MATTEL INC (MAT) Top Institutional Shareholders
MATTEL INC (MAT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $4.15B in MAT holdings during the latest filing period.
Edgepoint Investment Group Inc. is currently the largest disclosed institutional shareholder of MAT tracked by InsiderSet, reporting ownership valued at approximately $714.02M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $671.76M, representing an estimated loss of -5.92% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 65% of the total disclosed MAT value among the investors covered in this analysis. Major shareholders include Edgepoint Investment Group Inc., Primecap Management Co/Ca/, Blackrock, Inc., and several other long-term asset managers with concentrated positions in MATTEL INC (MAT).
This page ranks the largest institutional MAT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
423
Total Reported Value
$4.15B
Largest Holder
Edgepoint Investment Group Inc.
Largest Position
$714.02M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
66
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Edgepoint Investment Group Inc. | 5.72% | 49,140,882 | $714,017,015 | $671,755,857 | -$42,261,158 | -5.92% | |
| Primecap Management Co/Ca/ | 0.34% | 29,697,924 | $431,510,852 | $405,970,621 | -$25,540,231 | -5.92% | |
| Blackrock, Inc. | 0.01% | 27,322,293 | $396,992,917 | $373,495,745 | -$23,497,172 | -5.92% | |
| Vanguard Capital Management Llc | 0.00% | 13,657,490 | $198,443,330 | $186,697,888 | -$11,745,442 | -5.92% | |
| Vanguard Portfolio Management Llc | 0.01% | 13,624,399 | $197,962,517 | $186,245,534 | -$11,716,983 | -5.92% | |
| Ariel Appreciation Fund | John W. Rogers Jr. | 2.21% | 13,567,083 | $197,129,716 | $185,462,025 | -$11,667,691 | -5.92% |
| Longleaf Partners | Mason Hawkins | 9.16% | 12,812,157 | $186,160,640 | $175,142,186 | -$11,018,454 | -5.92% |
| Dimensional Fund Advisors Lp | 0.03% | 11,052,845 | $160,590,629 | $151,092,391 | -$9,498,238 | -5.91% | |
| State Street Corp | 0.00% | 9,718,373 | $141,207,960 | $132,850,159 | -$8,357,801 | -5.92% | |
| Geode Capital Management, Llc | 0.01% | 6,174,146 | $89,730,289 | $84,400,576 | -$5,329,713 | -5.94% | |
| Alyeska Investment Group, L.P. | 0.19% | 4,608,679 | $66,964,106 | $63,000,642 | -$3,963,464 | -5.92% | |
| Aqr Capital Management Llc | 0.03% | 4,618,323 | $66,596,219 | $63,132,475 | -$3,463,744 | -5.20% | |
| D. E. Shaw & Co., Inc. | 0.04% | 3,883,399 | $56,425,788 | $53,086,064 | -$3,339,724 | -5.92% | |
| Marshall Wace, Llp | 0.06% | 3,726,579 | $54,147,195 | $50,942,335 | -$3,204,860 | -5.92% | |
| Morgan Stanley | 0.00% | 3,547,424 | $51,544,079 | $48,493,286 | -$3,050,793 | -5.92% | |
| Goldman Sachs Group Inc | 0.01% | 3,543,492 | $51,486,945 | $48,439,536 | -$3,047,409 | -5.92% | |
| Charles Schwab Investment Management Inc | 0.01% | 3,372,877 | $49,007,903 | $46,107,229 | -$2,900,674 | -5.92% | |
| Millennium Management Llc | 0.03% | 2,801,135 | $40,700,492 | $38,291,515 | -$2,408,977 | -5.92% | |
| Northern Trust Corp | 0.01% | 2,794,902 | $40,609,927 | $38,206,310 | -$2,403,617 | -5.92% | |
| Victory Capital Management Inc | 0.02% | 2,589,974 | $37,632,322 | $35,404,945 | -$2,227,377 | -5.92% | |
| Squarepoint Ops Llc | 0.07% | 2,368,621 | $34,416,063 | $32,379,049 | -$2,037,014 | -5.92% | |
| Ubs Group Ag | 0.01% | 2,304,897 | $33,490,154 | $31,507,942 | -$1,982,212 | -5.92% | |
| Point72 Asset Management, L.P. | 0.06% | 2,221,256 | $32,274,850 | $30,364,570 | -$1,910,280 | -5.92% | |
| Sei Investments Co | 0.03% | 2,159,405 | $31,376,177 | $29,519,066 | -$1,857,111 | -5.92% | |
| Serenity Capital Management Pte. Ltd. | 7.02% | 2,002,032 | $29,089,525 | $27,367,777 | -$1,721,748 | -5.92% | |
| Bank Of New York Mellon Corp | 0.01% | 1,946,260 | $28,279,166 | $26,605,374 | -$1,673,792 | -5.92% | |
| Vanguard Fiduciary Trust Co | 0.01% | 1,921,414 | $27,918,145 | $26,265,729 | -$1,652,416 | -5.92% | |
| Long Focus Capital Management, Llc | 1.22% | 1,919,166 | $27,885,482 | $26,234,999 | -$1,650,483 | -5.92% | |
| Bank Of America Corp | 0.00% | 1,914,866 | $27,823,006 | $26,176,218 | -$1,646,788 | -5.92% | |
| Frontier Capital Management Co Llc | 0.25% | 1,691,423 | $24,576,376 | $23,121,752 | -$1,454,624 | -5.92% | |
| Fuller & Thaler Asset Management, Inc. | 0.08% | 1,648,138 | $23,947,451 | $22,530,046 | -$1,417,405 | -5.92% | |
| Oconnor, A Distinct Business Unit Of Ubs Asset Management Americas (Llc) | 2.28% | 973,829 | $19,320,767 | $13,312,242 | -$6,008,525 | -31.10% | |
| Hbk Investments L P | 0.24% | 1,300,000 | $18,889,000 | $17,771,000 | -$1,118,000 | -5.92% | |
| King Luther Capital Management Corp | 0.08% | 1,238,336 | $17,993,022 | $16,928,053 | -$1,064,969 | -5.92% | |
| Quantinno Capital Management Lp | 0.03% | 1,222,491 | $17,762,809 | $16,711,452 | -$1,051,357 | -5.92% | |
| Interval Partners, Lp | 0.60% | 1,193,062 | $17,335,191 | $16,309,158 | -$1,026,033 | -5.92% | |
| Qube Research & Technologies Ltd | 0.02% | 1,159,230 | $16,843,612 | $15,846,674 | -$996,938 | -5.92% | |
| Edmond De Rothschild Holding S.A. | 0.20% | 960,000 | $13,948,800 | $13,123,200 | -$825,600 | -5.92% | |
| Invesco Ltd. | 0.00% | 913,342 | $13,270,861 | $12,485,385 | -$785,476 | -5.92% | |
| Rhumbline Advisers | 0.01% | 805,163 | $11,698,957 | $11,006,578 | -$692,379 | -5.92% | |
| Gotham Asset Management, Llc | 0.04% | 802,437 | $11,659,410 | $10,969,314 | -$690,096 | -5.92% | |
| Castleknight Management Lp | 0.49% | 715,376 | $10,394,413 | $9,779,190 | -$615,223 | -5.92% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 712,914 | $10,358,641 | $9,745,534 | -$613,107 | -5.92% | |
| Principal Financial Group Inc | 0.01% | 694,038 | $10,084,371 | $9,487,499 | -$596,872 | -5.92% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 644,268 | $9,361,214 | $8,807,144 | -$554,070 | -5.92% | |
| Tudor Investment Corp Et Al | 0.05% | 621,062 | $9,024,031 | $8,489,918 | -$534,113 | -5.92% | |
| Swiss National Bank | 0.01% | 615,300 | $8,940,309 | $8,411,151 | -$529,158 | -5.92% | |
| California Public Employees Retirement System | 0.01% | 593,247 | $8,619,879 | $8,109,686 | -$510,193 | -5.92% | |
| American Century Companies Inc | 0.00% | 590,470 | $8,579,529 | $8,071,725 | -$507,804 | -5.92% | |
| Nuveen, Llc | 0.00% | 587,995 | $8,543,567 | $8,037,892 | -$505,675 | -5.92% |
Frequently asked questions about MAT
Who owns the most MAT stock?
The largest holders of MAT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MATTEL INC (MAT).
Is MAT widely held by superinvestors?
Many widely followed stocks like MAT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MAT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.