Renaissance Technologies (RenTech)'s GLDD Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 381,700 shares of Great Lakes Dredge & Dock Corporation (GLDD) worth $6.49 M, representing 0.01% of the portfolio. First purchased in 2014-Q2, this long-term strategic position has been held for 43 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in GLDD, representing a significant commitment to this investment thesis. Largest addition occurred in Q3 2019, adding 723,101 shares. Largest reduction occurred in Q2 2021, reducing 369,765 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Great Lakes Dredge & Dock Corporation (GLDD) Holding Value Over Time
Track share changes against reported price movement
Quarterly Great Lakes Dredge & Dock Corporation (GLDD) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +122,909 | Add 47.49% | 381,700 | $17.00 |
| Q4 2025 | +3,735 | Add 1.46% | 258,791 | $13.12 |
| Q3 2025 | -129,332 | Reduce 33.65% | 255,056 | $11.99 |
| Q2 2025 | +267,988 | Add 230.23% | 384,388 | $12.19 |
| Q1 2025 | -162,201 | Reduce 58.22% | 116,400 | $8.70 |
| Q4 2024 | +47,500 | Add 20.55% | 278,601 | $11.29 |
| Q3 2024 | -94,500 | Reduce 29.02% | 231,101 | $10.53 |
| Q2 2024 | -137,823 | Reduce 29.74% | 325,601 | $8.78 |
| Q1 2024 | -200,677 | Reduce 30.22% | 463,424 | $8.75 |
| Q4 2023 | +53,900 | Add 8.83% | 664,101 | $7.68 |
| Q3 2023 | -119,600 | Reduce 16.39% | 610,201 | $7.97 |
| Q2 2023 | -355,700 | Reduce 32.77% | 729,801 | $0.01 |
| Q1 2023 | -174,034 | Reduce 13.82% | 1.09 M | $0.01 |
| Q4 2022 | -21,266 | Reduce 1.66% | 1.26 M | $0.01 |
| Q3 2022 | -191,700 | Reduce 13.02% | 1.28 M | $7.58 |
| Q2 2022 | -18,700 | Reduce 1.25% | 1.47 M | $13.11 |
| Q1 2022 | -48,500 | Reduce 3.15% | 1.49 M | $14.03 |
| Q4 2021 | -84,500 | Reduce 5.20% | 1.54 M | $15.72 |
| Q3 2021 | -155,700 | Reduce 8.75% | 1.62 M | $15.09 |
| Q2 2021 | -369,765 | Reduce 17.20% | 1.78 M | $14.61 |
| Q1 2021 | -174,735 | Reduce 7.52% | 2.15 M | $14.58 |
| Q4 2020 | -146,400 | Reduce 5.93% | 2.32 M | $13.17 |
| Q3 2020 | -33,500 | Reduce 1.34% | 2.47 M | $9.51 |
| Q2 2020 | -7,700 | Reduce 0.31% | 2.5 M | $9.26 |
| Q1 2020 | +302,900 | Add 13.71% | 2.51 M | $8.30 |
| Q4 2019 | +183,800 | Add 9.08% | 2.21 M | $11.33 |
| Q3 2019 | +723,101 | Add 55.53% | 2.03 M | $10.45 |
| Q2 2019 | +629,700 | Add 93.64% | 1.3 M | $11.04 |
| Q1 2019 | +383,100 | Add 132.38% | 672,500 | $8.91 |
| Q4 2018 | +171,200 | Add 144.84% | 289,400 | $6.62 |
| Q3 2018 | +74,600 | Add 171.10% | 118,200 | $6.20 |
| Q2 2018 | +1,500 | Add 3.56% | 43,600 | $5.25 |
| Q1 2018 | -35,100 | Reduce 45.47% | 42,100 | $4.61 |
| Q4 2017 | +77,200 | New Buy | 77,200 | $5.40 |
| Q1 2017 | -79,263 | Sold Out | 0 | $0.00 |
| Q4 2016 | +25,063 | Add 46.24% | 79,263 | $4.20 |
| Q3 2016 | +26,500 | Add 95.67% | 54,200 | $3.51 |
| Q2 2016 | +27,700 | New Buy | 27,700 | $4.37 |
| Q2 2015 | -207,900 | Sold Out | 0 | $0.00 |
| Q1 2015 | +12,800 | Add 6.56% | 207,900 | $6.01 |
| Q4 2014 | +50,700 | Add 35.11% | 195,100 | $8.56 |
| Q3 2014 | +127,100 | Add 734.68% | 144,400 | $6.18 |
| Q2 2014 | +17,300 | New Buy | 17,300 | $7.98 |
Renaissance Technologies (RenTech)'s Great Lakes Dredge & Dock Corporation Investment FAQs
Renaissance Technologies (RenTech) first purchased Great Lakes Dredge & Dock Corporation (GLDD) in Q2 2014, acquiring 17,300 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Great Lakes Dredge & Dock Corporation (GLDD) for 43 quarters since Q2 2014.
Renaissance Technologies (RenTech)'s largest addition to Great Lakes Dredge & Dock Corporation (GLDD) was in Q3 2019, adding 2,025,301 shares worth $21.16 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 381,700 shares of Great Lakes Dredge & Dock Corporation (GLDD), valued at approximately $6.49 M.
As of the Q1 2026 filing, Great Lakes Dredge & Dock Corporation (GLDD) represents approximately 0.01% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Great Lakes Dredge & Dock Corporation (GLDD) was 2,512,001 shares, as reported at the end of Q1 2020.