Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MAT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | EdgePoint Investment Group Inc. | 49.1M | $714.0M | +3.8% | 16.261% | 5.72% |
| 2 | PRIMECAP MANAGEMENT CO/CA/ | 29.7M | $431.5M | -0.4% | 9.827% | 0.34% |
| 3 | BlackRock, Inc. | 27.3M | $397.0M | +1.8% | 9.041% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 13.7M | $198.4M | — | 4.519% | 0.00% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 13.6M | $198.0M | — | 4.508% | 0.01% |
| 6 | ARIEL INVESTMENTS, LLC | 13.6M | $197.1M | +8.3% | 4.489% | 2.21% |
| 7 | SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | 12.8M | $186.2M | +49.5% | 4.240% | 9.16% |
| 8 | DIMENSIONAL FUND ADVISORS LP | 11.1M | $160.6M | +7.6% | 3.658% | 0.03% |
| 9 | STATE STREET CORP | 9.7M | $141.2M | +1.1% | 3.216% | 0.00% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 6.2M | $89.7M | +3.0% | 2.043% | 0.01% |
| 11 | Alyeska Investment Group, L.P. | 4.6M | $67.0M | +33.8% | 1.525% | 0.19% |
| 12 | AQR CAPITAL MANAGEMENT LLC | 4.6M | $66.6M | +12.6% | 1.528% | 0.03% |
| 13 | MILLENNIUM MANAGEMENT LLC | 4.3M | $62.5M | +92.5% | 1.423% | 0.04% |
| 14 | D. E. Shaw & Co., Inc. | 3.9M | $56.4M | +57.2% | 1.285% | 0.05% |
| 15 | MARSHALL WACE, LLP | 3.7M | $54.1M | +27311.4% | 1.233% | 0.06% |
| 16 | MORGAN STANLEY | 3.5M | $51.5M | -33.7% | 1.174% | 0.00% |
| 17 | GOLDMAN SACHS GROUP INC | 3.5M | $51.5M | +37.8% | 1.173% | 0.01% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.4M | $49.0M | +3.6% | 1.116% | 0.01% |
| 19 | NORTHERN TRUST CORP | 2.8M | $40.6M | +1.8% | 0.925% | 0.01% |
| 20 | VICTORY CAPITAL MANAGEMENT INC | 2.6M | $37.6M | +34.7% | 0.857% | 0.02% |
| 21 | Squarepoint Ops LLC | 2.4M | $34.4M | -35.3% | 0.784% | 0.04% |
| 22 | UBS Group AG | 2.3M | $33.8M | +34.2% | 0.769% | 0.01% |
| 23 | Point72 Asset Management, L.P. | 2.2M | $32.3M | -48.8% | 0.735% | 0.05% |
| 24 | SEI INVESTMENTS CO | 2.2M | $31.4M | +107.3% | 0.715% | 0.03% |
| 25 | SERENITY CAPITAL MANAGEMENT PTE. LTD. | 2.0M | $29.1M | -16.1% | 0.662% | 7.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MAT — a direct measure of their conviction.
Filings activity in MAT during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 423 | 3.2% | 94.04% | 39.89 pp | $4.16B | 30% |
| Q4 2025 | 437 | +3.3% | 133.93% | +23.50 pp | $5.93B | +21% |
| Q3 2025 | 423 | 0.7% | 110.43% | 23.57 pp | $4.89B | 18% |
| Q2 2025 | 426 | 2.5% | 134.00% | 65.99 pp | $5.93B | 78% |
| Q1 2025 | 437 | +7.4% | 199.99% | +75.70 pp | $26.43B | +380% |
| Q4 2024 | 407 | +11% | 124.29% | 5.59 pp | $5.50B | 4.3% |
| Q3 2024 | 368 | 3.7% | 129.88% | +11.86 pp | $5.75B | +10% |
| Q2 2024 | 382 | — | 118.02% | — | $5.23B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MAT stock.
Based on Q1 2026 13F filings, institutional ownership of Mattel, Inc. stands at 94.0%, held across 423 reporting institutions.
EdgePoint Investment Group Inc. is the largest reported institutional holder of MAT, with approximately 49,140,882 shares worth $0.71B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of MAT, including MILLENNIUM MANAGEMENT LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for MAT is 40 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
75 institutions opened new positions in MAT during Q1 2026, while 89 fully exited. 58 added to existing positions and 287 trimmed.
MAT institutional ownership fell by 39.89 percentage points quarter-over-quarter, with a net change of -14 holders.
The top 10 institutions account for 65.2% of all reported 13F value in MAT, and the top 25 account for 81.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Mattel, Inc. (MAT) Institutional Ownership