The Mosaic Company
713 hedge funds and large institutions have $10.3B invested in The Mosaic Company in 2025 Q3 according to their latest regulatory filings, with 104 funds opening new positions, 269 increasing their positions, 228 reducing their positions, and 93 closing their positions.
18% more repeat investments, than reductions
Existing positions increased: 269 | Existing positions reduced: 228
12% more first-time investments, than exits
New positions opened: 104 | Existing positions closed: 93
1% more funds holding
Funds holding: 706 → 713 (+7)
0.89% more ownership
Funds ownership: 92.61% → 93.5% (+0.89%)
1% less call options, than puts
Call options by funds: $276M | Put options by funds: $279M
4% less capital invested
Capital invested by funds: $10.7B → $10.3B (-$429M)
43% less funds holding in top 10
Funds holding in top 10: 7 → 4 (-3)
Top Buyers
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$552M |
| 2 |
AQR Capital Management
Greenwich,
Connecticut
|
+$251M |
| 3 |
Bank of New York Mellon
New York
|
+$134M |
| 4 |
Squarepoint
New York
|
+$59.9M |
| 5 |
Dimensional Fund Advisors
Austin,
Texas
|
+$44.3M |
Top Sellers
| 1 |
Boston Partners
Boston,
Massachusetts
|
-$235M |
| 2 |
D.E. Shaw & Co
New York
|
-$100M |
| 3 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$76.4M |
| 4 |
Millennium Management
New York
|
-$65.3M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
-$64.1M |
MOS Hedge Fund Activity: Q3 2025 in Review
713 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in The Mosaic Company (MOS) for Q3 2025, worth a combined $10.3B — down 4% from $10.7B a quarter earlier.
Buyers outnumbered sellers: 104 funds opened new MOS positions and 93 closed out — a net gain of 11 holders — while 269 added to existing stakes and 228 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $552M. The largest seller was Boston Partners, cutting an estimated $235M.
- 713 institutional investors held The Mosaic Company (MOS) as of Q3 2025, up from 706 in Q2 2025.
- Funds reported $10.3B of The Mosaic Company stock for Q3 2025, down 4% quarter-over-quarter.
- 104 funds opened new The Mosaic Company positions in Q3 2025 and 93 closed out, a net change of +11 holders.
- The largest The Mosaic Company buyer in Q3 2025 was Fidelity Investments, an estimated $552M added.
- The largest The Mosaic Company seller in Q3 2025 was Boston Partners, an estimated $235M sold.
Based on aggregated 13F filings for Q3 2025.