Mattel, Inc.
MX ˙ BMV ˙ US5770811025
SecurityMX:MAT / Mattel, Inc.
InstitutionInvestors Research Corp
Latest Disclosed Ownership10,000 shares
Latest Disclosed Value $ 145,300
Investors Research Corp reports 67.31% decrease in ownership of MAT / Mattel, Inc.

On April 3, 2026 - Investors Research Corp filed a 13F-HR form disclosing ownership of 10,000 shares of Mattel, Inc. (MX:MAT) valued at $145,300 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 6, 2026 disclosing 30,592 shares of Mattel, Inc.. This represents a change in shares of -67.31% during the quarter.

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)
2026-04-03 2026-03-31 13F MATTEL COM 577081102 10,000 -20,592 -67.31 145 -76.07 0.0268
2026-01-06 2025-12-31 13F MATTEL COM 577081102 30,592 -650 -2.08 607 15.43 0.1111
2025-10-02 2025-09-30 13F MATTEL COM 577081102 31,242 0 0.00 526 -14.77 0.0973
2025-07-07 2025-06-30 13F MATTEL COM 577081102 31,242 0 0.00 616 1.48 0.1208
2025-04-08 2025-03-31 13F MATTEL COM 577081102 31,242 -260 -0.83 607 8.78 0.1315
2025-02-07 2024-12-31 13F MATTEL COM 577081102 31,502 -300 -0.94 559 -7.77 0.1227
2024-11-12 2024-09-30 13F MATTEL COM 577081102 31,802 0 0.00 606 17.02 0.1324
2024-07-31 2024-06-30 13F MATTEL COM 577081102 31,802 -300 -0.93 517 -18.58 0.1208
2024-05-06 2024-03-31 13F MATTEL COM 577081102 32,102 -150 -0.47 636 4.44 0.1487
2024-01-30 2023-12-31 13F MATTEL COM 577081102 32,252 -2,050 -5.98 609 -19.47 0.1470
2023-11-01 2023-09-30 13F MATTEL COM 577081102 34,302 400 1.18 756 14.05 0.1973
2023-08-14 2023-06-30 13F MATTEL COM 577081102 33,902 0 0.00 662 6.09 0.1672
2023-05-11 2023-03-31 13F MATTEL COM 577081102 33,902 -1,000 -2.87 624 0.32 0.1621
2023-02-06 2022-12-31 13F MATTEL COM 577081102 34,902 -440 -1.24 623 -7.03 0.1685
2022-11-10 2022-09-30 13F MATTEL COM 577081102 35,342 0 0.00 669 -15.21 0.2049
2022-07-21 2022-06-30 13F MATTEL COM 577081102 35,342 -401 -1.12 789 -0.63 0.2372
2022-04-13 2022-03-31 13F MATTEL COM 577081102 35,743 225 0.63 794 3.66 0.2242
2022-01-27 2021-12-31 13F MATTEL COM 577081102 35,518 -174 -0.49 766 15.71 0.2319
2021-10-27 2021-09-30 13F MATTEL COM 577081102 35,692 0 0.00 662 -7.67 0.2235
2021-07-29 2021-06-30 13F MATTEL COM 577081102 35,692 0 0.00 717 0.84 0.2481
2021-04-28 2021-03-31 13F MATTEL COM 577081102 35,692 -400 -1.11 711 12.86 0.2678
2021-01-21 2020-12-31 13F MATTEL COM 577081102 36,092 -2,000 -5.25 630 41.26 0.2479
2020-10-20 2020-09-30 13F MATTEL COM 577081102 38,092 -600 -1.55 446 19.25 0.2164
2020-07-21 2020-06-30 13F MATTEL COM 577081102 38,692 -600 -1.53 374 8.09 0.1877
2020-05-05 2020-03-31 13F MATTEL COM 577081102 39,292 -1,250 -3.08 346 -36.98 0.2159
2020-02-11 2019-12-31 13F MATTEL COM 577081102 40,542 -600 -1.46 549 17.06 0.2532
2019-10-22 2019-09-30 13F MATTEL COM 577081102 41,142 -100 -0.24 469 1.52 0.2379
2019-07-08 2019-06-30 13F MATTEL COM 577081102 41,242 100 0.24 462 -13.64 0.2413
2019-04-23 2019-03-31 13F MATTEL COM 577081102 41,142 0 0.00 535 30.17 0.2853
2019-02-04 2018-12-31 13F MATTEL COM 577081102 41,142 -1,200 -2.83 411 -38.20 0.2870
2018-11-14 2018-09-30 13F MATTEL COM 577081102 42,342 -1,100 -2.53 665 -6.73 0.3802
2018-08-10 2018-06-30 13F MATTEL COM 577081102 43,442 42 0.10 713 24.87 0.4136
2018-05-09 2018-03-31 13F MATTEL COM 577081102 43,400 -700 -1.59 571 -15.78 0.3473
2018-02-13 2017-12-31 13F MATTEL COM 577081102 44,100 44,100 678 0.4193
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.