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Joel Greenblatt's Arrowhead Pharmaceuticals, Inc. (ARWR) position

Yes: as of Q1 2026, Joel Greenblatt holds 38K shares of ARWR worth an amount we cannot price (0.0% 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
an amount we cannot price
Shares held
38K
% of portfolio
0.0%
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.

ARWR price vs Greenblatt's position

Dates
$70$75$80$85$90← Earlier —5 purchases, 5 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 Reduced −18K −32.2% 38K May 15, 2026
Q4 2025 Added +24K +76.6% 56K Feb 17, 2026
Q3 2025 Added +13K +68.9% 32K Nov 14, 2025
Q2 2025 New +19K 19K Aug 14, 2025
Q2 2023 New +6K 6K Aug 14, 2023
Q4 2022 Reduced −11K −43.5% 14K Feb 14, 2023
Q3 2022 Reduced −91 −0.4% 25K Nov 14, 2022
Q2 2022 Added +12K +100.3% 25K Aug 15, 2022
Q1 2022 Reduced −89 −0.7% 12K May 16, 2022
Q4 2021 Unchanged 12K Feb 14, 2022
Q3 2021 Reduced −15 −0.1% 12K Nov 15, 2021
Q2 2021 Unchanged 12K Aug 16, 2021
Q1 2021 First covered 12K 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 ARWR?

Yes. As of Q1 2026, Joel Greenblatt disclosed 38K shares of ARWR, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy ARWR?

Joel Greenblatt held ARWR 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 ARWR?

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

How many shares of ARWR does Joel Greenblatt own?

Joel Greenblatt disclosed 38K shares of ARWR 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 ARWR?

Joel Greenblatt began building the ARWR 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.