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Joel Greenblatt's Regeneron Pharmaceuticals, Inc. (REGN) position

Yes: as of Q1 2026, Joel Greenblatt holds 83K shares of REGN worth $64M (0.2% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$64M
Shares held
83K
% of portfolio
0.2%
Est. average buy price (i)
$625.40
est. since Q1 2021
Quarter-end price
$768.97

Estimated trade prices

Average price in quarters with purchases
$633.69
Average prices in quarters with sales
  • Q4 2025: $679.43 (4K shares sold)
  • Q2 2025: $558.13 (5K shares sold)
  • Q3 2024: $1,112.86 (73 shares sold)
  • Q4 2023: $823.50 (98 shares sold)
  • Q3 2023: $785.91 (7K shares sold)
  • Q1 2023: $754.21 (228 shares sold)
  • Q4 2022: $737.86 (1K shares sold)
  • Q3 2022: $629.39 (9K shares sold)
  • Q2 2022: $650.01 (870 shares sold)
  • Q1 2022: $632.65 (9K shares sold)

REGN price vs Greenblatt's position

1Y 3Y 5Y MAX
Dates
$400$1,000$1,500202420252026Sold 7K shares (67.0%) · Q3 2023. Average closing price $785.91 · Price range $692.45–$844.377KsharessoldSold 98 shares (3.0%) · Q4 2023. Average closing price $823.50 · Price range $775.18–$881.7098sharessoldAdded 206 shares (6.5%) · Q1 2024. Average closing price $950.88 · Price range $902.69–$993.35206sharespurchasedAdded 2K shares (69.9%) · Q2 2024. Average closing price $969.40 · Price range $883.20–$1,071.192KsharespurchasedSold 73 shares (1.3%) · Q3 2024. Average closing price $1,112.86 · Price range $1,024.09–$1,201.7673sharessoldAdded 6K shares (103.0%) · Q4 2024. Average closing price $839.22 · Price range $701.85–$1,046.916KsharespurchasedAdded 21K shares (180.5%) · Q1 2025. Average closing price $687.82 · Price range $634.14–$744.8321KsharespurchasedSold 5K shares (15.7%) · Q2 2025. Average closing price $558.13 · Price range $483.07–$625.605KsharessoldAdded 57K shares (211.9%) · Q3 2025. Average closing price $565.41 · Price range $534.91–$598.7157KsharespurchasedSold 4K shares (4.7%) · Q4 2025. Average closing price $679.43 · Price range $557.73–$787.324KsharessoldAdded 3K shares (3.2%) · Q1 2026. Average closing price $765.64 · Price range $733.04–$812.273Ksharespurchased← Earlier —4 purchases, 5 sells
Average closing price · filing quarter
$765.64
Price range · filing quarter
$733.04 – $812.27
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +3K +$2.0M +3.2% 83K May 15, 2026
Q4 2025 Reduced −4K −$2.7M −4.7% 80K Feb 17, 2026
Q3 2025 Added +57K +$32M +211.9% 84K Nov 14, 2025
Q2 2025 Reduced −5K −$2.8M −15.7% 27K Aug 14, 2025
Q1 2025 Added +21K +$14M +180.5% 32K May 15, 2025
Q4 2024 Added +6K +$4.9M +103.0% 11K Feb 14, 2025
Q3 2024 Reduced −73 −$81K −1.3% 6K Nov 14, 2024
Q2 2024 Added +2K +$2.3M +69.9% 6K Aug 14, 2024
Q1 2024 Added +206 +$196K +6.5% 3K May 15, 2024
Q4 2023 Reduced −98 −$81K −3.0% 3K Feb 14, 2024
Q3 2023 Reduced −7K −$5.2M −67.0% 3K Nov 14, 2023
Q2 2023 Added +6K +$4.5M +149.1% 10K Aug 14, 2023
Q1 2023 Reduced −228 −$172K −5.4% 4K May 15, 2023
Q4 2022 Reduced −1K −$1.0M −24.9% 4K Feb 14, 2023
Q3 2022 Reduced −9K −$5.5M −60.9% 6K Nov 14, 2022
Q2 2022 Reduced −870 −$566K −5.8% 14K Aug 15, 2022
Q1 2022 Reduced −9K −$5.4M −36.2% 15K May 16, 2022
Q4 2021 Added +18K +$11M +338.0% 24K Feb 14, 2022
Q3 2021 Added +2K +$1.2M +53.0% 5K Nov 15, 2021
Q2 2021 Added +267 +$135K +8.2% 4K Aug 16, 2021
Q1 2021 First covered – – – 3K May 17, 2021
Data through Q1 2026 · filed May 15, 2026
21 grouped rows from 21 quarters

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Common questions

Does Joel Greenblatt own REGN?

Yes. As of Q1 2026, Joel Greenblatt disclosed 83K shares of REGN, worth $64M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy REGN?

Joel Greenblatt held REGN since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Joel Greenblatt sell REGN?

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

How many shares of REGN does Joel Greenblatt own?

Joel Greenblatt disclosed 83K shares of REGN 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 REGN?

Joel Greenblatt began building the REGN 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.