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Joel Greenblatt's PTC Therapeutics, Inc. (PTCT) position

Not anymore: Joel Greenblatt fully exited PTCT in Q1 2026. The position peaked at an amount we cannot price in Q1 2021.
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Value at exit
an amount we cannot price
Shares at exit
16K
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

PTCT price vs Greenblatt's position

Dates
$75$80$85$90← Earlier —6 purchases, 4 sells
Average closing price · filing quarter
Price range · filing quarter

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Exited −16K −100.0% 0 May 15, 2026
Q4 2025 Reduced −2K −10.0% 16K Feb 17, 2026
Q3 2025 Reduced −18K −49.3% 18K Nov 14, 2025
Q2 2025 Added +31K +642.3% 36K Aug 14, 2025
Q1 2025 New +5K 5K May 15, 2025
Q1 2024 New +8K 8K May 15, 2024
Q2 2023 Reduced −6K −44.9% 7K Aug 14, 2023
Q1 2023 Added +6K +81.0% 12K May 15, 2023
Q4 2022 Reduced −250 −3.5% 7K Feb 14, 2023
Q3 2022 Added +456 +6.9% 7K Nov 14, 2022
Q2 2022 New +7K 7K Aug 15, 2022
Q2 2021 Unchanged 5K Aug 16, 2021
Q1 2021 First covered 5K May 17, 2021
Data through Q1 2026 · filed May 15, 2026
13 grouped rows from 13 quarters

More Greenblatt positions

Common questions

Does Joel Greenblatt own PTCT?

Not currently. Joel Greenblatt fully exited PTCT in Q1 2026, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy PTCT?

Joel Greenblatt held PTCT 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 PTCT?

Yes. Joel Greenblatt reduced and then fully exited PTCT by Q1 2026; the reductions are in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of PTCT does Joel Greenblatt own?

None as of the latest filing: Joel Greenblatt has exited PTCT. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Joel Greenblatt pay for PTCT?

Joel Greenblatt began building the PTCT 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.