Ranked by reported Q1 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 | FMR LLC | 29.1M | $741.5M | -27.4% | 9.149% | 0.04% |
| 2 | BlackRock, Inc. | 23.6M | $603.0M | -2.7% | 7.440% | 0.01% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 20.6M | $526.2M | β | 6.492% | 0.01% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 15.3M | $390.3M | β | 4.815% | 0.02% |
| 5 | DIMENSIONAL FUND ADVISORS LP | 14.2M | $363.1M | +6.2% | 4.480% | 0.08% |
| 6 | STATE STREET CORP | 13.4M | $341.9M | +1.8% | 4.218% | 0.01% |
| 7 | Invesco Ltd. | 11.2M | $286.5M | -5.1% | 3.535% | 0.04% |
| 8 | AQR CAPITAL MANAGEMENT LLC | 10.9M | $276.5M | +40.8% | 3.437% | 0.13% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 8.8M | $222.8M | +3.2% | 2.753% | 0.01% |
| 10 | GOLDMAN SACHS GROUP INC | 7.8M | $199.3M | +35.5% | 2.459% | 0.02% |
| 11 | CITADEL ADVISORS LLC | 7.3M | $186.2M | β | 2.297% | 0.09% |
| 12 | NORTHERN TRUST CORP | 5.2M | $131.9M | +7.0% | 1.627% | 0.02% |
| 13 | MORGAN STANLEY | 4.9M | $125.2M | -0.9% | 1.544% | 0.01% |
| 14 | DONALD SMITH & CO., INC. | 4.6M | $117.8M | -0.1% | 1.453% | 2.12% |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 4.5M | $115.5M | +42.4% | 1.425% | 0.01% |
| 16 | Bank of New York Mellon Corp | 4.1M | $105.5M | +0.6% | 1.301% | 0.02% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.9M | $99.5M | +2.8% | 1.227% | 0.02% |
| 18 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3.2M | $82.6M | +252.2% | 1.020% | 0.04% |
| 19 | DEUTSCHE BANK AG\ | 2.9M | $73.0M | +15.7% | 0.900% | 0.02% |
| 20 | WELLINGTON MANAGEMENT GROUP LLP | 2.5M | $64.6M | +75.5% | 0.797% | 0.01% |
| 21 | BANK OF AMERICA CORP /DE/ | 2.5M | $63.4M | +7.4% | 0.782% | 0.00% |
| 22 | DnB Asset Management AS | 2.3M | $57.5M | β | 0.709% | 0.20% |
| 23 | Allianz Asset Management GmbH | 2.2M | $56.8M | -2.3% | 0.701% | 0.06% |
| 24 | VICTORY CAPITAL MANAGEMENT INC | 2.1M | $53.8M | -22.7% | 0.664% | 0.03% |
| 25 | UBS Group AG | 2.1M | $53.4M | -21.9% | 0.659% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in MOS β a direct measure of their conviction.
Filings activity in MOS during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new MOS position in Q1 2026
Institutions that fully closed their MOS position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 671 | +5.2% | 97.41% | +1.50 pp | $7.03B | +1.6% |
| Q4 2025 | 638 | 6.6% | 95.91% | 42.52 pp | $6.92B | 31% |
| Q3 2025 | 683 | +0.1% | 138.43% | 1.62 pp | $9.98B | 1.2% |
| Q2 2025 | 682 | +13% | 140.05% | +49.94 pp | $10.10B | +55% |
| Q1 2025 | 606 | +0.8% | 90.11% | +8.56 pp | $6.50B | +11% |
| Q4 2024 | 601 | 0.7% | 81.55% | 5.58 pp | $5.88B | 6.4% |
| Q3 2024 | 605 | 1.9% | 87.13% | 112.86 pp | $6.28B | 63% |
| Q2 2024 | 617 | β | 199.99% | β | $16.77B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MOS stock.
Based on Q1 2026 13F filings, institutional ownership of The Mosaic Company stands at 97.4%, held across 671 reporting institutions.
FMR LLC is the largest reported institutional holder of MOS, with approximately 29,079,010 shares worth $0.74B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of MOS, including CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for MOS is 71 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
148 institutions opened new positions in MOS during Q1 2026, while 115 fully exited. 381 added to existing positions and 136 trimmed.
MOS institutional ownership rose by 1.50 percentage points quarter-over-quarter, with a net change of +33 holders.
The top 10 institutions account for 56.2% of all reported 13F value in MOS, and the top 25 account for 76.0%.
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