A tentative peace deal between the United States and Iran sent stocks leaping worldwide on June 15, 2026, while oil prices tumbled — and the biggest winners were some of the most closely watched names in tech.

According to The Washington Post and BNN Bloomberg, the agreement to end the two countries' 100-day war triggered a broad global market rally. AI memory, chip, and quantum computing stocks surged on the news, according to Seeking Alpha.

The gains extended a strong run for semiconductors. The SMH ETF — a benchmark for the chip sector — had already climbed 8.8% in a single week, closing at $619.96 on June 12, reclaiming new highs after a recent pullback, according to reporting aggregated by AOL. High Bandwidth Memory chipmaker Micron Technology was among the names cited as a standout mover, according to MSN.

Individual heavyweights also popped. Taiwan Semiconductor Manufacturing (TSMC) opened up 3.74% on June 15, according to TradingKey. Alphabet's Class A shares (GOOGL) opened up 3.19%, with Class C shares (GOOG) rising 3.10%, also per TradingKey. The Times of India noted that Wall Street rallied broadly, with travel stocks joining AI names in the rebound.

The story matters because it shows how geopolitical risk remains tightly woven into the fortunes of the tech sector — when a major conflict eases, the capital that had been sitting on the sidelines rushes back into high-growth, high-volatility names like chips and AI first.