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Jeremy Grantham's Onto Innovation Inc. (ONTO) position

Yes: as of Q1 2026, Jeremy Grantham holds 136K shares of ONTO worth $28M (0.1% of the disclosed portfolio). Last quarter the position was opened. First disclosed Q1 2025.
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Current value
$28M
Shares held
136K
% of portfolio
0.1%
Est. average buy price (i)
$204.79
Quarter-end price
$205.07

Estimated trade prices

Average price in quarters with purchases
$180.18

ONTO price vs Grantham's position

1Y 3Y 5Y MAX
Dates
$60$200$40020222023202420252026New position of 285K shares · Q1 2025. Average closing price $168.38 · Price range $121.34–$224.50285KsharespurchasedNew position of 136K shares · Q1 2026. Average closing price $204.79 · Price range $165.87–$225.33136Ksharespurchased
Average closing price · filing quarter
$204.79
Price range · filing quarter
$165.87 – $225.33
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 New +136K +$28M – 136K May 14, 2026
Q1 2025 New +285K +$48M – 285K May 14, 2025
Data through Q1 2026 · filed May 14, 2026
2 grouped rows from 2 quarters

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Apple Inc.(AAPL)
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Meta Platforms, Inc.(META)
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Lam Research Corporation(LRCX)
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Common questions

Does Jeremy Grantham own ONTO?

Yes. As of Q1 2026, Jeremy Grantham disclosed 136K shares of ONTO, worth $28M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jeremy Grantham buy ONTO?

Jeremy Grantham first disclosed a ONTO position in Q1 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 ONTO?

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

How many shares of ONTO does Jeremy Grantham own?

Jeremy Grantham disclosed 136K shares of ONTO 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 ONTO?

Jeremy Grantham's estimated average buy price for ONTO is $204.79, from quarter-average prices weighted by the shares added each quarter. 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.