Vanguard Capital Management Discloses New 5.25% Passive Stake in Lantheus Holdings Inc

On April 30, 2026, Vanguard Capital Management LLC filed a Schedule 13G with the SEC, disclosing a new passive ownership stake in Lantheus Holdings Inc (LNTH). As of the event date on March 31, 2026, the investment adviser reported beneficial ownership of 3,421,414 shares of common stock, representing 5.25% of the company. The filing indicates that Vanguard holds sole dispositive power over all 3,421,414 shares, while maintaining sole voting power over 507,100 shares. This position reflects an increase from a previous 0% ownership level, crossing the 5% regulatory threshold for disclosure. The filing includes holdings from various affiliates, including Vanguard Asset Management Limited and Vanguard Global Advisers, LLC. Vanguard certified that the shares were acquired in the ordinary course of business and not for the purpose of changing or influencing the control of the issuer. No other single person's interest in these securities exceeds 5% of the total shares outstanding.