U.S. Aerospace and Defense Materials Stocks Surge Nearly 3 Trillion Won in One Day

ATI Inc. (ATI) shares jumped 8.4% on the New York Stock Exchange to close at $146.88, roughly ₩225,000. Its market capitalization swelled to about $20.1 billion (₩30.8 trillion), adding approximately $1.84 billion (₩2.8 trillion) in a single day. Some 1.58 million ATI shares changed hands as buying interest intensified.

In its early-February fourth-quarter results, revenue rose a modest 0.4% year-on-year, yet the company set a target of $1 billion in adjusted EBITDA for 2026 and announced plans to expand capital expenditures—including nickel-alloy capacity additions—citing strong aerospace and defense demand. (ainvest.com)

In the 2025 annual report released March 24, ATI highlighted 5% revenue growth, a 51% increase in operating cash flow, a $620 million share-repurchase program, and a backlog of about $3.7 billion. On March 30, European media noted that, despite robust aerospace and defense demand, valuation pressures have risen. (sahmcapital.com)

Headquartered in Dallas, Texas, ATI is a U.S. producer of high-performance specialty materials—such as titanium and nickel alloys and superalloys—supplying the jet-engine, defense-system, electronics, medical, and specialty-energy markets. (en.wikipedia.org)

Because a significant portion of its sales is concentrated in aerospace and defense, ATI is viewed as a direct beneficiary of expanding global aircraft production and rising defense budgets. (sahmcapital.com)