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Ken Griffin's Great Lakes Dredge & Dock Corporation (GLDD) position

Yes: as of Q1 2026, Ken Griffin holds 38K shares of GLDD worth $638K (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
$638K
Shares held
38K
% of portfolio
0.0%
Est. average buy price (i)
$9.58
est. since Q1 2021
Quarter-end price
$17.00

Estimated trade prices

Average price in quarters with purchases
$9.33
Average prices in quarters with sales
  • Q1 2026: $15.93 (116K shares sold)
  • Q4 2025: $12.32 (10K shares sold)
  • Q3 2025: $11.60 (305K shares sold)
  • Q2 2025: $10.40 (48K shares sold)
  • Q3 2024: $9.29 (156K shares sold)
  • Q1 2024: $8.23 (77K shares sold)
  • Q3 2023: $8.29 (41K shares sold)
  • Q1 2023: $5.99 (218K shares sold)
  • Q1 2022: $14.39 (9K shares sold)
  • Q4 2021: $15.22 (12K shares sold)
  • Q2 2021: $14.77 (140K shares sold)

GLDD price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$4$10$15$2020222023202420252026Sold 140K shares (89.5%) · Q2 2021. Average closing price $14.77 · Price range $13.54–$16.17140KsharessoldAdded 33K shares (201.8%) · Q3 2021. Average closing price $14.86 · Price range $14.08–$15.7633KsharespurchasedSold 12K shares (23.5%) · Q4 2021. Average closing price $15.22 · Price range $14.35–$16.1612KsharessoldSold 9K shares (24.3%) · Q1 2022. Average closing price $14.39 · Price range $13.40–$16.079KsharessoldAdded 2K shares (6.4%) · Q2 2022. Average closing price $14.19 · Price range $13.11–$15.372KsharespurchasedAdded 252K shares (828.3%) · Q3 2022. Average closing price $10.47 · Price range $7.58–$12.99252KsharespurchasedAdded 64K shares (22.8%) · Q4 2022. Average closing price $7.03 · Price range $5.67–$8.0964KsharespurchasedSold 218K shares (63.0%) · Q1 2023. Average closing price $5.99 · Price range $4.80–$7.00218KsharessoldAdded 161K shares (125.4%) · Q2 2023. Average closing price $6.49 · Price range $5.27–$8.16161KsharespurchasedSold 41K shares (14.1%) · Q3 2023. Average closing price $8.29 · Price range $7.57–$9.4541KsharessoldAdded 53K shares (21.4%) · Q4 2023. Average closing price $7.28 · Price range $6.25–$8.1653KsharespurchasedSold 77K shares (25.6%) · Q1 2024. Average closing price $8.23 · Price range $7.12–$9.5577KsharessoldAdded 40K shares (17.7%) · Q2 2024. Average closing price $8.50 · Price range $6.60–$9.6540KsharespurchasedSold 156K shares (59.0%) · Q3 2024. Average closing price $9.29 · Price range $8.10–$10.79156KsharessoldAdded 754 shares (0.7%) · Q4 2024. Average closing price $11.96 · Price range $10.72–$12.73754sharespurchasedAdded 407K shares (373.0%) · Q1 2025. Average closing price $9.98 · Price range $7.67–$12.44407KsharespurchasedSold 48K shares (9.3%) · Q2 2025. Average closing price $10.40 · Price range $8.04–$12.3148KsharessoldSold 305K shares (65.0%) · Q3 2025. Average closing price $11.60 · Price range $10.53–$12.27305KsharessoldSold 10K shares (6.2%) · Q4 2025. Average closing price $12.32 · Price range $10.78–$13.8810KsharessoldSold 116K shares (75.6%) · Q1 2026. Average closing price $15.93 · Price range $13.10–$17.00116Ksharessold
Average closing price · filing quarter
$15.93
Price range · filing quarter
$13.10 – $17.00
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −116K −$1.9M −75.6% 38K May 15, 2026
Q4 2025 Reduced −10K −$125K −6.2% 154K Feb 17, 2026
Q3 2025 Reduced −305K −$3.5M −65.0% 164K Nov 14, 2025
Q2 2025 Reduced −48K −$498K −9.3% 469K Aug 14, 2025
Q1 2025 Added +407K +$4.1M +373.0% 517K May 15, 2025
Q4 2024 Added +754 +$9K +0.7% 109K Feb 14, 2025
Q3 2024 Reduced −156K −$1.5M −59.0% 108K Nov 14, 2024
Q2 2024 Added +40K +$339K +17.7% 264K Aug 14, 2024
Q1 2024 Reduced −77K −$636K −25.6% 225K May 15, 2024
Q4 2023 Added +53K +$388K +21.4% 302K Feb 14, 2024
Q3 2023 Reduced −41K −$337K −14.1% 249K Nov 14, 2023
Q2 2023 Added +161K +$1.0M +125.4% 289K Aug 14, 2023
Q1 2023 Reduced −218K −$1.3M −63.0% 128K May 15, 2023
Q4 2022 Added +64K +$452K +22.8% 347K Feb 14, 2023
Q3 2022 Added +252K +$2.6M +828.3% 282K Nov 14, 2022
Q2 2022 Added +2K +$26K +6.4% 30K Aug 15, 2022
Q1 2022 Reduced −9K −$132K −24.3% 29K May 16, 2022
Q4 2021 Reduced −12K −$177K −23.5% 38K Feb 14, 2022
Q3 2021 Added +33K +$491K +201.8% 49K Nov 15, 2021
Q2 2021 Reduced −140K −$2.1M −89.5% 16K Aug 16, 2021
Q1 2021 First covered – – – 156K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
21 grouped rows from 21 quarters

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Common questions

Does Ken Griffin own GLDD?

Yes. As of Q1 2026, Ken Griffin disclosed 38K shares of GLDD, worth $638K. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy GLDD?

Ken Griffin held GLDD 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 Ken Griffin sell GLDD?

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

How many shares of GLDD does Ken Griffin own?

Ken Griffin disclosed 38K shares of GLDD as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for GLDD?

Ken Griffin began building the GLDD 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.