Who owns Mattel (MAT)
Which tracked institutional funds hold MAT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MAT 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
57 tracked funds added or opened MAT while 113 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
MAT’s largest tracked holder by dollar value, EdgePoint Investment Group Inc., sizes it at 5.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 5.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MAT 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 373 tracked filers holding MAT, 145 increased or opened the position and 255 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 MAT 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 18
- Freestone Grove Partners LP$16M
- Pine Valley Investments Ltd Liability Co$10M
- MAGARIAN CAPITAL MANAGEMENT, LLC$9M
- ExodusPoint Capital Management, LP$6M
- Fieldview Capital Management, LLC$5M
- Dana Investment Advisors, Inc.$4M
Full exits 32
- LSV ASSET MANAGEMENT$91M
- Interval Partners, LP$17M
- THOMPSON SIEGEL & WALMSLEY LLC$9M
- Galvin, Gaustad & Stein, LLC$8M
- WINTON GROUP Ltd$7M
- Pacer Advisors, Inc.$7M
Largest adds
- FULLER & THALER ASSET MANAGEMENT, INC.$49M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$31M
- CITADEL ADVISORS LLC$24M
- Gotham Asset Management, LLC$22M
- ARIEL INVESTMENTS, LLC$17M
- Alyeska Investment Group, L.P.$16M
Largest trims
- PRICE T ROWE ASSOCIATES INC /MD/$53M
- NORGES BANK$28M
- Point72 Asset Management, L.P.$28M
- D. E. Shaw & Co., Inc.$26M
- PRIMECAP MANAGEMENT CO/CA/$22M
- MARSHALL WACE, LLP$21M
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 |
|---|---|---|---|---|
| EdgePoint Investment Group Inc. added | 51,047,454 | $709M | 17.7% | 2026-Q2 |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 29,505,735 | $410M | 10.2% | 2026-Q2 |
| BlackRock, Inc. added | 26,172,377 | $363M | 9.1% | 2026-Q2 |
| ARIEL INVESTMENTS, LLC added | 15,415,955 | $214M | 5.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 13,168,755 | $183M | 4.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 13,127,051 | $182M | 4.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 12,592,950 | $175M | 4.4% | 2026-Q2 |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ trimmed | 12,322,555 | $171M | 4.3% | 2026-Q2 |
| STATE STREET CORP trimmed | 9,574,099 | $133M | 3.3% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 6,008,450 | $83M | 2.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 5,864,500 | $81M | 2.0% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 5,276,858 | $73M | 1.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 4,779,041 | $66M | 1.7% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 3,548,385 | $49M | 1.2% | 2026-Q2 |
| Squarepoint Ops LLC added | 3,481,088 | $48M | 1.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 3,222,360 | $45M | 1.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 3,148,361 | $44M | 1.1% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 2,915,888 | $40M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 2,664,600 | $37M | 0.9% | 2026-Q2 |
| NORGES BANK trimmed | 2,649,546 | $37M | 0.9% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 2,618,879 | $36M | 0.9% | 2026-Q2 |
| UBS Group AG added | 2,608,886 | $36M | 0.9% | 2026-Q2 |
| Long Focus Capital Management, LLC added | 2,540,000 | $35M | 0.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 2,529,841 | $35M | 0.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 2,413,407 | $33M | 0.8% | 2026-Q2 |
| Gotham Asset Management, LLC added | 2,401,597 | $33M | 0.8% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 2,384,941 | $33M | 0.8% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 2,215,932 | $31M | 0.8% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 2,180,720 | $30M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 1,836,551 | $25M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 1,685,407 | $23M | 0.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 1,480,276 | $21M | 0.5% | 2026-Q2 |
| Man Group plc added | 1,334,961 | $19M | 0.5% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 1,322,310 | $18M | 0.5% | 2026-Q2 |
| HBK INVESTMENTS L P | 1,300,000 | $18M | 0.5% | 2026-Q2 |
| KING LUTHER CAPITAL MANAGEMENT CORP trimmed | 1,198,330 | $17M | 0.4% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 1,158,195 | $16M | 0.4% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 1,135,171 | $16M | 0.4% | 2026-Q2 |
| Freestone Grove Partners LP trimmed | 1,120,413 | $16M | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 1,119,581 | $16M | 0.4% | 2026-Q2 |
| EDMOND DE ROTHSCHILD HOLDING S.A. added | 1,040,000 | $14M | 0.4% | 2026-Q2 |
| SERENITY CAPITAL MANAGEMENT PTE. LTD. trimmed | 1,000,000 | $14M | 0.3% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 889,930 | $12M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 854,546 | $12M | 0.3% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 820,919 | $11M | 0.3% | 2026-Q2 |
| CastleKnight Management LP added | 782,376 | $11M | 0.3% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 758,776 | $11M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 757,518 | $11M | 0.3% | 2026-Q2 |
| Pine Valley Investments Ltd Liability Co new | 725,249 | $10M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 686,202 | $10M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 678,963 | $9M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 659,922 | $9M | 0.2% | 2026-Q2 |
| MAGARIAN CAPITAL MANAGEMENT, LLC new | 657,210 | $9M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 583,100 | $8M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 580,862 | $8M | 0.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 561,034 | $8M | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 554,626 | $8M | 0.2% | 2026-Q2 |
| Holocene Advisors, LP added | 553,431 | $8M | 0.2% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD | 496,831 | $7M | 0.2% | 2026-Q2 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC added | 448,887 | $6M | 0.2% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 442,483 | $6M | 0.2% | 2026-Q2 |
| Trexquant Investment LP added | 424,419 | $6M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 402,821 | $6M | 0.1% | 2026-Q2 |
| Illinois Municipal Retirement Fund added | 402,720 | $6M | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 402,495 | $6M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 373,028 | $5M | 0.1% | 2026-Q2 |
| SummitTX Capital, L.P. added | 365,935 | $5M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 342,093 | $5M | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL trimmed | 341,924 | $5M | 0.1% | 2026-Q2 |
| Fieldview Capital Management, LLC added | 338,980 | $5M | 0.1% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 334,904 | $5M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 334,882 | $5M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 326,704 | $5M | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 320,613 | $4M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 315,300 | $4M | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 302,362 | $4M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 300,564 | $4M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 293,839 | $4M | 0.1% | 2026-Q2 |
| Dana Investment Advisors, Inc. new | 287,604 | $4M | 0.1% | 2026-Q2 |
| Foyston, Gordon & Payne Inc added | 283,312 | $4M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 277,552 | $4M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 274,993 | $4M | 0.1% | 2026-Q2 |
| Grantham, Mayo, Van Otterloo & Co. LLC added | 273,280 | $4M | 0.1% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 270,901 | $4M | 0.1% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 270,627 | $4M | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD | 254,000 | $4M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 252,690 | $4M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 251,469 | $3M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 248,156 | $3M | 0.1% | 2026-Q2 |
| Seven Six Capital Management, LLC added | 233,200 | $3M | 0.1% | 2026-Q2 |
| GREAT LAKES ADVISORS, LLC added | 226,701 | $3M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP added | 221,840 | $3M | 0.1% | 2026-Q2 |
| CAXTON ASSOCIATES LLP added | 200,681 | $3M | 0.1% | 2026-Q2 |
| BARINGTON COMPANIES MANAGEMENT, LLC trimmed | 200,000 | $3M | 0.1% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP new | 192,399 | $3M | 0.1% | 2026-Q2 |
| Quinn Opportunity Partners LLC | 183,070 | $3M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP trimmed | 175,404 | $2M | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 167,951 | $2M | 0.1% | 2026-Q2 |
| Tidal Investments LLC added | 160,814 | $2M | 0.1% | 2026-Q2 |
| Livforsakringsbolaget Skandia, Omsesidigt trimmed | 12,200 | $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.