MongoDB, Inc. (MDB) Ownership
MDB ownership summary
as of October 18, 2026- Institutions
- 96.6% of shares outstanding
- Insiders
- 2.56% of shares outstanding
- Shares outstanding
- 80.4M
- Float
- 78.6M shares available to trade
- Short interest
- 3.61% 2.8M shares short
- Days to cover
- 0.86 short interest down 1.7% vs prior month
- Institutions 96.65%
- Insiders 2.56%
- Other investors 0.79%
MDB top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.87% | 6.3M | $2.14B | +616,960 (+10.8%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 5.56% | 4.5M | $1.51B | −23,454 (−0.5%) | June 30, 2026 |
| 3 | FMR Inc | 4.54% | 3.7M | $1.24B | +1.5M (+66.9%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.35% | 3.5M | $1.18B | −17,862 (−0.5%) | June 30, 2026 |
| 5 | DZ BANK AG Deutsche Zentral-Genossenschaftsbank Frankfurt am Main | 3.12% | 2.5M | $849.0M | +561,767 (+28.8%) | June 30, 2026 |
| 6 | T. Rowe Price Associates, Inc. | 2.58% | 2.1M | $700.3M | −17,917 (−0.9%) | June 30, 2026 |
| 7 | State Street Corp | 2.40% | 1.9M | $652.9M | +89,936 (+4.9%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 1.93% | 1.6M | $524.9M | +27,054 (+1.8%) | June 30, 2026 |
| 9 | AQR Capital Management LLC | 1.87% | 1.5M | $507.6M | +191,644 (+14.6%) | June 30, 2026 |
| 10 | NORGES BANK | 1.74% | 1.4M | $474.1M | +34,798 (+2.5%) | June 30, 2026 |
| 11 | Massachusetts Financial Services Company | 1.57% | 1.3M | $426.6M | +371,946 (+41.7%) | June 30, 2026 |
| 12 | UBS Asset Mgmt Americas Inc | 1.45% | 1.2M | $394.2M | +83,101 (+7.7%) | June 30, 2026 |
| 13 | Fidelity International Ltd | 1.31% | 1.1M | $357.1M | +593,507 (+127.8%) | June 30, 2026 |
| 14 | Amvescap Plc. | 1.28% | 1.0M | $348.2M | +127,563 (+14.1%) | June 30, 2026 |
| 15 | Morgan Stanley - Brokerage Accounts | 1.26% | 1.0M | $343.5M | −200,335 (−16.4%) | June 30, 2026 |
| 16 | Capital World Investors | 1.26% | 1.0M | $343.4M | +12 (+0.0%) | June 30, 2026 |
| 17 | VOYA INVESTMENT MANAGEMENT LLC | 1.08% | 873K | $294.8M | +524,682 (+150.5%) | June 30, 2026 |
| 18 | PRIMECAP Management Company | 1.05% | 846K | $285.6M | +3,275 (+0.4%) | June 30, 2026 |
| 19 | Harel Insurance Invests & Fin Srvcs Ltd | 0.92% | 739K | $249.6M | +189,490 (+34.5%) | June 30, 2026 |
| 20 | SRS Investment Management, LLC | 0.92% | 739K | $249.3M | +211,669 (+40.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 5.1M shares and 4 cut 260K.
MDB top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 3.02% | 2.4M | $820.4M | −5,080 (−0.2%) | August 31, 2026 |
| 2 | Vanguard MStar Mid Cap Index Instl | 2.03% | 1.6M | $552.3M | −17,987 (−1.1%) | September 30, 2026 |
| 3 | Vanguard MStar Growth Index Investor | 1.32% | 1.1M | $359.0M | +77,972 (+7.9%) | September 30, 2026 |
| 4 | Fidelity Select Technology | 1.01% | 813K | $274.3M | −555,608 (−40.6%) | August 31, 2026 |
| 5 | UniGlobal Vorsorge | 0.93% | 752K | $253.9M | +201,154 (+36.5%) | August 31, 2026 |
| 6 | Vanguard Information Technology ETF | 0.84% | 676K | $228.2M | +1,552 (+0.2%) | September 30, 2026 |
| 7 | T. Rowe Price Lrg Cp Gr I | 0.77% | 617K | $208.2M | +136,800 (+28.5%) | September 30, 2026 |
| 8 | Vanguard MStar Mid Cap Growth ETF | 0.74% | 600K | $202.5M | +12,384 (+2.1%) | September 30, 2026 |
| 9 | UniFavorit: Aktien | 0.73% | 590K | $199.0M | +167,000 (+39.5%) | August 31, 2026 |
| 10 | Vanguard Capital Opportunity Inv | 0.64% | 514K | $173.4M | +1,000 (+0.2%) | June 30, 2026 |
| 11 | MFS Growth B | 0.63% | 511K | $172.4M | −9,726 (−1.9%) | August 31, 2026 |
| 12 | Fidelity Global Technology A-Dis-EUR | 0.60% | 486K | $164.0M | −242,187 (−33.3%) | August 31, 2026 |
| 13 | MFS Mid Cap Growth A | 0.52% | 422K | $142.5M | +47,943 (+12.8%) | August 31, 2026 |
| 14 | Swedbank Robur Technology A | 0.50% | 400K | $135.0M | — | September 30, 2026 |
| 15 | iShares Russell Mid-Cap Growth ETF | 0.50% | 399K | $134.8M | −426 (−0.1%) | September 30, 2026 |
| 16 | Fidelity Extended Market Index | 0.49% | 392K | $132.2M | −3,901 (−1.0%) | August 31, 2026 |
| 17 | T. Rowe Price Mid-Cap Growth | 0.47% | 376K | $126.8M | −100,400 (−21.1%) | September 30, 2026 |
| 18 | UniGlobal | 0.46% | 373K | $125.8M | −32 (−0.0%) | August 31, 2026 |
| 19 | Fidelity Global Innovators Cl F | 0.44% | 357K | $120.4M | +356,626 (0.0%) | June 30, 2026 |
| 20 | Fidelity Select Software & IT Svcs Port | 0.43% | 344K | $116.1M | −15,100 (−4.2%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
MDB insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-16 | Dwight A Merriman | Sell | $252.33 | 4,000 | $1.0M |
| 2026-04-14 | Dwight A Merriman | Sell | $236.89 | 8,000 | $1.9M |
| 2026-04-01 | Hope F Cochran | Sell | $249.33 | 1,566 | $390,451 |
| 2026-02-02 | Dwight A Merriman | Sell | $369.75 | 1,190 | $440,002 |
| 2026-01-15 | Dwight A Merriman | Sell | $388.31 | 1,139 | $442,285 |
| 2026-01-14 | Dwight A Merriman | Sell | $407.70 | 10,000 | $4.1M |
| 2026-01-13 | Dwight A Merriman | Sell | $417.73 | 6,000 | $2.5M |
| 2026-01-02 | Dwight A Merriman | Sell | $422.50 | 1,054 | $445,315 |
| 2025-12-17 | Hope F Cochran | Sell | $421.85 | 1,566 | $660,617 |
| 2025-12-16 | Hope F Cochran | Sell | $410.03 | 1,000 | $410,030 |
| 2025-12-12 | Dwight A Merriman | Sell | $417.83 | 10,000 | $4.2M |
| 2025-12-08 | Thomas Bull | Sell | $413.86 | 555 | $229,692 |
| 2025-12-05 | Roelof Botha | Sell | $405.85 | 24,850 | $10.1M |
| 2025-12-02 | Dwight A Merriman | Sell | $410.00 | 4,000 | $1.6M |
| 2025-12-01 | Charles M Hazard Jr | Sell | $326.13 | 833 | $271,666 |
| 2025-12-01 | Charles M Hazard Jr | Sell | $326.13 | 166 | $54,138 |
| 2025-11-18 | Gilbert Ray Cisneros, Jr. | Buy | $337.86 | — | — |
| 2025-11-14 | Dwight A Merriman | Sell | $338.52 | 10,000 | $3.4M |
| 2025-11-12 | Dwight A Merriman | Sell | $372.46 | 6,000 | $2.2M |
| 2025-11-03 | Charles M Hazard Jr | Sell | $383.72 | 166 | $63,698 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
MDB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns MDB
Institutional investors own 96.6% of MongoDB's shares and insiders 2.56%. The largest holder is BlackRock Inc with 7.87% of the shares (6.3M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 4 reduced their stake in the latest filings. Short interest is 3.61% of the float, or 0.86 days of average trading volume. The share count rose 101.6% since 2016.
Related: MDB analyst forecast, MDB key metrics. See the MDB stock overview for the latest quote and news.
MDB ownership FAQ
Who owns the most MongoDB stock?
The largest shareholders of MongoDB are BlackRock Inc (7.87%), Vanguard Portfolio Management, LLC (5.56%), FMR Inc (4.54%), Vanguard Capital Management, LLC (4.35%), DZ BANK AG Deutsche Zentral-Genossenschaftsbank Frankfurt am Main (3.12%).
What percentage of MongoDB is owned by institutions?
Institutions hold 96.6% of MongoDB's shares outstanding; insiders hold 2.56%.
Which funds own MongoDB?
The largest fund holders of MongoDB are Vanguard MStar Total Stk Mkt Idx Invest (3.02%), Vanguard MStar Mid Cap Index Instl (2.03%), Vanguard MStar Growth Index Investor (1.32%), Fidelity Select Technology (1.01%), UniGlobal Vorsorge (0.93%).
What is MongoDB's short interest?
2.8M shares of MongoDB were sold short, 3.61% of the float; at the average daily volume it would take 0.86 days to cover.
Are insiders buying or selling MongoDB?
Of the latest 20 reported insider transactions in MongoDB (since November 3, 2025), 1 were purchases and 19 were sales.
How many shares of MongoDB are outstanding?
MongoDB has 80.4M shares outstanding, of which 78.6M are in the public float.