What does CUSIP 390607109 represent in this 13F holders report?

CUSIP 390607109 is the security identifier for GLDD - Great Lakes Dredge & Dock CORP - Common Stock used to aggregate holder disclosures.

How many institutions held GLDD - Great Lakes Dredge & Dock CORP - Common Stock in Q1 2021?

141 institutional investors reported GLDD - Great Lakes Dredge & Dock CORP - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

Great Lakes Dredge & Dock CORP - Common Stock (GLDD)

CUSIP: 390607109

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 66,399,451
Total 13F shares: 55,578,762
Share change: +284,064
Total reported value: $810,681,893
Put/Call ratio: 156%
Price per share: $14.58
Number of holders: 141
Value change: +$10,042,797
Number of buys: 63
Number of sells: 83

Quarterly Holders Quick Answers

What is CUSIP 390607109?
CUSIP 390607109 identifies GLDD - Great Lakes Dredge & Dock CORP - Common Stock in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 390607109:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of GLDD - Great Lakes Dredge & Dock CORP - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

No top shareholder records were found across 13F, 13D/G, and Forms 3/4/5 for this issuer.

Institutional Holders of Great Lakes Dredge & Dock CORP - Common Stock (GLDD) as of Q1 2021

As of 31 Mar 2021, Great Lakes Dredge & Dock CORP - Common Stock (GLDD) was held by 141 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 55,578,762 shares. The largest 10 holders included BlackRock Inc., JENNISON ASSOCIATES LLC, DIMENSIONAL FUND ADVISORS LP, VANGUARD GROUP INC, ASHFORD CAPITAL MANAGEMENT INC, FRANKLIN RESOURCES INC, Neumeier Poma Investment Counsel LLC, RENAISSANCE TECHNOLOGIES LLC, INVESTMENT COUNSELORS OF MARYLAND LLC, and D. E. Shaw & Co., Inc.. This page lists 141 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

140

Q1 2021 holders

141

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.