MDB MongoDB, Inc.: institutional ownership and insider trading
957 funds reported holding $33.3B of MongoDB, Inc. in their latest 13F filings; in Q2 2026 funds net bought $2.07B, with 157 new positions and 105 funds selling out; over the last 12 months insiders bought $0 and sold $116M on the open market.
Famous investors holding MDB
- Mason Morfit (ValueAct Capital): $55.7M, 1.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $275M, 0.1% of the portfolio
- Ken Griffin (Citadel Advisors): $835M, 0.1% of the portfolio
- Izzy Englander (Millennium Management): $178M, 0.1% of the portfolio
- Ray Dalio (Bridgewater Associates): $12.2M, 0.1% of the portfolio
- Two Sigma (Two Sigma Investments): $18.7M, 0.0% of the portfolio
Largest institutional holders of MDB
- VANGUARD GROUP INC — $3.63B
- BlackRock, Inc. (BLK) — $2.15B
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $1.67B
- VANGUARD PORTFOLIO MANAGEMENT LLC — $1.50B
- FMR LLC — $1.23B
- VANGUARD CAPITAL MANAGEMENT LLC — $1.18B
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main — $845M
- CITADEL ADVISORS LLC — $835M
- PRICE T ROWE ASSOCIATES INC /MD/ — $697M
- STATE STREET CORP (STT, STT-PG) — $650M
Recent MDB insider trades
- Oct 13, 2026: Agrawal Archana sold 1,000 shares ($400K)
- Oct 9, 2026: Merriman Dwight A sold 14,000 shares ($5.06M)
- Oct 6, 2026: Hazard Charles M Jr sold 595 shares ($216K)
- Sep 17, 2026: Cochran Hope F sold 1,000 shares ($376K)
Members of Congress trading MDB
- May 14, 2026: Gilbert Ray Cisneros, Jr. sold $1.00K–$15.0K
- Nov 18, 2025: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Oct 17, 2025: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Sep 12, 2025: Gilbert Ray Cisneros, Jr. bought $1.00K–$15.0K
- Oct 17, 2024: Josh Gottheimer sold $1.00K–$15.0K
- Feb 8, 2024: Josh Gottheimer sold part of $1.00K–$15.0K
5%+ owners
- Vanguard Portfolio Management: 5.6% (Schedule 13G, filed Apr 29, 2026)
- Vanguard Capital Management: 5.3% (Schedule 13G, filed Apr 30, 2026)