Hidden Beneficiary Stocks in AI Supply Chain Plunge 10% in a Day, $3 Billion Vanished

Entegris Inc. (NASDAQ: ENTG), a U.S. semiconductor materials supplier, plunged 10.44% on the Nasdaq on June 26, closing at $157.87. The broader chip sector underwent a broad-based correction after an AI-driven rally as valuation pressures and concerns over large-scale investment execution weighed on stocks. With more than 3.8 million shares traded, Entegris’s market capitalization fell to roughly $24 billion (about ₩34 trillion), erasing approximately $2.3 billion (around ₩3 trillion) in a single session.

In the first quarter of fiscal 2026, the company outperformed estimates with about $800 million in revenue and earnings of $0.86 per share. In May, Entegris also strengthened its finance and management team by naming Suki Nagesh as its new Chief Financial Officer. Meanwhile, disclosure that U.S. Representative April McClain Delaney acquired additional Entegris shares between March and May underscored political interest in the company’s growth prospects.

Entegris provides critical specialty gases, chemicals, filters and purification solutions essential to advanced semiconductor manufacturing. As the industry shifts to finer process nodes—driving greater complexity and material usage—the company stands to gain structurally. However, following its acquisition of CMC Materials, Entegris has taken on higher debt, and concerns over a slowdown in the memory market have led several brokerages to downgrade their ratings. Going forward, balancing volatility management with continued performance improvement could become key investment considerations.