Vanguard Capital Management LLC Acquires 5.28% Stake in Power Integrations Inc

On April 30, 2026, Vanguard Capital Management LLC filed a Schedule 13G with the SEC, reporting a new 5.28% ownership stake in Power Integrations Inc (POWI). As of the event date on March 31, 2026, the firm beneficially owns 2,932,458 shares of common stock. The filing indicates that Vanguard holds sole dispositive power over the entire 2,932,458 shares, while maintaining sole voting power over 425,539 shares. The reported holdings include securities managed by various affiliates, including Vanguard Asset Management Limited and Vanguard Global Advisers, LLC. This position was acquired in the ordinary course of business and is not intended to influence or change the control of the issuer. This filing represents a significant increase from a previously reported 0.0% ownership, crossing the 5% regulatory threshold. No other single person's interest in these securities exceeds 5% of the total shares outstanding.