Who owns Mosaic (MOS)
Which tracked institutional funds hold MOS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MOS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
114 tracked funds added or opened MOS while 229 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MOS’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes MOS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MOS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 623 tracked filers holding MOS, 360 increased or opened the position and 367 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MOS between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 34
- Nykredit A/S$108M
- Capital International Investors$59M
- Maple Rock Capital Partners Inc.$57M
- GATE CITY CAPITAL MANAGEMENT, LLC$28M
- SailingStone Capital Partners LLC$25M
- Kopernik Global Investors, LLC$24M
Full exits 70
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$83M
- THOMPSON SIEGEL & WALMSLEY LLC$77M
- LSV ASSET MANAGEMENT$39M
- Amundi$38M
- Randolph Co Inc$35M
- S&CO INC$25M
Largest adds
- MILLENNIUM MANAGEMENT LLC$134M
- AQR CAPITAL MANAGEMENT LLC$111M
- BlackRock, Inc.$75M
- DONALD SMITH & CO., INC.$46M
- CITIGROUP INC$39M
- Invesco Ltd.$33M
Largest trims
- FMR LLC$462M
- VANGUARD CAPITAL MANAGEMENT LLC$87M
- GOLDMAN SACHS GROUP INC$84M
- VANGUARD PORTFOLIO MANAGEMENT LLC$78M
- PRICE T ROWE ASSOCIATES INC /MD/$67M
- DIMENSIONAL FUND ADVISORS LP$58M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 24,751,481 | $524M | 9.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 20,744,667 | $440M | 7.6% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 18,292,494 | $388M | 6.7% | 2026-Q2 |
| STATE STREET CORP added | 15,039,070 | $319M | 5.5% | 2026-Q2 |
| Invesco Ltd. added | 14,904,222 | $316M | 5.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 14,759,347 | $313M | 5.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 14,411,407 | $305M | 5.3% | 2026-Q2 |
| FMR LLC trimmed | 13,199,733 | $280M | 4.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 8,919,117 | $189M | 3.3% | 2026-Q2 |
| DONALD SMITH & CO., INC. added | 7,723,547 | $164M | 2.8% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 6,591,349 | $140M | 2.4% | 2026-Q2 |
| MORGAN STANLEY added | 5,152,979 | $109M | 1.9% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 5,138,691 | $109M | 1.9% | 2026-Q2 |
| Nykredit A/S new | 5,112,277 | $108M | 1.9% | 2026-Q2 |
| NORGES BANK trimmed | 4,587,982 | $97M | 1.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 4,195,842 | $89M | 1.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 4,161,262 | $88M | 1.5% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 3,450,286 | $73M | 1.3% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 3,447,391 | $73M | 1.3% | 2026-Q2 |
| UBS Group AG added | 3,343,319 | $71M | 1.2% | 2026-Q2 |
| Capital International Investors new | 2,784,080 | $59M | 1.0% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 2,755,216 | $58M | 1.0% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 2,703,415 | $57M | 1.0% | 2026-Q2 |
| Maple Rock Capital Partners Inc. new | 2,680,000 | $57M | 1.0% | 2026-Q2 |
| Allianz Asset Management GmbH added | 2,678,708 | $58M | 1.0% | 2026-Q2 |
| CITIGROUP INC added | 2,384,204 | $51M | 0.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 2,326,512 | $49M | 0.9% | 2026-Q2 |
| DNB Asset Management AS | 2,253,961 | $48M | 0.8% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 2,036,970 | $43M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 1,784,632 | $38M | 0.7% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 1,622,771 | $34M | 0.6% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 1,532,192 | $32M | 0.6% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 1,374,456 | $29M | 0.5% | 2026-Q2 |
| Grantham, Mayo, Van Otterloo & Co. LLC added | 1,342,000 | $28M | 0.5% | 2026-Q2 |
| GATE CITY CAPITAL MANAGEMENT, LLC added | 1,300,000 | $28M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 1,193,279 | $27M | 0.5% | 2026-Q2 |
| SailingStone Capital Partners LLC new | 1,187,332 | $25M | 0.4% | 2026-Q2 |
| Goehring & Rozencwajg Associates, LLC added | 1,178,956 | $25M | 0.4% | 2026-Q2 |
| Nuveen, LLC trimmed | 1,131,753 | $24M | 0.4% | 2026-Q2 |
| Kopernik Global Investors, LLC new | 1,119,095 | $24M | 0.4% | 2026-Q2 |
| BARCLAYS PLC added | 1,087,529 | $23M | 0.4% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 1,031,078 | $22M | 0.4% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,003,763 | $21M | 0.4% | 2026-Q2 |
| STOREBRAND ASSET MANAGEMENT AS trimmed | 999,721 | $21M | 0.4% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 990,020 | $21M | 0.4% | 2026-Q2 |
| Holocene Advisors, LP added | 984,226 | $21M | 0.4% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 978,462 | $21M | 0.4% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 946,286 | $20M | 0.3% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC added | 902,630 | $19M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 896,591 | $19M | 0.3% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 893,900 | $19M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 880,077 | $19M | 0.3% | 2026-Q2 |
| BW Gestao de Investimentos Ltda. new | 873,053 | $18M | 0.3% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 868,548 | $18M | 0.3% | 2026-Q2 |
| Cerity Partners LLC added | 867,364 | $18M | 0.3% | 2026-Q2 |
| AEGIS FINANCIAL CORP | 853,638 | $18M | 0.3% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 844,986 | $18M | 0.3% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP trimmed | 817,822 | $17M | 0.3% | 2026-Q2 |
| Terril Brothers, Inc. trimmed | 762,320 | $16M | 0.3% | 2026-Q2 |
| MANAGED ASSET PORTFOLIOS, LLC added | 761,336 | $16M | 0.3% | 2026-Q2 |
| Legal & General Group Plc added | 760,316 | $16M | 0.3% | 2026-Q2 |
| IMC-Chicago, LLC added | 758,223 | $16M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 751,995 | $16M | 0.3% | 2026-Q2 |
| Caisse de depot et placement du Quebec trimmed | 741,964 | $16M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 711,467 | $15M | 0.3% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 710,858 | $15M | 0.3% | 2026-Q2 |
| EDMOND DE ROTHSCHILD HOLDING S.A. added | 700,000 | $15M | 0.3% | 2026-Q2 |
| FOUNDATION RESOURCE MANAGEMENT INC added | 694,864 | $15M | 0.3% | 2026-Q2 |
| Mariner, LLC added | 664,233 | $14M | 0.2% | 2026-Q2 |
| M&G PLC added | 657,974 | $14M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 639,637 | $14M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 637,144 | $14M | 0.2% | 2026-Q2 |
| Woodline Partners LP trimmed | 617,106 | $13M | 0.2% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 607,889 | $13M | 0.2% | 2026-Q2 |
| COLRAIN CAPITAL LLC added | 576,178 | $12M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 544,043 | $12M | 0.2% | 2026-Q2 |
| Newport Trust Company, LLC trimmed | 529,218 | $11M | 0.2% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC added | 494,520 | $10M | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 482,772 | $10M | 0.2% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 433,320 | $9M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 425,630 | $9M | 0.2% | 2026-Q2 |
| Creative Planning added | 415,150 | $9M | 0.2% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. trimmed | 403,582 | $9M | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 389,740 | $8M | 0.1% | 2026-Q2 |
| ABBINGTON INVESTMENT GROUP added | 381,294 | $8M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 368,161 | $8M | 0.1% | 2026-Q2 |
| Sage Capital Advisors,llc trimmed | 357,336 | $8M | 0.1% | 2026-Q2 |
| Lighthouse Investment Partners, LLC added | 356,438 | $8M | 0.1% | 2026-Q2 |
| CWA Asset Management Group, LLC added | 354,294 | $8M | 0.1% | 2026-Q2 |
| Swedbank AB trimmed | 343,200 | $7M | 0.1% | 2026-Q2 |
| Titan Wealth (CI) Ltd added | 319,916 | $7M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 314,106 | $8M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 312,378 | $7M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 295,756 | $6M | 0.1% | 2026-Q2 |
| Jupiter Topco LLC new | 293,884 | $6M | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 293,078 | $6M | 0.1% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 287,284 | $6M | 0.1% | 2026-Q2 |
| Bleakley Financial Group, LLC added | 281,809 | $6M | 0.1% | 2026-Q2 |
| MMCAP International Inc. SPC added | 257,538 | $5M | 0.1% | 2026-Q2 |
| Lloyd Harbor Capital Management, LLC trimmed | 255,000 | $5M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.