Ticker · CUSIP 568427108

MPX

MARINE PRODS CORP
···Share
Holders (tracked)
3
Combined shares
583,445
Combined value
$4.97M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
382024Q12025Q4

SEC event timeline

5 events
  1. Ken Griffin (Citadel Advisors) exited2026-02-17
    −30,173 shares · 2025Q4
    13F
  2. Renaissance Technologies trimmed2026-02-12
    −3,300 shares · 2025Q4
    13F
  3. Mario Gabelli (GAMCO) trimmed2026-02-05
    −7,585 shares · 2025Q4
    13F
  4. Renaissance Technologies added2025-11-13
    +600 shares · 2025Q3
    13F
  5. Mario Gabelli (GAMCO) trimmed2025-11-12
    −4,609 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
View full insider history for MPX →

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed2
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
5
$15.1M
2022Q2
6
$12.5M
2022Q3
5
$11K
2022Q4
8
$14.3M
2023Q1
8
$16.3M
2023Q2
8
$22.6M
2023Q3
8
$19.1M
2023Q4
8
$14.8M
2024Q1
8
$14.8M
2024Q2
7
$12.9M
2024Q3
6
$6.1M
2024Q4
6
$5.7M
2025Q1
3
$4.9M
2025Q2
3
$5.0M
2025Q3
4
$5.4M
2025Q4
3
$5.0M

Who owns MPX

3 super-investors · 2025Q4
Tracked stake
583.4K
shares
Combined value
$5M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim2Held1
#ManagerSharesValue
1Mario Gabelli
GAMCO
499.5K$4M
2Renaissance Technologies67.8K$594K
3T. Rowe Price16.2K$142

Recent moves

20 transactions
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