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Joel Greenblatt's InterDigital, Inc. (IDCC) position

Yes: as of Q1 2026, Joel Greenblatt holds 9K shares of IDCC worth $2.6M (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
$2.6M
Shares held
9K
% of portfolio
0.0%
Est. average buy price (i)
$301.60
Quarter-end price
$302.00

Estimated trade prices

Average price in quarters with purchases
$137.93
Average prices in quarters with sales
  • Q1 2026: $339.86 (17K shares sold)
  • Q3 2025: $271.85 (3K shares sold)
  • Q2 2025: $211.98 (8K shares sold)
  • Q4 2024: $174.85 (37K shares sold)
  • Q2 2024: $106.87 (16K shares sold)
  • Q1 2024: $105.70 (6K shares sold)
  • Q3 2023: $86.92 (17K shares sold)
  • Q4 2022: $48.77 (19K shares sold)

IDCC price vs Greenblatt's position

1Y 3Y 5Y MAX
Dates
$40$200$40020222023202420252026New position of 9K shares · Q4 2021. Average closing price $69.71 · Price range $65.96–$73.939KsharespurchasedAdded 7K shares (80.8%) · Q1 2022. Average closing price $66.45 · Price range $61.44–$73.477KsharespurchasedAdded 6K shares (40.3%) · Q2 2022. Average closing price $61.35 · Price range $56.42–$66.846KsharespurchasedAdded 9K shares (38.7%) · Q3 2022. Average closing price $53.92 · Price range $40.42–$63.769KsharespurchasedSold 19K shares (62.8%) · Q4 2022. Average closing price $48.77 · Price range $46.32–$50.7519KsharessoldAdded 9K shares (80.1%) · Q1 2023. Average closing price $69.61 · Price range $56.22–$74.619KsharespurchasedAdded 19K shares (90.9%) · Q2 2023. Average closing price $80.98 · Price range $67.03–$96.5519KsharespurchasedSold 17K shares (42.3%) · Q3 2023. Average closing price $86.92 · Price range $79.57–$98.3917KsharessoldAdded 13K shares (56.2%) · Q4 2023. Average closing price $92.54 · Price range $75.03–$111.3313KsharespurchasedSold 6K shares (16.0%) · Q1 2024. Average closing price $105.70 · Price range $102.48–$117.196KsharessoldSold 16K shares (51.7%) · Q2 2024. Average closing price $106.87 · Price range $95.66–$117.9616KsharessoldAdded 28K shares (196.7%) · Q3 2024. Average closing price $131.08 · Price range $116.28–$141.6328KsharespurchasedSold 37K shares (86.5%) · Q4 2024. Average closing price $174.85 · Price range $142.66–$200.5937KsharessoldAdded 13K shares (232.7%) · Q1 2025. Average closing price $201.31 · Price range $171.68–$225.7213KsharespurchasedSold 8K shares (44.1%) · Q2 2025. Average closing price $211.98 · Price range $183.37–$236.288KsharessoldSold 3K shares (30.0%) · Q3 2025. Average closing price $271.85 · Price range $221.60–$349.233KsharessoldAdded 18K shares (243.6%) · Q4 2025. Average closing price $353.55 · Price range $318.38–$396.5418KsharespurchasedSold 17K shares (66.8%) · Q1 2026. Average closing price $339.86 · Price range $294.70–$379.0217Ksharessold
Average closing price · filing quarter
$339.86
Price range · filing quarter
$294.70 – $379.02
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −17K −$5.9M −66.8% 9K May 15, 2026
Q4 2025 Added +18K +$6.5M +243.6% 26K Feb 17, 2026
Q3 2025 Reduced −3K −$876K −30.0% 8K Nov 14, 2025
Q2 2025 Reduced −8K −$1.8M −44.1% 11K Aug 14, 2025
Q1 2025 Added +13K +$2.7M +232.7% 19K May 15, 2025
Q4 2024 Reduced −37K −$6.5M −86.5% 6K Feb 14, 2025
Q3 2024 Added +28K +$3.7M +196.7% 43K Nov 14, 2024
Q2 2024 Reduced −16K −$1.7M −51.7% 14K Aug 14, 2024
Q1 2024 Reduced −6K −$605K −16.0% 30K May 15, 2024
Q4 2023 Added +13K +$1.2M +56.2% 36K Feb 14, 2024
Q3 2023 Reduced −17K −$1.5M −42.3% 23K Nov 14, 2023
Q2 2023 Added +19K +$1.5M +90.9% 40K Aug 14, 2023
Q1 2023 Added +9K +$643K +80.1% 21K May 15, 2023
Q4 2022 Reduced −19K −$947K −62.8% 12K Feb 14, 2023
Q3 2022 Added +9K +$466K +38.7% 31K Nov 14, 2022
Q2 2022 Added +6K +$393K +40.3% 22K Aug 15, 2022
Q1 2022 Added +7K +$472K +80.8% 16K May 16, 2022
Q4 2021 New +9K +$613K – 9K Feb 14, 2022
Q1 2021 First covered – – – 6K May 17, 2021
Data through Q1 2026 · filed May 15, 2026
19 grouped rows from 19 quarters

More Greenblatt positions

Apple Inc.(AAPL)
$727M
2.2% of portfolio

NVIDIA Corporation(NVDA)
$715M
2.2% of portfolio

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

Alphabet Inc.(GOOGL)
$155M
0.5% of portfolio

Snowflake Inc.(SNOW)
$150M
0.5% of portfolio

Common questions

Does Joel Greenblatt own IDCC?

Yes. As of Q1 2026, Joel Greenblatt disclosed 9K shares of IDCC, worth $2.6M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy IDCC?

Joel Greenblatt held IDCC 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 IDCC?

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

How many shares of IDCC does Joel Greenblatt own?

Joel Greenblatt disclosed 9K shares of IDCC 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 IDCC?

Joel Greenblatt's estimated average buy price for IDCC is $301.60, from quarter-average prices weighted by the shares added each quarter. 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.