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Jeremy Grantham's Mattel, Inc. (MAT) position

Yes: as of Q1 2026, Jeremy Grantham holds 233K shares of MAT worth $3.4M (0.0% of the disclosed portfolio). Last quarter the position was unchanged. First disclosed Q2 2025.
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Current value
$3.4M
Shares held
233K
% of portfolio
0.0%
Est. average buy price (i)
$18.22
est. since Q1 2026
Quarter-end price
$14.53

Estimated trade prices

Average price in quarters with purchases
$18.79

MAT price vs Grantham's position

1Y 3Y 5Y MAX
Dates
$10$15$20$25$3020222023202420252026New position of 20K shares · Q2 2025. Average closing price $17.80 · Price range $14.55–$20.1220KsharespurchasedAdded 40K shares (196.2%) · Q3 2025. Average closing price $18.23 · Price range $16.66–$20.5540KsharespurchasedAdded 80K shares (133.6%) · Q4 2025. Average closing price $19.32 · Price range $17.10–$21.2480Ksharespurchased
Average closing price · filing quarter
$19.32
Price range · filing quarter
$17.10 – $21.24
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 First covered – – – 233K May 14, 2026
Q4 2025 Added +80K +$1.6M +133.6% 140K Feb 17, 2026
Q3 2025 Added +40K +$725K +196.2% 60K Nov 13, 2025
Q2 2025 New +20K +$361K – 20K Aug 13, 2025
Data through Q1 2026 · filed May 14, 2026
4 grouped rows from 4 quarters

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Common questions

Does Jeremy Grantham own MAT?

Yes. As of Q1 2026, Jeremy Grantham disclosed 233K shares of MAT, worth $3.4M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jeremy Grantham buy MAT?

Jeremy Grantham first disclosed a MAT position in Q2 2025; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jeremy Grantham sell MAT?

The quarter-by-quarter table above shows each sale and reduction Jeremy Grantham disclosed in MAT. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of MAT does Jeremy Grantham own?

Jeremy Grantham disclosed 233K shares of MAT as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jeremy Grantham pay for MAT?

Jeremy Grantham began building the MAT position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.