader volume in agricultural and specialty food equities. Specialty manufacturers Vicor and Tower Semiconductor also registered notable price changes, reflecting ongoing capital allocation shifts across semiconductor component suppliers and specialized analog chip foundries.

Forward Outlook

Allocators and corporate operators reviewing the Sept. 17 tape will monitor whether these midday price actions establish a sustained multi-day trend or simply reflect intraday rebalancing by institutional desks. Market participants tracking these specific equities should watch upcoming filing disclosures and sector earnings calendars for fundamental validation of the session's moves.

Source: CNBC Finance, Stocks making the biggest moves midday: Workday, Generac, Vital Farms, Vicor, Tower Semi & more.