Mattel, Inc.
US ˙ NasdaqGS ˙ US5770811025

SecurityMAT / Mattel, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership11,052,845 shares
Latest Disclosed Value $ 160,590,629
Dimensional Fund Advisors Lp reports 7.63% increase in ownership of MAT / Mattel, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 11,052,845 shares of Mattel, Inc. (US:MAT) valued at $160,597,838 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 10,269,743 shares of Mattel, Inc.. This represents a change in shares of 7.63% during the quarter. The current value of the position is $155,624,058 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F MATTEL COM 577081102 11,052,845 783,102 7.63 160,591 -21.18 0.0334
2026-02-12 2025-12-31 13F MATTEL COM 577081102 10,269,743 752,146 7.90 203,755 27.20 0.0427
2025-11-12 2025-09-30 13F MATTEL COM 577081102 9,517,597 401,469 4.40 160,184 -10.90 0.0344
2025-08-12 2025-06-30 13F MATTEL COM 577081102 9,116,128 1,026,291 12.69 179,776 14.38 0.0416
2025-05-13 2025-03-31 13F MATTEL COM 577081102 8,089,837 1,416,542 21.23 157,179 32.85 0.0391
2025-02-13 2024-12-31 13F MATTEL COM 577081102 6,673,295 453,390 7.29 118,318 -0.14 0.0284
2024-11-07 2024-09-30 13F MATTEL COM 577081102 6,219,905 425,767 7.35 118,488 25.76 0.0287
2024-08-09 2024-06-30 13F MATTEL COM 577081102 5,794,138 1,479,227 34.28 94,215 10.22 0.0246
2024-05-10 2024-03-31 13F MATTEL COM 577081102 4,314,911 275,340 6.82 85,478 12.07 0.0231
2024-02-07 2023-12-31 13F MATTEL COM 577081102 4,039,571 716,558 21.56 76,272 4.18 0.0223
2023-11-09 2023-09-30 13F MATTEL COM 577081102 3,323,013 -219,890 -6.21 73,210 5.76 0.0240
2023-08-09 2023-06-30 13F MATTEL COM 577081102 3,542,903 86,365 2.50 69,223 8.80 0.0221
2023-05-12 2023-03-31 13F MATTEL COM 577081102 3,456,538 148,374 4.49 63,624 107,737.29 0.0214
2023-02-09 2022-12-31 13F MATTEL COM 577081102 3,308,164 17,023 0.52 59 -99.91 0.0174
2022-11-10 2022-09-30 13F MATTEL COM 577081102 3,291,141 48,530 1.50 62,332 -13.92 0.0239
2022-08-12 2022-06-30 13F MATTEL COM 577081102 3,242,611 503,226 18.37 72,414 18.98 0.0260
2022-05-13 2022-03-31 13F MATTEL COM 577081102 2,739,385 -15,526 -0.56 60,860 2.47 0.0187
2022-02-09 2021-12-31 13F MATTEL COM 577081102 2,754,911 36,054 1.33 59,393 17.68 0.0180
2021-11-12 2021-09-30 13F MATTEL COM 577081102 2,718,857 86,436 3.28 50,471 -4.62 0.0163
2021-08-12 2021-06-30 13F MATTEL COM 577081102 2,632,421 -16,935 -0.64 52,914 0.26 0.0168
2021-05-14 2021-03-31 13F MATTEL COM 577081102 2,649,356 70,962 2.75 52,778 17.30 0.0175
2021-03-08 2020-12-31 13F/A-2 MATTEL COM 577081102 2,578,394 141,500 5.81 44,994 57.82 0.0162
2021-02-11 2020-12-31 13F MATTEL COM 577081102 2,578,394 141,500 44,994 16,249.4412
2020-11-12 2020-09-30 13F MATTEL COM 577081102 2,436,894 -281,343 -10.35 28,509 8.47 0.0121
2020-08-13 2020-06-30 13F MATTEL COM 577081102 2,718,237 486,454 21.80 26,284 33.66 0.0116
2020-05-14 2020-03-31 13F MATTEL COM 577081102 2,231,783 803,646 56.27 19,665 1.62 0.0102
2020-02-14 2019-12-31 13F MATTEL COM 577081102 1,428,137 124,436 9.54 19,352 30.33 0.0071
2019-11-12 2019-09-30 13F MATTEL COM 577081102 1,303,701 -221,179 -14.50 14,848 -13.13 0.0058
2019-08-13 2019-06-30 13F MATTEL COM 577081102 1,524,880 117,467 8.35 17,092 -6.59 0.0066
2019-08-12 2019-03-31 13F/A-2 MATTEL COM 577081102 1,407,413 64,759 4.82 18,297 36.41 0.0073
2019-05-10 2019-03-31 13F MATTEL COM 577081102 1,407,413 64,759 18,297
2019-02-26 2018-12-31 13F/A-1 MATTEL COM 577081102 1,342,654 -85,450 -5.98 13,413 -40.18 0.0061
2019-02-13 2018-12-31 13F MATTEL COM 577081102 1,342,654 -85,450 13,413
2018-11-13 2018-09-30 13F MATTEL COM 577081102 1,428,104 -99,389 -6.51 22,424 -10.59 0.0085
2018-08-10 2018-06-30 13F MATTEL COM 577081102 1,527,493 -84,765 -5.26 25,081 18.31 0.0100
2018-05-11 2018-03-31 13F MATTEL COM 577081102 1,612,258 115,267 7.70 21,200 -7.92 0.0088
2018-02-12 2017-12-31 13F MATTEL COM 577081102 1,496,991 -32,404 -2.12 23,024 -2.71 0.0095
2017-11-13 2017-09-30 13F MATTEL COM 577081102 1,529,395 101,022 7.07 23,666 -23.03 0.0103
2017-08-11 2017-06-30 13F MATTEL COM 577081102 1,428,373 82,627 6.14 30,748 -10.78 0.0142
2017-05-12 2017-03-31 13F MATTEL COM 577081102 1,345,746 11,301 0.85 34,463 -6.26 0.0165
2017-02-09 2016-12-31 13F MATTEL COM 577081102 1,334,445 -4,663 -0.35 36,765 -9.34 0.0184
2016-11-10 2016-09-30 13F MATTEL COM 577081102 1,339,108 -69,277 -4.92 40,552 -7.98 0.0219
2016-08-09 2016-06-30 13F MATTEL COM 577081102 1,408,385 49,224 3.62 44,067 -3.56 0.0254
2016-05-13 2016-03-31 13F MATTEL COM 577081102 1,359,161 14,604 1.09 45,695 25.08 0.0274
2016-02-10 2015-12-31 13F MATTEL COM 577081102 1,344,557 141,118 11.73 36,533 44.14 0.0228
2015-11-13 2015-09-30 13F MATTEL COM 577081102 1,203,439 307,377 34.30 25,346 10.09 0.0166
2015-08-14 2015-06-30 13F MATTEL COM 577081102 896,062 58,272 6.96 23,022 20.28 0.0141
2015-05-14 2015-03-31 13F MATTEL COM 577081102 837,790 1,581 0.19 19,141 -26.03 0.0121
2015-02-06 2014-12-31 13F MATTEL COM 577081102 836,209 100,275 13.63 25,876 14.72 0.0170
2014-11-13 2014-09-30 13F MATTEL COM 577081102 735,934 188,147 34.35 22,556 5.66 0.0160
2014-08-08 2014-06-30 13F MATTEL COM 577081102 547,787 8,685 1.61 21,348 -1.26 0.0148
2014-05-14 2014-03-31 13F MATTEL COM 577081102 539,102 7,044 1.32 21,621 -14.60 0.0162
2014-02-12 2013-12-31 13F MATTEL COM 577081102 532,058 -1,937 -0.36 25,316 13.26 0.0197
2013-11-13 2013-09-30 13F MATTEL COM 577081102 533,995 38,576 7.79 22,353 -0.41 0.0193
2013-08-15 2013-06-30 13F MATTEL COM 577081102 495,419 495,419 22,446 0.0211
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.