Vanguard Capital Management Establishes 5.26% Stake in MongoDB Inc

On April 30, 2026, Vanguard Capital Management LLC filed a Schedule 13G with the SEC, reporting a new 5.26% stake in MongoDB Inc (MDB). As of the event date of March 31, 2026, Vanguard beneficially owns 4,228,919 shares of Common Stock. The filing indicates that Vanguard holds sole dispositive power over all 4,228,919 shares, while possessing sole voting power over 710,080 shares. The reported holdings include securities managed by various affiliates, including Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC, and Vanguard Investments Australia Ltd. This position was acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. This filing marks a significant increase from a previous ownership level of 0.0%, establishing Vanguard as a major institutional shareholder in the data platform company.