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Disclosery

MPX MARINE PRODS CORP

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cs (common)

70 managers (75 13F filers) reported a position in MPX shares at 2026-03-31, 5,606,661 shares in all. 10 filers opened a position and 12 filers sold out during the quarter.

Managers
70
13F filers
75
New
10
Added
19
Reduced
29
Sold out
12
Shares held by filers
5,606,661

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP767,510$5.58M<0.01%+21,09813F-HRTimelineGroup
GAMCO Investors (Gabelli)group of 2 filers holding741,071$5.39M+9,083Timeline
BlackRock, Inc.in group BlackRock, Inc.625,523$4.55M<0.01%-5,93613F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding577,128$4.2MnewTimeline
DEPRINCE RACE & ZOLLO INC446,447$3.25M0.06%+30,07013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…387,577$2.82M<0.01%+78,27213F-HRTimelineGroup
De Lisle Partners LLP363,696$2.64M0.32%013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC260,637$1.9M<0.01%+10,85313F-HRTimelineGroup
Teton Advisors, LLC223,000$1.62M1.14%-1,00013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP181,372$1.32M<0.01%-1,89913F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp158,818$1.15M<0.01%+14,25313F-HRTimelineGroup
K2 PRINCIPAL FUND, L.P.120,216$874K0.09%new13F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP85,836$624K<0.01%-4,87313F-HRTimelineGroup
HANOVER ADVISORS INC78,135$568K0.23%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC66,002$480K<0.01%-1,80013F-HRTimeline
ABC ARBITRAGE SAin group ABC ARBITRAGE SA62,067$451K0.06%new13F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC54,435$396K<0.01%-21,47913F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP54,000$393K<0.01%013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC43,393$315K<0.01%-73513F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC31,178$227K0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY30,695$223K<0.01%-65,79213F-HRTimelineGroup
Pinnacle Financial Partners, Inc.in group Pinnacle Financial Partners, …30,565$222K<0.01%013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co25,735$187K<0.01%-2513F-HRTimelineGroup
Ancora Advisors LLCin group Ancora Advisors LLC25,207$183K<0.01%new13F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/20,355$148K<0.01%+4,20013F-HRTimeline
Nuveen, LLCin group TIAA19,523$142K<0.01%+11713F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding17,831$130K+12,380Timeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…14,442$104K<0.01%+4713F-HRTimeline
ALLIANCEBERNSTEIN L.P.10,440$91.5K<0.01%013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/12,207$88.7K<0.01%+1,50413F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…12,034$87.5K<0.01%+1,97813F-HRTimelineGroup
RHUMBLINE ADVISERS10,738$78.1K<0.01%-1813F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.6,274$45.6K<0.01%-45813F-HRTimelineGroup
FMR LLCin group FMR LLC4,739$34.5K<0.01%-3,73013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,655$33.8K<0.01%+3,51413F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…4,302$31.3K<0.01%+10213F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co4,234$31K<0.01%+16313F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND4,171$30.3K<0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO3,757$27.3K<0.01%-27713F-HR/ATimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN3,253$23.7K<0.01%-6,53413F-HR/ATimelineGroup
Police & Firemen's Retirement System of…3,065$22.3K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS2,250$16.4K<0.01%+713F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC2,227$16.2K<0.01%-11,59213F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,026$7K<0.01%-2,14613F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…813$5.91K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc681$4.95K<0.01%-5813F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…540$3.93K<0.01%+2113F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…476$3.46K<0.01%-5713F-HRTimeline
CITIGROUP INCin group CITIGROUP INC437$3.18K<0.01%-51513F-HRTimelineGroup
HARBOR CAPITAL ADVISORS, INC.444$3K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC322$2.34K<0.01%-45213F-HRTimelineGroup
Triumph Capital Management271$1.97K<0.01%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\213$1.55K<0.01%013F-HRTimelineGroup
Sterling Capital Management LLC162$1.18K<0.01%-14213F-HRTimeline
Farther Finance Advisors, LLC145$1.04K<0.01%new13F-HRTimeline
GAMMA Investing LLC99$720<0.01%-1313F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.70$509<0.01%-5613F-HR/ATimelineGroup
COUNTRY TRUST BANK60$436<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP43$314<0.01%new13F-HRTimelineGroup
MAI Capital Management14$105<0.01%new13F-HRTimeline
IFP Advisors, Inc14$102<0.01%-813F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…14$102<0.01%+413F-HR/ATimelineGroup
Essential Partners LLC12$87<0.01%-113F-HRTimeline
Root Financial Partners, LLC8$58<0.01%new13F-HRTimeline
Arax Advisory Partners4$51<0.01%new13F-HRTimeline
True Wealth Design, LLC4$30<0.01%-113F-HRTimeline
Sunbelt Securities, Inc.3$22<0.01%-113F-HRTimeline
Allworth Financial LP1$8<0.01%-113F-HRTimeline
Caitong International Asset Management …1$7<0.01%new13F-HRTimeline
Covestor Ltd44$00%-413F-HRTimelineValue filed as zero, left out of ratios.