Marine Products Corporation
US ˙ NYSE ˙ US5684271084
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityMPX / Marine Products Corporation
InstitutionState Street Corp
Latest Disclosed Ownership181,372 shares
Latest Disclosed Value $ 1,318,574
State Street Corp reports 1.04% decrease in ownership of MPX / Marine Products Corporation

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 181,372 shares of Marine Products Corporation (US:MPX) valued at $1,318,574 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 183,271 shares of Marine Products Corporation. This represents a change in shares of -1.04% during the quarter. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MARINE PRODS COM 568427108 181,372 -1,899 -1.04 1,319 -17.88 0.0000
2026-02-13 2025-12-31 13F MARINE PRODS COM 568427108 183,271 2,871 1.59 1,605 0.31 0.0001
2025-11-14 2025-09-30 13F MARINE PRODS COM 568427108 180,400 -5,514 -2.97 1,600 1.14 0.0001
2025-08-14 2025-06-30 13F MARINE PRODS COM 568427108 185,914 -886 -0.47 1,582 0.96 0.0001
2025-05-15 2025-03-31 13F MARINE PRODS COM 568427108 186,800 4,331 2.37 1,567 -6.34 0.0001
2025-02-14 2024-12-31 13F MARINE PRODS COM 568427108 182,469 3,511 1.96 1,673 -3.52 0.0001
2024-11-14 2024-09-30 13F MARINE PRODS COM 568427108 178,958 -7,172 -3.85 1,734 -7.72 0.0001
2024-08-14 2024-06-30 13F MARINE PRODS COM 568427108 186,130 8,403 4.73 1,880 -10.01 0.0001
2024-05-15 2024-03-31 13F MARINE PRODS COM 568427108 177,727 3,931 2.26 2,088 5.40 0.0001
2024-02-14 2023-12-31 13F MARINE PRODS COM 568427108 173,796 9,055 5.50 1,981 -15.34 0.0001
2023-11-14 2023-09-30 13F MARINE PRODS COM 568427108 164,741 6,035 3.80 2,341 -12.52 0.0001
2023-08-14 2023-06-30 13F MARINE PRODS COM 568427108 158,706 11,056 7.49 2,676 37.39 0.0001
2023-05-15 2023-03-31 13F MARINE PRODS COM 568427108 147,650 1,296 0.89 1,948 13.07 0.0001
2023-05-15 2022-12-31 13F/A-99 MARINE PRODS COM 568427108 146,354 -4,034 -2.68 1,723 35.38 0.0001
2023-05-15 2022-12-31 13F MARINE PRODS COM 568427108 146,354 -4,034 1,723 0.0001
2022-11-15 2022-09-30 13F MARINE PRODS COM 568427108 150,388 -2,745 -1.79 1,272 -12.64 0.0001
2022-08-15 2022-06-30 13F MARINE PRODS COM 568427108 153,133 -10,729 -6.55 1,456 -23.09 0.0001
2022-05-16 2022-03-31 13F MARINE PRODS COM 568427108 163,862 -727 -0.44 1,893 -7.97 0.0001
2022-02-14 2021-12-31 13F MARINE PRODS COM 568427108 164,589 -67 -0.04 2,057 -0.15 0.0001
2021-11-15 2021-09-30 13F MARINE PRODS COM 568427108 164,656 -32,305 -16.40 2,060 -32.26 0.0001
2021-08-16 2021-06-30 13F MARINE PRODS COM 568427108 196,961 50,750 34.71 3,041 27.83 0.0002
2021-07-09 2021-03-31 13F/A-1 MARINE PRODS COM 568427108 146,211 -4,917 -3.25 2,379 8.28 0.0001
2021-05-17 2021-03-31 13F MARINE PRODS COM 568427108 146,211 -4,917 2,379 0.0001
2021-02-16 2020-12-31 13F MARINE PRODS COM 568427108 151,128 7,254 5.04 2,197 -2.36 0.0001
2020-11-10 2020-09-30 13F MARINE PRODS COM 568427108 143,874 -7,792 -5.14 2,250 7.09 0.0002
2020-08-14 2020-06-30 13F MARINE PRODS COM 568427108 151,666 -6,487 -4.10 2,101 64.40 0.0002
2020-06-19 2020-03-31 13F/A-1 MARINE PRODS COM 568427108 158,153 4,082 2.65 1,278 -42.41 0.0001
2020-05-11 2020-03-31 13F MARINE PRODS COM 568427108 158,153 4,082 1,278 112.2341
2020-02-06 2019-12-31 13F MARINE PRODS COM 568427108 154,071 4,037 2.69 2,219 4.47 0.0002
2019-11-14 2019-09-30 13F MARINE PRODS COM 568427108 150,034 -1,453 -0.96 2,124 -9.19 0.0002
2019-08-14 2019-06-30 13F MARINE PRODS COM 568427108 151,487 2,383 1.60 2,339 16.48 0.0002
2019-05-15 2019-03-31 13F MARINE PRODS COM 568427108 149,104 2,272 1.55 2,008 -19.13 0.0002
2019-02-12 2018-12-31 13F MARINE PRODS COM 568427108 146,832 1,396 0.96 2,483 -25.44 0.0002
2018-11-09 2018-09-30 13F MARINE PRODUCTS Common equity shares 568427108 145,436 4,476 3.18 3,330 32.78 0.0003
2018-08-14 2018-06-30 13F MARINE PRODUCTS Common equity shares 568427108 140,960 -102 -0.07 2,508 26.79 0.0002
2018-05-15 2018-03-31 13F MARINE PRODUCTS Common equity shares 568427108 141,062 373 0.27 1,978 10.26 0.0002
2018-02-14 2017-12-31 13F MARINE PRODUCTS Common equity shares 568427108 140,689 -441 -0.31 1,794 -20.65 0.0001
2017-11-14 2017-09-30 13F MARINE PRODUCTS Common equity shares 568427108 141,130 -8,454 -5.65 2,261 -3.17 0.0002
2017-08-14 2017-06-30 13F MARINE PRODUCTS Common equity shares 568427108 149,584 16,583 12.47 2,335 61.82 0.0002
2017-05-15 2017-03-31 13F MARINE PRODUCTS Common equity shares 568427108 133,001 17,500 15.15 1,443 -10.26 0.0001
2017-02-09 2016-12-31 13F MARINE PRODUCTS Common equity shares 568427108 115,501 -35,681 -23.60 1,608 18.85 0.0002
2017-01-13 2016-09-30 13F/A-1 MARINE PRODUCTS Common equity shares 568427108 151,182 4,723 3.22 1,353 9.38 0.0001
2016-11-14 2016-09-30 13F MARINE PRODUCTS Common equity shares 568427108 151,182 1,353
2016-08-12 2016-06-30 13F MARINE PRODUCTS Common equity shares 568427108 146,459 -1,875 -1.26 1,237 9.76 0.0001
2016-05-20 2016-03-31 13F/A-1 MARINE PRODUCTS Common equity shares 568427108 148,334 -2,399 -1.59 1,127 23.57 0.0001
2016-05-12 2016-03-31 13F MARINE PRODUCTS Common equity shares 568427108 148,334 1,127
2016-02-16 2015-12-31 13F MARINE PRODUCTS Common equity shares 568427108 150,733 1,264 0.85 912 -12.31 0.0001
2015-11-16 2015-09-30 13F MARINE PRODUCTS Common equity shares 568427108 149,469 -6,218 -3.99 1,040 7.00 0.0001
2015-08-13 2015-06-30 13F MARINE PRODUCTS Common equity shares 568427108 155,687 -3,133 -1.97 972 -28.53 0.0001
2015-05-15 2015-03-31 13F MARINE PRODUCTS Common equity shares 568427108 158,820 298 0.19 1,360 1.57 0.0001
2015-02-11 2014-12-31 13F MARINE PRODUCTS Common equity shares 568427108 158,522 6,744 4.44 1,339 11.77 0.0001
2014-11-12 2014-09-30 13F/A-1 MARINE PRODUCTS Common equity shares 568427108 151,778 -5,055 -3.22 1,198 -7.92 0.0001
2014-11-10 2014-09-30 13F MARINE PRODUCTS Common equity shares 568427108 151,778 1,198
2014-08-12 2014-06-30 13F MARINE PRODUCTS Common equity shares 568427108 156,833 -2,012 -1.27 1,301 8.78 0.0001
2014-05-15 2014-03-31 13F/A-1 MARINE PRODUCTS Common equity shares 568427108 158,845 914 0.58 1,196 -24.64 0.0001
2014-05-13 2014-03-31 13F MARINE PRODUCTS Common equity shares 568427108 158,945 1,197
2014-02-06 2013-12-31 13F/A-1 MARINE PRODUCTS Common equity shares 568427108 157,931 -66 -0.04 1,587 10.82 0.0002
2014-02-06 2013-12-31 13F MARINE PRODUCTS Common equity shares 568427108 161,564 925
2013-11-12 2013-09-30 13F MARINE PRODUCTS Common equity shares 568427108 157,997 -467 -0.29 1,432 12.76 0.0002
2013-08-08 2013-06-30 13F MARINE PRODUCTS Common equity shares 568427108 158,464 158,464 1,270 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.