Building Materials Stocks Surge 8% Amid Housing Market Concerns, Adding Over $1 Billion in a Day

Builders FirstSource (ticker: BLDR) saw its shares surge 8.1% on the New York Stock Exchange on June 17, closing at $82.31. Trading volume climbed to about 1.21 million shares, and its market capitalization swelled to roughly $8.9 billion (approximately KRW 12 trillion), marking a one-day gain of about $780 million (around KRW 1.1 trillion).

In May, the company approved an additional share repurchase program of up to $500 million. At its recent annual meeting, it unveiled a governance and shareholder-return initiative by naming Mike Heller, its head of human resources and organizational development, as next chief operating officer under its succession plan.

Headquartered in Irving, Texas, Builders FirstSource is the largest U.S. supplier of residential building materials and structural components. It has grown through dozens of acquisitions, most recently agreeing in January 2026 to acquire the assets of New York–based wall and truss manufacturer Premium Building Components.

Although a housing slowdown is expected to cut 2025 EBITDA by about one-third, raising leverage, S&P upgraded the company’s credit outlook from negative to stable in March, noting potential for financial improvement as the cycle recovers.