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Joel Greenblatt's Onto Innovation Inc. (ONTO) position

Yes: as of Q1 2026, Joel Greenblatt holds 168K shares of ONTO worth $35M (0.1% of the disclosed portfolio). Last quarter the position was reduced by 16.0%. First disclosed Q2 2021.
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Current value
$35M
Shares held
168K
% of portfolio
0.1%
Est. average buy price (i)
$107.11
est. since Q2 2025
Quarter-end price
$205.07

Estimated trade prices

Average price in quarters with purchases
$114.81
Average prices in quarters with sales
  • Q1 2026: $204.79 (32K shares sold)
  • Q4 2025: $141.98 (910 shares sold)
  • Q1 2025: $168.38 (8K shares sold)
  • Q4 2024: $182.71 (10K shares sold)
  • Q4 2022: $71.84 (9K shares sold)
  • Q3 2022: $73.47 (14K shares sold)
  • Q3 2021: $72.11 (4K shares sold)

ONTO price vs Greenblatt's position

1Y 3Y 5Y MAX
Dates
$60$200$40020222023202420252026Sold 4K shares (48.9%) · Q3 2021. Average closing price $72.11 · Price range $63.69–$79.544KsharessoldAdded 9K shares (208.8%) · Q4 2021. Average closing price $86.29 · Price range $70.17–$102.279KsharespurchasedAdded 7K shares (47.3%) · Q1 2022. Average closing price $88.92 · Price range $73.98–$105.967KsharespurchasedAdded 6K shares (29.2%) · Q2 2022. Average closing price $74.00 · Price range $67.28–$84.846KsharespurchasedSold 14K shares (53.0%) · Q3 2022. Average closing price $73.47 · Price range $61.19–$89.4314KsharessoldSold 9K shares (69.9%) · Q4 2022. Average closing price $71.84 · Price range $59.04–$84.709KsharessoldNew position of 26K shares · Q3 2024. Average closing price $201.83 · Price range $158.45–$238.0426KsharespurchasedSold 10K shares (39.2%) · Q4 2024. Average closing price $182.71 · Price range $158.54–$224.9410KsharessoldSold 8K shares (50.7%) · Q1 2025. Average closing price $168.38 · Price range $121.34–$224.508KsharessoldAdded 155K shares (334.5%) · Q3 2025. Average closing price $107.19 · Price range $90.00–$136.73155KsharespurchasedSold 910 shares (0.5%) · Q4 2025. Average closing price $141.98 · Price range $121.34–$168.53910sharessoldSold 32K shares (16.0%) · Q1 2026. Average closing price $204.79 · Price range $165.87–$225.3332Ksharessold← Earlier —1 purchase
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 Reduced −32K −$6.6M −16.0% 168K May 15, 2026
Q4 2025 Reduced −910 −$129K −0.5% 200K Feb 17, 2026
Q3 2025 Added +155K +$17M +334.5% 201K Nov 14, 2025
Q2 2025 First covered – – – 46K Aug 14, 2025
Q1 2025 Reduced −8K −$1.4M −50.7% 8K May 15, 2025
Q4 2024 Reduced −10K −$1.9M −39.2% 16K Feb 14, 2025
Q3 2024 New +26K +$5.3M – 26K Nov 14, 2024
Q4 2022 Reduced −9K −$626K −69.9% 4K Feb 14, 2023
Q3 2022 Reduced −14K −$1.0M −53.0% 12K Nov 14, 2022
Q2 2022 Added +6K +$444K +29.2% 27K Aug 15, 2022
Q1 2022 Added +7K +$587K +47.3% 21K May 16, 2022
Q4 2021 Added +9K +$814K +208.8% 14K Feb 14, 2022
Q3 2021 Reduced −4K −$312K −48.9% 5K Nov 15, 2021
Q2 2021 New +9K +$608K – 9K Aug 16, 2021
Data through Q1 2026 · filed May 15, 2026
14 grouped rows from 14 quarters

More Greenblatt positions

Apple Inc.(AAPL)
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2.2% of portfolio

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$715M
2.2% of portfolio

Amazon.com, Inc.(AMZN)
$163M
0.5% of portfolio

Alphabet Inc.(GOOGL)
$155M
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Snowflake Inc.(SNOW)
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Common questions

Does Joel Greenblatt own ONTO?

Yes. As of Q1 2026, Joel Greenblatt disclosed 168K shares of ONTO, worth $35M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy ONTO?

Joel Greenblatt first disclosed a ONTO position in Q2 2021; 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 Joel Greenblatt sell ONTO?

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

How many shares of ONTO does Joel Greenblatt own?

Joel Greenblatt disclosed 168K shares of ONTO as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Joel Greenblatt pay for ONTO?

Joel Greenblatt began building the ONTO 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.