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MAT · Mattel Inc /De/

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Market Cap
$4.08B
Shares
285.70M

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: 407
Total Value: $4,285,449,387
Total Shares: 308,749,974
Showing 1–100 of 422 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 407 13F filers · Δ vs Mar 31, 2026
Top Holder
16.5%
Sep 2023 → Jun 2026 · range 11.1% – 16.5%
+0.3 pts
Top 5
43.8%
Sep 2023 → Jun 2026 · range 43.8% – 50.1%
−0.3 pts
Top 10
61.6%
Sep 2023 → Jun 2026 · range 60.1% – 66.5%
−0.2 pts
HHI
576
Sep 2023 → Jun 2026 · range 527 – 624
Broadly held−5

Quarterly Activity

vs Mar 31, 2026
New
49
Increased
103
Decreased
171
Sold Out
75
Unchanged
84
Holder count: -26
Institutional value: -2.4%
Shares held: +2.1%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 422
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 63276 CUSIP 577081102 13F (30d) 273 filings 268 filers Visit website Investor relations