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Joel Greenblatt's MongoDB, Inc. (MDB) position

Yes: as of Q1 2026, Joel Greenblatt holds 2K shares of MDB worth $585K (0.0% of the disclosed portfolio). Last quarter the position was reduced by 22.5%. First disclosed Q2 2021.
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Current value
$585K
Shares held
2K
% of portfolio
0.0%
Est. average buy price (i)
$256.89
est. since Q3 2025
Quarter-end price
$244.77

Estimated trade prices

Average price in quarters with purchases
$247.50
Average prices in quarters with sales
  • Q1 2026: $334.73 (695 shares sold)
  • Q4 2025: $363.87 (2K shares sold)
  • Q1 2024: $408.58 (1K shares sold)
  • Q4 2023: $379.37 (8K shares sold)
  • Q3 2023: $379.62 (3K shares sold)
  • Q1 2023: $209.86 (6K shares sold)
  • Q2 2022: $312.62 (7K shares sold)
  • Q4 2021: $512.04 (7K shares sold)

MDB price vs Greenblatt's position

1Y 3Y 5Y MAX
Dates
$100$200$400$60020222023202420252026Added 2K shares (43.6%) · Q3 2021. Average closing price $402.78 · Price range $332.70–$514.062KsharespurchasedSold 7K shares (81.9%) · Q4 2021. Average closing price $512.04 · Price range $429.34–$585.037KsharessoldAdded 11K shares (738.4%) · Q1 2022. Average closing price $390.99 · Price range $279.98–$487.5611KsharespurchasedSold 7K shares (60.6%) · Q2 2022. Average closing price $312.62 · Price range $223.61–$458.607KsharessoldNew position of 16K shares · Q4 2022. Average closing price $177.99 · Price range $137.35–$210.6516KsharespurchasedSold 6K shares (39.0%) · Q1 2023. Average closing price $209.86 · Price range $169.82–$245.866KsharessoldAdded 2K shares (23.5%) · Q2 2023. Average closing price $291.65 · Price range $211.52–$410.992KsharespurchasedSold 3K shares (21.3%) · Q3 2023. Average closing price $379.62 · Price range $325.30–$431.213KsharessoldSold 8K shares (80.5%) · Q4 2023. Average closing price $379.37 · Price range $327.33–$435.238KsharessoldSold 1K shares (69.4%) · Q1 2024. Average closing price $408.58 · Price range $353.55–$500.901KsharessoldNew position of 1K shares · Q3 2024. Average closing price $259.78 · Price range $221.50–$296.691KsharespurchasedNew position of 20K shares · Q2 2025. Average closing price $184.86 · Price range $145.85–$225.3820KsharespurchasedSold 2K shares (42.9%) · Q4 2025. Average closing price $363.87 · Price range $313.81–$439.682KsharessoldSold 695 shares (22.5%) · Q1 2026. Average closing price $334.73 · Price range $235.21–$440.60695sharessold← Earlier —1 purchase
Average closing price · filing quarter
$334.73
Price range · filing quarter
$235.21 – $440.60
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −695 −$233K −22.5% 2K May 15, 2026
Q4 2025 Reduced −2K −$845K −42.9% 3K Feb 17, 2026
Q3 2025 First covered – – – 5K Nov 14, 2025
Q2 2025 New +20K +$3.8M – 20K Aug 14, 2025
Q3 2024 New +1K +$385K – 1K Nov 14, 2024
Q1 2024 Reduced −1K −$532K −69.4% 575 May 15, 2024
Q4 2023 Reduced −8K −$2.9M −80.5% 2K Feb 14, 2024
Q3 2023 Reduced −3K −$992K −21.3% 10K Nov 14, 2023
Q2 2023 Added +2K +$681K +23.5% 12K Aug 14, 2023
Q1 2023 Reduced −6K −$1.3M −39.0% 10K May 15, 2023
Q4 2022 New +16K +$2.9M – 16K Feb 14, 2023
Q2 2022 Reduced −7K −$2.3M −60.6% 5K Aug 15, 2022
Q1 2022 Added +11K +$4.2M +738.4% 12K May 16, 2022
Q4 2021 Reduced −7K −$3.4M −81.9% 1K Feb 14, 2022
Q3 2021 Added +2K +$992K +43.6% 8K Nov 15, 2021
Q2 2021 New +6K +$1.7M – 6K Aug 16, 2021
Data through Q1 2026 · filed May 15, 2026
16 grouped rows from 16 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 MDB?

Yes. As of Q1 2026, Joel Greenblatt disclosed 2K shares of MDB, worth $585K. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy MDB?

Joel Greenblatt first disclosed a MDB 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 MDB?

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

How many shares of MDB does Joel Greenblatt own?

Joel Greenblatt disclosed 2K shares of MDB 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 MDB?

Joel Greenblatt began building the MDB 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.