Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in MOS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 24.8M | $524.5M | +4.7% | 7.787% | 0.01% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 20.7M | $439.6M | +0.5% | 6.527% | 0.01% |
| 3 | AQR CAPITAL MANAGEMENT LLC | 18.3M | $387.6M | +67.4% | 5.755% | 0.14% |
| 4 | STATE STREET CORP | 15.0M | $318.7M | +12.2% | 4.732% | 0.00% |
| 5 | Invesco Ltd. | 14.9M | $315.8M | +32.6% | 4.689% | 0.02% |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 14.8M | $312.8M | -3.6% | 4.643% | 0.01% |
| 7 | DIMENSIONAL FUND ADVISORS LP | 14.4M | $305.4M | +1.2% | 4.534% | 0.06% |
| 8 | FMR LLC | 13.2M | $279.7M | -54.6% | 4.153% | 0.01% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 8.9M | $188.7M | +1.9% | 2.806% | 0.01% |
| 10 | DONALD SMITH & CO., INC. | 7.7M | $163.7M | +67.3% | 2.430% | 2.90% |
| 11 | MILLENNIUM MANAGEMENT LLC | 7.3M | $155.0M | +700.2% | 2.301% | 0.06% |
| 12 | CITADEL ADVISORS LLC | 5.8M | $123.7M | -20.0% | 1.837% | 0.01% |
| 13 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 5.7M | $119.9M | +25.0% | 1.781% | 0.01% |
| 14 | JANE STREET GROUP, LLC | 5.5M | $115.8M | +45.3% | 1.719% | 0.01% |
| 15 | MORGAN STANLEY | 5.2M | $109.2M | +5.0% | 1.621% | 0.01% |
| 16 | NORTHERN TRUST CORP | 5.1M | $108.9M | -0.7% | 1.617% | 0.01% |
| 17 | NORGES BANK | 4.6M | $97.2M | — | 1.444% | 0.01% |
| 18 | GOLDMAN SACHS GROUP INC | 4.2M | $88.9M | -46.3% | 1.320% | 0.01% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 4.2M | $88.2M | +6.7% | 1.309% | 0.01% |
| 20 | UBS Group AG | 3.9M | $81.9M | +84.5% | 1.216% | 0.01% |
| 21 | Nykredit A/S | 3.7M | $78.3M | — | 1.162% | 0.13% |
| 22 | DEUTSCHE BANK AG\ | 3.5M | $73.1M | +20.6% | 1.085% | 0.02% |
| 23 | CITIGROUP INC | 3.4M | $72.5M | +293.9% | 1.076% | 0.02% |
| 24 | Capital International Investors | 2.8M | $59.0M | — | 0.876% | 0.01% |
| 25 | WELLINGTON MANAGEMENT GROUP LLP | 2.8M | $58.4M | +8.8% | 0.867% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MOS — a direct measure of their conviction.
Filings activity in MOS during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new MOS position in Q2 2026
Institutions that fully closed their MOS position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 669 | 3.7% | 102.51% | +7.49 pp | $6.67B | 8.3% |
| Q1 2026 | 695 | +6.4% | 95.02% | +0.49 pp | $7.28B | +0.7% |
| Q4 2025 | 653 | 6.4% | 94.53% | 2.31 pp | $7.23B | 30% |
| Q3 2025 | 698 | +2.3% | 96.84% | +5.22 pp | $10.27B | +1.7% |
| Q2 2025 | 682 | +13% | 91.62% | +6.53 pp | $10.10B | +55% |
| Q1 2025 | 606 | +0.8% | 85.09% | +0.65 pp | $6.50B | +11% |
| Q4 2024 | 601 | 0.7% | 84.44% | +1.98 pp | $5.88B | 6.4% |
| Q3 2024 | 605 | — | 82.46% | — | $6.28B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MOS stock.
Based on Q2 2026 13F filings, institutional ownership of The Mosaic Company stands at 102.5%, held across 669 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MOS, with approximately 24,751,481 shares worth $0.52B as of Q2 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of MOS, including MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, JANE STREET GROUP, LLC.
Our composite Smart Money Score for MOS is 61 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
90 institutions opened new positions in MOS during Q2 2026, while 126 fully exited. 161 added to existing positions and 397 trimmed.
MOS institutional ownership rose by 7.49 percentage points quarter-over-quarter, with a net change of -26 holders.
The top 10 institutions account for 48.5% of all reported 13F value in MOS, and the top 25 account for 69.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
The Mosaic Company (MOS) Institutional Ownership