On June 4, Vicor Corporation fell 8.22% in regular trading, trading at $310.52/share, with trading volume of $23.90 million. The stock extended its accelerating pullback following a sharp rally earlier.

On the news front, the company had previously raised its Q2 revenue guidance to $142 million, far exceeding the market consensus of $125.5 million, which propelled shares from approximately $268 to nearly $348 in a short period — a cumulative gain exceeding 30%. However, multiple insiders have been aggressively liquidating shares in the $313–$330 range. Major shareholder Patrizio Vinciarelli sold thousands of shares across multiple transactions on May 29, June 1, and June 2. Directors Davies Philip D and Schmidt James F also sold significant blocks on June 1, while Director D'Amico Andrew had previously sold at $320–$324. The concentrated insider selling, combined with heavy profit-taking from earlier buyers, has significantly intensified selling pressure and widened the correction from recent highs.

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