Mattel, Inc.
US ˙ NasdaqGS ˙ US5770811025

SecurityMAT / Mattel, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership3,547,424 shares
Latest Disclosed Value $ 51,544,079
Morgan Stanley reports 33.70% decrease in ownership of MAT / Mattel, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 3,547,424 shares of Mattel, Inc. (US:MAT) valued at $51,544,071 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 5,350,290 shares of Mattel, Inc.. This represents a change in shares of -33.70% during the quarter. The current value of the position is $50,870,060 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)
2026-05-15 2026-03-31 13F MATTEL COM 577081102 3,547,424 -1,802,866 -33.70 51,544 -51.44 0.0031
2026-05-27 2025-12-31 13F/A-1 MATTEL COM 577081102 5,350,290 703,806 15.15 106,150 35.74 0.0063
2026-02-13 2025-12-31 13F MATTEL COM 577081102 5,350,290 703,806 106,150 0.0063
2026-05-27 2025-09-30 13F/A-1 MATTEL COM 577081102 4,646,484 -144,972 -3.03 78,200 -17.24 0.0047
2025-11-14 2025-09-30 13F MATTEL COM 577081102 4,646,484 -144,972 78,200 0.0047
2025-08-15 2025-06-30 13F MATTEL COM 577081102 4,791,456 2,124,429 79.66 94,488 82.34 0.0062
2025-05-15 2025-03-31 13F MATTEL COM 577081102 2,667,027 494,655 22.77 51,820 34.54 0.0037
2025-05-15 2024-12-31 13F/A-1 MATTEL COM 577081102 2,172,372 513,663 30.97 38,516 21.89 0.0027
2025-02-14 2024-12-31 13F MATTEL COM 577081102 2,172,372 513,663 38,516 0.0027
2025-05-14 2024-09-30 13F/A-2 MATTEL COM 577081102 1,658,709 -7,795 -0.47 31,598 16.61 0.0023
2025-02-14 2024-09-30 13F/A-1 MATTEL COM 577081102 1,658,709 -7,795 31,598 0.0023
2024-11-14 2024-09-30 13F MATTEL COM 577081102 1,658,709 -7,795 31,598 0.0003
2025-05-14 2024-06-30 13F/A-2 MATTEL COM 577081102 1,666,504 -857,625 -33.98 27,097 -45.81 0.0021
2024-10-17 2024-06-30 13F/A-1 MATTEL COM 577081102 1,666,504 -857,625 27,097 0.0021
2024-08-14 2024-06-30 13F MATTEL COM 577081102 1,666,504 -857,625 27,097 0.0021
2024-10-17 2024-03-31 13F/A-2 MATTEL COM 577081102 2,524,129 944,189 59.76 50,003 67.63 0.0040
2024-08-16 2024-03-31 13F/A-1 MATTEL COM 577081102 2,524,129 944,189 50,003 0.0005
2024-05-15 2024-03-31 13F MATTEL COM 577081102 2,524,129 944,189 50,003 0.0040
2024-08-16 2023-12-31 13F/A-1 MATTEL COM 577081102 1,579,940 -123,126 -7.23 29,829 -20.49 0.0026
2024-02-13 2023-12-31 13F MATTEL COM 577081102 1,579,940 -123,126 29,829 0.0026
2023-11-15 2023-09-30 13F MATTEL COM 577081102 1,703,066 493,494 40.80 37,519 58.74 0.0038
2023-08-14 2023-06-30 13F MATTEL COM 577081102 1,209,572 -577,838 -32.33 23,635 -28.17 0.0023
2023-05-15 2023-03-31 13F MATTEL COM 577081102 1,787,410 320,165 21.82 32,906 25.72 0.0035
2023-02-14 2022-12-31 13F MATTEL COM 577081102 1,467,245 264,868 22.03 26,176 14.94 0.0030
2022-11-14 2022-09-30 13F MATTEL COM 577081102 1,202,377 17,722 1.50 22,773 -13.91 0.0031
2022-10-27 2022-06-30 13F/A-1 MATTEL COM 577081102 1,184,655 -38,496 -3.15 26,453 -2.62 0.0034
2022-08-15 2022-06-30 13F MATTEL COM 577081102 1,184,655 -38,496 26,453 0.0007
2022-10-27 2022-03-31 13F/A-1 MATTEL COM 577081102 1,223,151 30,160 2.53 27,166 5.62 0.0037
2022-05-13 2022-03-31 13F MATTEL COM 577081102 1,223,151 30,160 27,166 0.0037
2022-02-14 2021-12-31 13F MATTEL COM 577081102 1,192,991 -177,164 -12.93 25,720 1.14 0.0032
2021-11-15 2021-09-30 13F MATTEL COM 577081102 1,370,155 124,129 9.96 25,430 1.54 0.0034
2021-08-23 2021-06-30 13F/A-1 MATTEL COM 577081102 1,246,026 355,724 39.96 25,045 41.22 0.0033
2021-08-16 2021-06-30 13F MATTEL COM 577081102 1,246,026 355,724 25,045 0.0007
2021-05-17 2021-03-31 13F MATTEL COM 577081102 890,302 117,101 15.14 17,735 31.44 0.0026
2021-02-16 2020-12-31 13F MATTEL COM 577081102 773,201 167,769 27.71 13,493 90.50 0.0021
2020-11-13 2020-09-30 13F MATTEL COM 577081102 605,432 -76,157 -11.17 7,083 7.46 0.0014
2020-08-14 2020-06-30 13F MATTEL COM 577081102 681,589 -975,109 -58.86 6,591 -54.84 0.0015
2020-05-26 2020-03-31 13F/A-1 MATTEL COM 577081102 1,656,698 813,716 96.53 14,596 27.79 0.0040
2020-05-15 2020-03-31 13F MATTEL COM 577081102 1,656,698 813,716 14,596 1,121.2771
2020-02-14 2019-12-31 13F MATTEL COM 577081102 842,982 185,972 28.31 11,422 52.64 0.0027
2019-11-14 2019-09-30 13F MATTEL COM 577081102 657,010 -27,247 -3.98 7,483 -2.44 0.0020
2019-08-14 2019-06-30 13F MATTEL COM 577081102 684,257 -101,403 -12.91 7,670 -24.90 0.0020
2019-05-15 2019-03-31 13F MATTEL COM 577081102 785,660 -823,516 -51.18 10,213 -36.47 0.0029
2019-02-14 2018-12-31 13F MATTEL COM 577081102 1,609,176 779,574 93.97 16,076 23.41 0.0048
2019-04-23 2018-09-30 13F/A-2 MATTEL COM 577081102 829,602 18,933 2.34 13,026 -2.15 0.0033
2018-11-20 2018-09-30 13F/A-1 MATTEL COM 577081102 829,602 0 13,026 0.0033
2018-11-14 2018-09-30 13F MATTEL COM 577081102 829,602 18,933 13,026
2019-04-23 2018-06-30 13F/A-1 MATTEL COM 577081102 810,669 -253,902 -23.85 13,312 -4.91 0.0036
2018-08-14 2018-06-30 13F MATTEL COM 577081102 810,669 -253,902 13,312
2019-04-23 2018-03-31 13F/A-1 MATTEL COM 577081102 1,064,571 -4,275 -0.40 14,000 -14.84 0.0039
2018-05-14 2018-03-31 13F MATTEL COM 577081102 1,064,571 -4,275 14,000
2019-04-23 2017-12-31 13F/A-1 MATTEL COM 577081102 1,068,846 -502,482 -31.98 16,439 -32.42 0.0045
2018-02-14 2017-12-31 13F MATTEL COM 577081102 1,068,846 -502,482 16,439
2017-11-14 2017-09-30 13F MATTEL COM 577081102 1,571,328 60,822 4.03 24,325 -25.20 0.0073
2017-08-11 2017-06-30 13F MATTEL COM 577081102 1,510,506 -3,000,708 -66.52 32,521 -71.85 0.0098
2017-05-22 2017-03-31 13F/A-1 MATTEL COM 577081102 4,511,214 1,036,583 29.83 115,532 20.69 0.0355
2017-05-12 2017-03-31 13F MATTEL COM 577081102 4,511,214 115,532
2017-02-22 2016-12-31 13F/A-1 MATTEL COM 577081102 3,474,631 1,419,552 69.08 95,726 53.84 0.0313
2017-02-13 2016-12-31 13F MATTEL COM 577081102 3,474,631 95,726
2016-11-10 2016-09-30 13F MATTEL COM 577081102 2,055,079 901,119 78.09 62,226 72.35 0.0213
2016-08-12 2016-06-30 13F MATTEL COM 577081102 1,153,960 220,588 23.63 36,105 15.06 0.0130
2016-05-12 2016-03-31 13F MATTEL COM 577081102 933,372 -453,960 -32.72 31,379 -16.75 0.0121
2016-02-09 2015-12-31 13F MATTEL COM 577081102 1,387,332 -81,977 -5.58 37,693 21.81 0.0136
2016-02-08 2015-09-30 13F/A-1 MATTEL COM 577081102 1,469,309 39,372 2.75 30,943 -15.76 0.0114
2015-11-09 2015-09-30 13F MATTEL COM 577081102 1,469,309 30,943
2015-08-12 2015-06-30 13F MATTEL COM 577081102 1,429,937 -1,786,553 -55.54 36,734 -50.02 0.0127
2015-05-14 2015-03-31 13F MATTEL COM 577081102 3,216,490 2,157,813 203.82 73,496 124.34 0.0271
2015-02-13 2014-12-31 13F MATTEL COM 577081102 1,058,677 -743,242 -41.25 32,761 -40.68 0.0120
2014-12-16 2014-09-30 13F/A-1 MATTEL COM 577081102 1,801,919 681,132 60.77 55,229 22.85 0.0212
2014-11-14 2014-09-30 13F MATTEL COM 577081102 1,801,919 55,229
2014-05-13 2014-03-31 13F MATTEL COM 577081102 1,120,787 231,217 25.99 44,955 6.21 0.0188
2014-02-13 2013-12-31 13F MATTEL COM 577081102 889,570 -381,197 -30.00 42,325 -20.47 0.0180
2013-11-13 2013-09-30 13F MATTEL INC COM ST COM 577081102 1,270,767 217,815 20.69 53,219 11.55 0.0252
2013-08-08 2013-06-30 13F MATTEL INC COM ST COM 577081102 1,052,952 1,052,952 47,708 0.0241
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.