Great Lakes Dredge & Dock Corporation (GLDD) Institutional Ownership

Based on Q1 2026 13F filings, institutional ownership of Great Lakes Dredge & Dock Corporation stands at 77.6%, held across 180 reporting institutions.

BlackRock, Inc. is the largest reported institutional holder of GLDD, with approximately 5,917,589 shares worth $0.10B as of Q1 2026.

Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of GLDD, including TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.

Our composite Smart Money Score for GLDD is 59 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.

56 institutions opened new positions in GLDD during Q1 2026, while 96 fully exited. 83 added to existing positions and 40 trimmed.

GLDD institutional ownership rose by 13.58 percentage points quarter-over-quarter, with a net change of -40 holders.

The top 10 institutions account for 50.3% of all reported 13F value in GLDD, and the top 25 account for 76.5%.

All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.