On May 26, Vicor Corporation surged 9.33% in regular trading, trading at $299.5/share, with trading volume of $34.23 million. The rally was driven by the company's upward revision of its second-quarter revenue guidance.

On the news front, Vicor raised its Q2 revenue guidance to $142 million, significantly exceeding the FactSet consensus estimate of $125.5 million. The revision was attributed to rising product revenues and royalties from an additional licensee to its patented power technology. This guidance raise comes on top of an already strong FY26Q1 earnings report in which both revenue and earnings per share exceeded market expectations, with capacity expansion progress ahead of schedule and Cerebras confirmed as a core incremental customer.

The stock had previously pulled back from a 13%-plus single-day surge on May 11, pressured by concentrated insider selling near $270 by directors including Tuozzolo Claudio and Schmidt James F. After multiple sessions of profit-taking and technical correction, the stock entered a recovery phase around May 20 and has now broken above prior resistance levels following the positive guidance revision.

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