GLDD Institutional Ownership
GREAT LAKES DREDGE & DOCK CO
Schedule 13G/13D reports beneficial ownership at an observation date. “Accumulation” or “reduction” is inferred
from changes in reported shares when available; it is not a list of individual trades or exact execution prices.
Form 13F rows are quarter-end holding context only and do not establish an exact entry date.
Free access includes current parsed ownership filings, reported share changes, and ownership-percentage changes.
Filing-specific significance scoring, disclosure-speed analysis, confirmation/divergence signals, and signal alerts require Investor or Pro. The overall institutional consensus preview remains public.
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Cross-institution intelligence
Institutional Research
Each institution is compared with its own prior filing, then the latest institution-level directions are compared for breadth.
Latest filing
Apr 28, 2026
Public consensus preview
Mixed positioning
49/100 institutional research score
2 tracked institutions
Latest filing Apr 28, 2026
1 accumulating, 1 reducing across 2 comparable institutions.
Accumulating1
Unchanged0
Reducing1
Exited0
The overall consensus is public. Detailed holder comparisons, breadth history, ownership charts, and filing-specific signal analysis remain part of Investor and Pro research.
Price context
52-week position is market context and does not change the institutional consensus score.
52-week range data is not available for this security yet.
Tracked institutions
Public holder names and filing freshness. Detailed institution-by-institution analysis is locked.
BlackRock Legacy
Jan 24, 2024 filed
Dimensional Fund Advisors
Jul 14, 2026 filed
BlackRock
Apr 28, 2026 filed
Beneficial ownership filing history
Showing 3 of 6 parsed filing(s) · 3 older require more history access| Holder | Observed / filed | Reported change | Shares | Ownership | Observation | Filing | Latest |
|---|---|---|---|---|---|---|---|
| Dimensional Fund Advisors CIK0000354204 | Jun 30, 2026 observed Jul 14, 2026 filed · 14d Schedule 13G amendment | Earliest Schedule 13G amendment found | 1 | 0.00% | |||
| BlackRock CIK0002012383 | Mar 31, 2026 observed Apr 28, 2026 filed · 28d Schedule 13G amendment | Reported reduction | 5.5M -1.2M | 12.00% 0.00 pts | |||
| BlackRock CIK0002012383 | Feb 28, 2026 observed Mar 4, 2026 filed · 4d Schedule 13G amendment | Earliest Schedule 13G amendment found | 6.7M | 12.00% |
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Related research
Crawlable links to other securities with similar institutional consensus or recent multi-institution accumulation.