TSMC slides 4.4% on Middle East conflict supply chain fears
Semiconductor giant faces concerns over helium and bromine sourcing as US-Israel-Iran tension escalates
Taiwan Semiconductor Manufacturing Co Ltd (TSMC) shares fell 4.4% to $339.12 on Thursday, wiping approximately $80bn from the chipmaker's market capitalization, as escalating conflict in the Middle East intensified fears of supply chain disruptions for critical chipmaking materials. The decline marked one of the company's worst single-day drops in 2026 and dragged down the broader semiconductor sector as investors reassessed geopolitical risks.
The stock's slide comes amid heightened military tensions involving the US, Israel, and Iran, which have raised concerns about the security of key shipping routes through the Strait of Hormuz and the stability of material exports from the region. Qatar produces more than one-third of the world's helium supply, while Israel and Jordan account for approximately two-thirds of global bromine production—both materials essential to advanced semiconductor manufacturing.
Analysts at TrendForce warned that prolonged conflict could create significant bottlenecks for memory chip manufacturers, with bromine supply disruptions already affecting major producers including Samsung. The research firm noted that high-purity hydrogen bromide is specifically required for polysilicon etching in DRAM and NAND flash memory production, processes that cannot be easily substituted.
Helium serves critical functions in semiconductor fabrication, including wafer cooling during production due to its superior thermal conductivity, as well as in lithography and quality control leak testing. The Institute for Energy Research notes that no viable substitutes currently exist for helium in these essential manufacturing processes, making the industry particularly vulnerable to supply constraints.
"A sustained period of rising production costs coupled with potentially weakening demand could compel chip manufacturers to lower their financial guidance," analysts at TechBuzz.ai cautioned, highlighting the compounding pressure from rising energy costs in energy-intensive fabrication plants.
The broader semiconductor sector experienced significant volatility, with India Times reporting that memory chipmakers including SK Hynix and Samsung saw their combined market value decline by approximately $200bn amid the escalating tensions.
Despite Thursday's decline, TSMC's underlying business fundamentals remain robust. The company reported consolidated net revenue of NT$317.66bn for February 2026, representing a 22.2% increase year-over-year, according to regulatory filings. Combined revenue for January and February 2026 reached NT$718.91bn, a 29.9% increase over the same period in 2025 and a record high for the company.
TSMC management has stated the company is monitoring the situation and does not anticipate significant disruptions to operations at this time, maintaining contingency plans for various geopolitical scenarios. The chipmaker remains the world's largest dedicated independent semiconductor foundry and has benefited from sustained demand for artificial intelligence chips, with Nvidia emerging as its largest customer.
Analysts maintain a broadly positive outlook on the stock, with consensus target prices at $421.49—representing approximately 24% upside from current levels. According to market data, 18 analysts rate the shares as buy or strong buy, compared to just one hold rating and no sell recommendations.
However, investors appear to be pricing in increased risk premiums as the conflict shows little sign of de-escalation. The stock remains well below its 52-week high of $390.21 reached earlier this year, though it has still more than doubled from its 52-week low of $133.15.
Market participants will be closely watching for any updates from TSMC regarding inventory levels of critical materials and the company's ability to secure alternative supply sources should Middle Eastern exports face sustained disruption. The situation underscores the semiconductor industry's dependence on geographically concentrated supply chains and highlights potential vulnerabilities that have drawn increased scrutiny from both investors and policymakers in recent years.