MongoDB
777 hedge funds and large institutions have $22.7B invested in MongoDB in 2025 Q3 according to their latest regulatory filings, with 190 funds opening new positions, 248 increasing their positions, 250 reducing their positions, and 96 closing their positions.
98% more first-time investments, than exits
New positions opened: 190 | Existing positions closed: 96
57% more capital invested
Capital invested by funds: $14.5B → $22.7B (+$8.21B)
12% more funds holding
Funds holding: 692 → 777 (+85)
6.61% more ownership
Funds ownership: 84.58% → 91.19% (+6.6%)
0% more funds holding in top 10
Funds holding in top 10: 16 → 16 (0)
1% less repeat investments, than reductions
Existing positions increased: 248 | Existing positions reduced: 250
26% less call options, than puts
Call options by funds: $2.63B | Put options by funds: $3.56B
Top Buyers
Top Sellers
MDB Hedge Fund Activity: Q3 2025 in Review
777 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in MongoDB (MDB) for Q3 2025, worth a combined $22.7B — up 57% from $14.5B a quarter earlier.
Buyers outnumbered sellers: 190 funds opened new MDB positions and 96 closed out — a net gain of 94 holders — while 248 added to existing stakes and 250 trimmed.
The largest buyer was T. Rowe Price Associates, adding an estimated $473M. The largest seller was Fidelity International, cutting an estimated $301M.
- 777 institutional investors held MongoDB (MDB) as of Q3 2025, up from 692 in Q2 2025.
- Funds reported $22.7B of MongoDB stock for Q3 2025, up 57% quarter-over-quarter.
- 190 funds opened new MongoDB positions in Q3 2025 and 96 closed out, a net change of +94 holders.
- The largest MongoDB buyer in Q3 2025 was T. Rowe Price Associates, an estimated $473M added.
- The largest MongoDB seller in Q3 2025 was Fidelity International, an estimated $301M sold.
Based on aggregated 13F filings for Q3 2025.