Mattel, Inc.
US ˙ NasdaqGS ˙ US5770811025

SecurityMAT / Mattel, Inc.
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership1,159,230 shares
Latest Disclosed Value $ 16,843,612
Qube Research & Technologies Ltd reports 11.38% decrease in ownership of MAT / Mattel, Inc.

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 1,159,230 shares of Mattel, Inc. (US:MAT) valued at $16,843,612 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,308,055 shares of Mattel, Inc.. This represents a change in shares of -11.38% during the quarter. The current value of the position is $16,623,358 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 1,159,230 -148,825 -11.38 16,844 -35.10 0.0187
2026-02-17 2025-12-31 13F MATTEL COM 577081102 1,308,055 483,102 58.56 25,952 86.93 0.0264
2025-11-14 2025-09-30 13F MATTEL COM 577081102 824,953 588,985 249.60 13,884 198.37 0.0143
2025-08-14 2025-06-30 13F MATTEL COM 577081102 235,968 -1,761,090 -88.18 4,653 -88.01 0.0047
2025-05-15 2025-03-31 13F MATTEL COM 577081102 1,997,058 512,237 34.50 38,803 47.40 0.0450
2025-02-14 2024-12-31 13F MATTEL COM 577081102 1,484,821 453,448 43.97 26,326 33.99 0.0345
2024-11-14 2024-09-30 13F MATTEL COM 577081102 1,031,373 -2,017,906 -66.18 19,648 -60.37 0.0290
2024-08-14 2024-06-30 13F MATTEL COM 577081102 3,049,279 -117,783 -3.72 49,581 -20.97 0.0784
2024-05-14 2024-03-31 13F MATTEL COM 577081102 3,167,062 1,758,511 124.85 62,739 135.92 0.0995
2024-02-13 2023-12-31 13F MATTEL COM 577081102 1,408,551 1,408,551 26,593 0.0518
2023-05-15 2023-03-31 13F MATTEL COM 577081102 0 -295,498 -100.00 0 -100.00
2023-02-14 2022-12-31 13F MATTEL COM 577081102 295,498 -733,933 -71.30 5,272 -72.97 0.0282
2022-11-14 2022-09-30 13F MATTEL COM 577081102 1,029,431 1,029,431 19,497 0.1161
2022-08-15 2022-06-30 13F MATTEL COM 577081102 0 -488,071 -100.00 0 -100.00
2022-05-09 2022-03-31 13F MATTEL COM 577081102 488,071 488,071 10,840 0.0918
2022-02-10 2021-12-31 13F/A-1 MATTEL COM 577081102 0 -102,626 -100.00 0 -100.00
2022-02-01 2021-12-31 13F MATTEL COM 577081102 0 -102,626 0
2021-11-12 2021-09-30 13F MATTEL COM 577081102 102,626 102,626 1,905 0.0239
2021-08-13 2021-06-30 13F MATTEL COM 577081102 0 -209,670 -100.00 0 -100.00
2021-05-14 2021-03-31 13F MATTEL COM 577081102 209,670 209,670 4,177 0.0662
2019-08-02 2019-06-30 13F MATTEL COM 577081102 0 -16,727 -100.00 0 -100.00
2019-05-15 2019-03-31 13F MATTEL COM 577081102 16,727 16,727 217 0.0287
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.