Why Are Semiconductor Chip Stocks Falling On Thursday?

by | Mar 19, 2026 | General

Semiconductor stocks pulled back on Thursday amid geopolitical tensions and supply risks, adding fresh pressure to an already sensitive sector.

The PHLX Semiconductor Index traded lower by nearly 3%. The NASDAQ Composite Index traded lower by over 1%.

Middle East Tensions Raise Supply Concerns

Chip stocks traded lower as the ongoing Middle East conflict fueled worries about a potential helium supply crunch, a critical material used in chip manufacturing.

The risk of disruption adds another layer of uncertainty to an industry already navigating tight supply chains.

Micron Falls Despite Strong Results

Micron Technology Inc (NASDAQ:MU) declined on Thursday even after reporting strong results, as investors focused on its aggressive spending plans.

The company expects capital expenditures to exceed $25 billion in fiscal 2026 and rise further in 2027, while new capacity from upcoming facilities will not meaningfully come online until next year or later.

The reaction also reflects broader supply concerns, with Wedbush analyst Matt Bryson highlighting to Bloomberg TV that memory remains a supply-driven market and that new capacity will take time to materialize.

AI Demand Lifts Competition Across Ecosystem

Micron’s peers, including SanDisk Corp (NASDAQ:SNDK), Western Digital Corp (NASDAQ:WDC), and Seagate Technology Holdings Plc (NASDAQ:STX), also moved lower in sympathy.

These companies remain key players in the AI-driven storage and memory market, where demand continues to surge alongside AI infrastructure buildouts.

At the same time, major chip names such as Nvidia Corp (NASDAQ:NVDA), Advanced Micro Devices Inc (NASDAQ:AMD), Broadcom Inc (NASDAQ:AVGO), Intel Corp (NASDAQ:INTC), Marvell Technology Inc (NASDAQ:MRVL), and Taiwan Semiconductor Manufacturing Company Ltd (NYSE:TSM) traded lower, underscoring how closely linked the broader semiconductor ecosystem has become.

Price Action: Nvidia shares were down 1.76% at $177.22, Broadcom shares were down 1.07% at $312.55, Intel shares were down 0.06% at $45.00, Advanced Micro Devices shares were down 1.98% at $195.52, Micron Technology shares were down 5.54% at $436.16 and Taiwan Semiconductor shares were down 2.55% at $330.91 at the time of publication on Thursday, according to Benzinga Pro data.

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