MOS Institutional Ownership
Who owns Mosaic Co and what the big funds did with it last quarter, from every SEC 13F filing. 669 funds reported holding MOS at Jun 30, 2026, together owning 95.4% of the company.
- ●371 buying vs 339 selling
- ▲Held by funds +6.5 pts
- ▼Funds holding -33
- ▲Superinvestors: 2 added, 1 cut
- ▼Put/call 0.42 to 0.48
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 669 | 702 | −4.7% |
| In funds' top 10 | 5 | 7 | −28.6% |
| 13F shares | 303M | 283M | +7.3% |
| Held by funds | 95.4% | 89.0% | +6.5 pts |
| New positions | 92 | 133 | −30.8% |
| Increased | 279 | 277 | +0.7% |
| Reduced | 212 | 188 | +12.8% |
| Sold out | 127 | 96 | +32.3% |
| Calls (shares) | 6.9M | 5.5M | +25.7% |
| Puts (shares) | 3.1M | 2.3M | +31.1% |
| Put/call ratio | 0.48 | 0.42 | +12.9% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in MOS
All superinvestors →
Who owns MOS
share of fund held shares- Index and passive funds42.5%
- Active managers and hedge funds41.7%
- Banks and brokers12.8%
- Pensions, insurers and other2.9%
The top 10 holders own 50.3% of all MOS shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
206 funds changed their position- Lingotto Investment Management LLPNew+13.3M sh
- Swedbank ABSold out−343K sh
- Fideuram - Intesa Sanpaolo Private Banking S.p.a.Added+317K sh
- CWA Asset Management Group, LLCAdded+298K sh
- Assenagon Asset Management S.A.Trimmed−249K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.79% | 24.8M | $524M | +1.1M |
| 2 | Vanguard Capital Management LLC | 6.53% | 20.7M | $440M | +109K |
| 3 | AQR Capital Management LLC | 5.75% | 18.3M | $388M | +7.4M |
| 4 | State Street Corp | 4.73% | 15M | $319M | +1.6M |
| 5 | Invesco Ltd. | 4.69% | 14.9M | $316M | +3.7M |
| 6 | Vanguard Portfolio Management LLC | 4.64% | 14.8M | $313M | −546K |
| 7 | Dimensional Fund Advisors LP | 4.53% | 14.4M | $305M | +171K |
| 8 | Fmr LLC | 4.15% | 13.2M | $280M | −15.9M |
| 9 | Geode Capital Management, LLC | 2.81% | 8.9M | $189M | +168K |
| 10 | Donald Smith & Co., Inc. | 2.43% | 7.7M | $164M | +3.1M |
- AQR Capital Management LLC+7.4M sh+$156M
- Millennium Management LLC+6.4M sh+$135M
- Norges Bank+4.6M sh+$97.2M
- Invesco Ltd.+3.7M sh+$77.7M
- Donald Smith & Co., Inc.+3.1M sh+$65.8M
- Capital International Investors+2.8M sh+$59M
- Maple Rock Capital Partners Inc.+2.7M sh+$56.8M
- Citigroup Inc+1.9M sh+$40.8M
- Fmr LLC−15.9M sh−$336M
- Arrowstreet Capital, Limited Partnership−3.2M sh−$82.6M
- Goldman Sachs Group Inc−2.6M sh−$54.9M
- Citadel Advisors LLC−2.1M sh−$44.3M
- Price T Rowe Associates Inc /md/−2M sh−$43.4M
- Marshall Wace, LLP−1.9M sh−$40.8M
- Randolph Co Inc−1.4M sh−$35.2M
- Bank of New York Mellon Corp−1.4M sh−$30.4M
MOS institutional ownership FAQ
Who owns the most MOS stock?
In Q2 2026 13F filings the largest holder of MOS was BlackRock, Inc., followed by Vanguard Capital Management LLC and AQR Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of MOS is owned by institutions?
Funds that file 13F reports held 95.4% of MOS's shares at Jun 30, 2026, compared with 89.0% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying MOS?
In Q2 2026, 371 funds bought MOS (92 of them new positions) and 339 sold (127 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for MOS is neutral.
What is MOS's institutional put/call ratio?
Funds reported $65M of MOS puts against $136M of calls, a put/call ratio of 0.48 (0.42 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this MOS ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.