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Joel Greenblatt's Innospec Inc. (IOSP) position

Yes: as of Q1 2026, Joel Greenblatt holds 8K shares of IOSP worth $560K (0.0% of the disclosed portfolio). Last quarter the position was opened. First disclosed Q2 2021.
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Current value
$560K
Shares held
8K
% of portfolio
0.0%
Est. average buy price (i)
$77.87
Quarter-end price
$73.02

Estimated trade prices

Average price in quarters with purchases
$99.96
Average prices in quarters with sales
  • Q1 2025: $105.80 (67 shares sold)
  • Q3 2024: $116.41 (6K shares sold)
  • Q1 2024: $121.44 (2K shares sold)
  • Q4 2023: $106.43 (2K shares sold)
  • Q3 2021: $89.17 (2K shares sold)

IOSP price vs Greenblatt's position

1Y 3Y 5Y MAX
Dates
$50$100$15020222023202420252026Sold 2K shares (33.6%) · Q3 2021. Average closing price $89.17 · Price range $82.36–$95.692KsharessoldNew position of 2K shares · Q1 2022. Average closing price $94.69 · Price range $89.67–$99.682KsharespurchasedNew position of 4K shares · Q1 2023. Average closing price $107.62 · Price range $99.19–$115.314KsharespurchasedAdded 5K shares (130.5%) · Q2 2023. Average closing price $100.14 · Price range $92.36–$107.195KsharespurchasedAdded 2K shares (19.0%) · Q3 2023. Average closing price $104.49 · Price range $98.35–$109.902KsharespurchasedSold 2K shares (23.3%) · Q4 2023. Average closing price $106.43 · Price range $96.36–$125.142KsharessoldSold 2K shares (20.9%) · Q1 2024. Average closing price $121.44 · Price range $114.80–$129.552KsharessoldAdded 6K shares (95.0%) · Q2 2024. Average closing price $125.17 · Price range $120.00–$131.586KsharespurchasedSold 6K shares (54.4%) · Q3 2024. Average closing price $116.41 · Price range $104.80–$131.406KsharessoldAdded 252 shares (4.6%) · Q4 2024. Average closing price $114.45 · Price range $107.78–$124.90252sharespurchasedSold 67 shares (1.2%) · Q1 2025. Average closing price $105.80 · Price range $94.75–$116.6167sharessoldNew position of 8K shares · Q1 2026. Average closing price $77.87 · Price range $65.89–$88.428Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$77.87
Price range · filing quarter
$65.89 – $88.42
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 New +8K +$598K – 8K May 15, 2026
Q1 2025 Reduced −67 −$7K −1.2% 6K May 15, 2025
Q4 2024 Added +252 +$29K +4.6% 6K Feb 14, 2025
Q3 2024 Reduced −6K −$754K −54.4% 5K Nov 14, 2024
Q2 2024 Added +6K +$726K +95.0% 12K Aug 14, 2024
Q1 2024 Reduced −2K −$196K −20.9% 6K May 15, 2024
Q4 2023 Reduced −2K −$249K −23.3% 8K Feb 14, 2024
Q3 2023 Added +2K +$168K +19.0% 10K Nov 14, 2023
Q2 2023 Added +5K +$479K +130.5% 8K Aug 14, 2023
Q1 2023 New +4K +$395K – 4K May 15, 2023
Q1 2022 New +2K +$210K – 2K May 16, 2022
Q3 2021 Reduced −2K −$171K −33.6% 4K Nov 15, 2021
Q2 2021 New +6K +$565K – 6K Aug 16, 2021
Data through Q1 2026 · filed May 15, 2026
13 grouped rows from 13 quarters

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Common questions

Does Joel Greenblatt own IOSP?

Yes. As of Q1 2026, Joel Greenblatt disclosed 8K shares of IOSP, worth $560K. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy IOSP?

Joel Greenblatt first disclosed a IOSP 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 IOSP?

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

How many shares of IOSP does Joel Greenblatt own?

Joel Greenblatt disclosed 8K shares of IOSP 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 IOSP?

Joel Greenblatt's estimated average buy price for IOSP is $77.87, 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.