CASTLEKEEP INVESTMENT ADVISORS LLC GLDD — GREAT LAKES DREDGE & DOCK CO

Ownership history in CASTLEKEEP INVESTMENT ADVISORS LLC  ·  5 quarters on record

AI Ownership Summary

CASTLEKEEP INVESTMENT ADVISORS LLC reported GREAT LAKES DREDGE & DOCK CO (GLDD) in 5 quarterly 13F filings from 2024 Q4 through 2025 Q4. Peak portfolio weight reached 3.82% in 2024 Q4. The latest visible filing shows GLDD at 2.54% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this GLDD ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CASTLEKEEP INVESTMENT ADVISORS LLC's position in GREAT LAKES DREDGE & DOCK CO, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

GLDD was reported at 2.54% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
3.82% in 2024 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q4 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

GLDD stock page CASTLEKEEP INVESTMENT ADVISORS LLC fund profile CASTLEKEEP INVESTMENT ADVISORS LLC full holdings
How CASTLEKEEP INVESTMENT ADVISORS LLC held GLDD — position size vs. price
% of Fund (quarterly)
📋 Quarterly Holdings History 5 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED — — — 428,358 -26,171 -5.8% 2.54% $5.6M 2026-02-10 $16.14
2025 Q3 REDUCED — — — 454,529 -22,634 -4.7% 2.55% $5.4M 2025-11-05 $12.58
2025 Q2 REDUCED — — — 477,163 -19,249 -3.9% 2.85% $5.8M 2025-08-05 $11.45
2025 Q1 REDUCED — — — 496,412 -67,013 -11.9% 2.22% $4.3M 2025-05-02 $9.62
2024 Q4 INITIATED — — — 563,425 — — 3.82% $4.9M 2025-02-21 $8.42

🏢 Other funds also holding GLDD

As of 2026 Q1 — sorted by position size

Beryl Capital Management LLC 3Y 7Y 14.14% Minerva Advisors LLC 3Y 7Y 11.3% Versor Investments LP 3Y 7Y 4.23% Sand Grove Capital Management LLP 3Y 7Y 3.42% WATER ISLAND CAPITAL LLC 3Y 7Y 2.4% GLAZER CAPITAL, LLC 3Y 7Y 1.06% PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. 3Y 7Y 0.98% OXFORD ASSET MANAGEMENT LLP 3Y 7Y 0.89% Harvey Partners, LLC 3Y 7Y 0.83% ODDO BHF ASSET MANAGEMENT SAS 0.78%

FAQ About CASTLEKEEP INVESTMENT ADVISORS LLC and GLDD

These are the practical questions this page is built to answer before you even open the full history table.

How long has CASTLEKEEP INVESTMENT ADVISORS LLC reported owning GLDD?

CASTLEKEEP INVESTMENT ADVISORS LLC reported GLDD across 5 quarterly 13F filings, from 2024 Q4 through 2025 Q4.

What was the largest reported GLDD position in CASTLEKEEP INVESTMENT ADVISORS LLC's portfolio?

The largest reported portfolio weight for GLDD was 3.82% in 2024 Q4.

What is the latest reported GLDD position on this page?

The most recent filing on this page is 2025 Q4, when CASTLEKEEP INVESTMENT ADVISORS LLC reported 428,358 shares, equal to 2.54% of portfolio, with an estimated market value of $5.6M.

What does the chart on this GLDD ownership page compare?

The chart compares CASTLEKEEP INVESTMENT ADVISORS LLC's quarterly GLDD portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did CASTLEKEEP INVESTMENT ADVISORS LLC time their GLDD position?

Based on 13F filing dates vs. subsequent GLDD price moves, CASTLEKEEP INVESTMENT ADVISORS LLC correctly timed 1 out of 4 reported position changes (25%). The annualised alpha on GLDD relative to SPY over the holding period was +72.2%.

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