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Equibles

MAT

Mattel Inc /De/

Company with tickers: MAT

CIK
63276
CUSIP
577081102
Shares Outstanding
290,569,000
13F Activity (30d)
125 filings 122 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 371
Total Value: $1,738,511,489
Total Shares: 119,649,807
Showing 1–100 of 378 holdings by value · page 1 of 4

Institutional Ownership Trend

25 quarters

Superinvestors Holding MAT

All superinvestors →
Samantha McLemore $55,439,765 Joel Greenblatt $11,659,409 Mario Gabelli $924,544 Ray Dalio $600,423

Holder Concentration

Across 371 13F filers · Δ vs Dec 31, 2025
Top Holder
13.2%
Jun 2023 → Mar 2026 · range 10.8% – 14.6%
+2.4 pts
Top 5
46.9%
Jun 2023 → Mar 2026 · range 38.7% – 50.1%
+8.2 pts
Top 10
61.3%
Jun 2023 → Mar 2026 · range 54.8% – 67.3%
+6.5 pts
HHI
558
Jun 2023 → Mar 2026 · range 417 – 641
Broadly held+140

Quarterly Activity

vs Dec 31, 2025
New
67
Increased
109
Decreased
117
Sold Out
93
Unchanged
78
Holder count: -26
Institutional value: -1.7%
Shares held: +34.3%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid SOUTHEASTERN ASSET MANAGEMENT INC/TN/ +4,241,829 12,812,157
Large MARSHALL WACE, LLP +3,712,984 3,726,579
Mega D. E. Shaw & Co., Inc. +1,412,537 3,883,399
Large SEI INVESTMENTS CO +1,117,726 2,159,405
Mid EDMOND DE ROTHSCHILD HOLDING S.A. +800,000 960,000

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large Squarepoint Ops LLC −1,294,843 2,368,621
Small Galvin, Gaustad & Stein, LLC −703,838 558,382
Mega AMERICAN CENTURY COMPANIES INC −519,455 590,470
Mid CX Institutional −390,214 3,503
Small SERENITY CAPITAL MANAGEMENT PTE. LTD. −383,611 2,002,032

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 29,644,908 $430,740,512
Mega VANGUARD FIDUCIARY TRUST CO 1,921,414 $27,918,145
Mid Long Focus Capital Management, LLC 1,919,166 $27,885,481
Mid HBK INVESTMENTS L P 1,300,000 $18,889,000
Mid Interval Partners, LP 1,193,062 $17,335,190

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mid FRONTIER CAPITAL MANAGEMENT CO LLC 4,215,431 $83,634,151
Mid Patient Capital Management, LLC 2,794,343 $55,439,765
Small Simcoe Capital Management, LLC 2,641,210 $52,401,606
Small Ranmore Fund Management Ltd 2,200,000 $43,648,000
Mega UBS Group AG 1,732,950 $34,381,727
Filter: New 67 Increased 109 Reduced 117 Sold out 93 Unchanged 78
Showing 100 of 378
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega VANGUARD CAPITAL MANAGEMENT LLC $232,297,183 13.36% 15,987,418
Mega VANGUARD CAPITAL MANAGEMENT LLC $198,443,329 11.41% 13,657,490
Mid SOUTHEASTERN ASSET MANAGEMENT INC/TN/ $186,160,640 10.71% 12,812,157
Mega STATE STREET CORP $141,207,959 8.12% 9,718,373
Large LSV ASSET MANAGEMENT $90,643,806 5.21% 6,238,390
Mega GEODE CAPITAL MANAGEMENT, LLC $89,710,341 5.16% 6,174,146
Mega D. E. Shaw & Co., Inc. $56,425,786 3.25% 3,883,399
Large MARSHALL WACE, LLP $54,147,192 3.11% 3,726,579
Mega NORTHERN TRUST CORP Bank $40,609,922 2.34% 2,794,902
Large Squarepoint Ops LLC $34,416,063 1.98% 2,368,621
Large SEI INVESTMENTS CO $31,376,154 1.80% 2,159,405
Small SERENITY CAPITAL MANAGEMENT PTE. LTD. $29,089,524 1.67% 2,002,032
Mega VANGUARD FIDUCIARY TRUST CO Bank $27,918,145 1.61% 1,921,414
Mid Long Focus Capital Management, LLC $27,885,481 1.60% 1,919,166
Mid HBK INVESTMENTS L P $18,889,000 1.09% 1,300,000
Large KING LUTHER CAPITAL MANAGEMENT CORP $17,993,022 1.03% 1,238,336
Large Quantinno Capital Management LP $17,762,794 1.02% 1,222,491
Mid Interval Partners, LP $17,335,190 1.00% 1,193,062
Mid EDMOND DE ROTHSCHILD HOLDING S.A. $13,948,800 0.80% 960,000
Mega RHUMBLINE ADVISERS $11,699,018 0.67% 805,163
Large Gotham Asset Management, LLC $11,659,409 0.67% 802,437
Mid CastleKnight Management LP $10,394,413 0.60% 715,376
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $10,358,635 0.60% 712,914
Mega PRINCIPAL FINANCIAL GROUP INC $10,084,371 0.58% 694,038
Mid THOMPSON SIEGEL & WALMSLEY LLC $9,030,583 0.52% 621,513
Large TUDOR INVESTMENT CORP ET AL $9,024,030 0.52% 621,062
Mega Swiss National Bank Bank $8,940,309 0.51% 615,300
Mega California Public Employees Retirement System Pension $8,619,878 0.50% 593,247
Mega AMERICAN CENTURY COMPANIES INC $8,579,529 0.49% 590,470
Mega Nuveen, LLC $8,543,566 0.49% 587,995
Small Galvin, Gaustad & Stein, LLC $8,113,290 0.47% 558,382
Large Corient Private Wealth LLC $7,818,360 0.45% 538,084
Mid HANCOCK WHITNEY CORP $7,583,729 0.44% 521,936
Mid WINTON GROUP Ltd $7,408,440 0.43% 509,872
Large CAPITAL FUND MANAGEMENT S.A. $7,348,547 0.42% 505,750
Large JUPITER ASSET MANAGEMENT LTD $7,218,954 0.42% 496,831
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $6,939,528 0.40% 477,600
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $6,589,355 0.38% 453,500
Large Man Group plc $6,465,936 0.37% 445,006
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $6,305,308 0.36% 433,951
Mega BNP PARIBAS ARBITRAGE, SA $6,237,133 0.36% 429,259
Mega Legal & General Group Plc $5,963,808 0.34% 410,448
Mega FIRST TRUST ADVISORS LP $5,924,607 0.34% 407,750
Large Trexquant Investment LP $5,774,483 0.33% 397,418
Large Retirement Systems of Alabama Pension $5,536,293 0.32% 381,025
Large Universal- Beteiligungs- und Servicegesellschaft mbH $5,509,005 0.32% 379,147
Large JACOBS LEVY EQUITY MANAGEMENT, INC $5,435,803 0.31% 374,109
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $5,420,431 0.31% 373,051
Large Walleye Capital LLC $5,267,066 0.30% 362,496
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $5,007,633 0.29% 344,641
Large Russell Investments Group, Ltd. $4,545,226 0.26% 312,817
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $4,488,651 0.26% 308,923
Mid Illinois Municipal Retirement Fund Pension $4,368,575 0.25% 300,659
Mid Engineers Gate Manager LP $4,299,688 0.25% 295,918
Mega ENVESTNET ASSET MANAGEMENT INC $4,198,952 0.24% 288,985
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,940,608 0.23% 271,205
Mega Vanguard Global Advisers, LLC $3,672,617 0.21% 252,761
Large Holocene Advisors, LP $3,556,057 0.20% 244,739
Mega VANGUARD ASSET MANAGEMENT, Ltd $3,548,342 0.20% 244,208
Small Havemeyer Place LP $3,451,572 0.20% 237,548
Large GREAT LAKES ADVISORS, LLC $3,260,603 0.19% 224,405
Mid XTX Topco Ltd $2,806,789 0.16% 193,172
Mid Y-Intercept (Hong Kong) Ltd $2,711,850 0.16% 186,638
Mid Quinn Opportunity Partners LLC $2,660,007 0.15% 183,070
Large CANADA LIFE ASSURANCE Co Insurance $2,557,250 0.15% 175,998
Large LAZARD ASSET MANAGEMENT LLC $2,507,587 0.14% 172,580
Mid New Age Alpha Advisors, LLC $2,403,392 0.14% 165,409
Large MetLife Investment Management, LLC $2,221,099 0.13% 152,863
Micro Seven Six Capital Management, LLC $2,109,756 0.12% 145,200
Large AMALGAMATED BANK Bank $2,107,532 0.12% 145,047
Small III Capital Management $2,099,861 0.12% 144,519
Mid Brevan Howard Capital Management LP $2,017,679 0.12% 138,863
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $2,000,199 0.12% 137,660
Large Treasurer of the State of North Carolina $1,922,522 0.11% 132,314
Large State of Tennessee, Department of Treasury $1,906,248 0.11% 131,194
Large Police & Firemen's Retirement System of New Jersey Pension $1,894,072 0.11% 130,356
Large State of New Jersey Common Pension Fund D Pension $1,875,823 0.11% 129,100
Large VOYA INVESTMENT MANAGEMENT LLC $1,859,302 0.11% 127,963
Large Rockefeller Capital Management L.P. $1,843,826 0.11% 126,898
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $1,826,740 0.11% 125,722
Mid MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC $1,730,610 0.10% 119,106
Mid Quantbot Technologies LP $1,688,182 0.10% 116,186
Small FOX RUN MANAGEMENT, L.L.C. $1,625,296 0.09% 111,858
Large Cerity Partners LLC $1,624,220 0.09% 111,784
Large FIFTH THIRD BANCORP Bank $1,588,448 0.09% 109,322
Mid REGIONS FINANCIAL CORP $1,567,045 0.09% 107,849
Mega CITIGROUP INC $1,562,642 0.09% 107,546
Large TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY Pension $1,553,837 0.09% 106,940
Mid SummitTX Capital, L.P. $1,546,021 0.09% 106,402
Mid Weiss Asset Management LP $1,541,633 0.09% 106,100
Mid DARK FOREST CAPITAL MANAGEMENT LP $1,524,531 0.09% 104,923
Small Kennondale Capital Management LLC $1,500,004 0.09% 103,235
Large Robeco Institutional Asset Management B.V. $1,466,919 0.08% 100,958
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $1,416,122 0.08% 97,462
Mid UHLMANN PRICE SECURITIES, LLC Broker-Dealer $1,395,097 0.08% 96,015
Mid YOUSIF CAPITAL MANAGEMENT, LLC $1,382,689 0.08% 95,161
Small Taproot Management LP $1,361,054 0.08% 93,672
Mid Louisiana State Employees Retirement System Pension $1,309,153 0.08% 90,100
Small Foyston, Gordon & Payne Inc $1,280,921 0.07% 88,157
Mid State of Alaska, Department of Revenue $1,263,368 0.07% 86,949

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