AI Power Stocks Surge by 1.6 Trillion Won in One Day

Vicor Corporation (NASDAQ: VICR) surged 11.87% on the Nasdaq on April 21, closing at $251.50. That boost lifted its market capitalization to approximately $8.46 billion (about KRW 11.8 trillion), with a one-day gain of roughly $1.14 billion (around KRW 1.6 trillion).

In its pre-market first-quarter report, Vicor posted revenue of $113 million, up about 20% year-over-year, and earnings per share of $0.44—beating analysts’ estimates and confirming strong performance momentum. Citing expanding AI data-center demand, analysts including Roth raised their price target to $245, and the stock’s 11-day winning streak—during which it climbed roughly 44%—has further fueled buying interest.

Headquartered in Andover, Massachusetts, Vicor manufactures high-density DC-DC power converters for AI accelerators, cloud data centers, telecommunications, and industrial equipment. It is viewed by the market as a high-volatility growth stock, poised to benefit from increased AI infrastructure investment alongside news on earnings, order wins, and valuation debates.