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Disclosery

MPTI M-TRON INDS INC

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COMMON STOCK (common), issuer CIK 1902314

84 managers (85 13F filers) reported a position in MPTI shares at 2025-12-31, 1,624,930 shares in all. 10 filers opened a position and 10 filers sold out during the quarter.

Managers
84
13F filers
85
New
10
Added
28
Reduced
26
Sold out
10
Shares held by filers
1,624,930

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)174,260$9.27M0.09%+32,76013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC143,581$7.64M<0.01%+16,98913F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.135,378$7.2M<0.01%+3,38413F-HRTimelineGroup
Archon Capital Management LLC118,233$6.29M3.58%013F-HRTimeline
NEXT CENTURY GROWTH INVESTORS LLC109,884$5.85M0.41%+22,83413F-HRTimeline
BARD ASSOCIATES INC86,129$4.58M1.18%-90813F-HRTimeline
HERALD INVESTMENT MANAGEMENT Ltd67,000$3.56M0.46%+12,00013F-HRTimeline
Palisades Investment Partners, LLC66,751$3.55M1.34%+4,39213F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC60,559$3.22M<0.01%+15,45413F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC56,854$3.03M<0.01%+1,11113F-HRTimelineGroup
Aristides Capital LLC54,054$2.88M0.99%+47,05413F-HR/ATimeline
Grandeur Peak Global Advisors, LLC44,061$2.34M0.32%new13F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP42,448$2.26M<0.01%+9,00013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP35,703$1.9M<0.01%+2,96213F-HRTimelineGroup
ADVISORY RESEARCH INC35,599$1.89M0.24%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND31,660$1.68M<0.01%+4,96013F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding25,746$1.37M+146Timeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP25,626$1.36M<0.01%-31513F-HRTimelineGroup
Illumine Investment Management, LLC24,628$1.31M0.96%+20413F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS22,724$1.21M<0.01%+18,55513F-HRTimelineGroup
MCINTYRE FREEDMAN & FLYNN INVESTMENT AD…22,000$1.17M0.73%013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC20,376$1.08M<0.01%-85913F-HRTimelineGroup
Concorde Asset Management, LLC19,986$1.06M0.43%+16413F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY19,228$1.02M<0.01%-3,30713F-HR/ATimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.17,623$938K<0.01%-16,94713F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP15,594$830K<0.01%-8,59613F-HRTimelineGroup
Janney Montgomery Scott LLC12,779$680K<0.01%-3,97313F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC12,539$667K<0.01%+4,38413F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp10,565$562K<0.01%+2,62413F-HRTimelineGroup
UBS Group AGin group UBS Group AG9,697$516K<0.01%-11413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co8,768$467K<0.01%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO8,502$452K<0.01%+7,51213F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP8,244$439K<0.01%+21613F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC7,843$417K<0.01%013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC6,934$369K0.01%013F-HRTimeline
CORSAIR CAPITAL MANAGEMENT, L.P.5,735$305K0.05%-4,26513F-HRTimeline
Warberg Asset Management LLC5,258$280K0.08%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC5,253$280K<0.01%-4,67913F-HR/ATimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC5,108$272K<0.01%-11,41713F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC4,498$239K<0.01%new13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC4,445$237K<0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC3,830$204K<0.01%+31713F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/3,699$197K<0.01%-1,05213F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD3,200$170K<0.01%new13F-HRTimeline
RHUMBLINE ADVISERS3,035$162K<0.01%-46413F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,875$153K<0.01%-1,49613F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN2,847$152K<0.01%+1,17913F-HRTimelineGroup
UMB Bank, n.a.2,133$114K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\1,709$91K<0.01%+1,63913F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC1,605$88.9K<0.01%new13F-HRTimeline
Truvestments Capital LLC1,181$62.9K0.01%-8613F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…1,127$60K<0.01%-1213F-HRTimelineGroup
CALDWELL SUTTER CAPITAL, INC.724$38.5K0.02%013F-HRTimeline
Police & Firemen's Retirement System of…687$36.6K<0.01%013F-HRTimeline
AlphaQuest LLC559$29.8K<0.01%-813F-HRTimeline
Solstein Capital, LLC500$26.6K0.01%013F-HRTimeline
State of Alaska, Department of Revenue503$26K<0.01%new13F-HRTimeline
BFSG, LLC300$16K<0.01%013F-HRTimeline
Quarry LP257$13.7K<0.01%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc253$13.5K<0.01%-1913F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…251$13.4K<0.01%013F-HRTimelineGroup
IFP Advisors, Inc221$11.8K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…217$11.5K<0.01%-15113F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…212$11.3K<0.01%+913F-HRTimelineGroup
CWM, LLCin group CWM, LLC208$11K<0.01%-413F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…151$8.04K<0.01%-313F-HRTimeline
MCF Advisors LLC140$7.45K<0.01%+3013F-HRTimeline
Sunbelt Securities, Inc.120$6.39K<0.01%new13F-HRTimeline
WealthCollab, LLC81$4.31K<0.01%013F-HRTimeline
FMR LLCin group FMR LLC77$4.09K<0.01%+5913F-HRTimelineGroup
AMALGAMATED BANK77$4K<0.01%-713F-HRTimeline
Farther Finance Advisors, LLC70$3.73K<0.01%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC67$3.56K<0.01%-3813F-HRTimelineGroup
Arax Advisory Partners50$2.66K<0.01%-14313F-HRTimeline
GAMMA Investing LLC35$1.86K<0.01%+1213F-HRTimeline
SBI Securities Co., Ltd.19$1.01K<0.01%013F-HRTimeline
True Wealth Design, LLC17$905<0.01%013F-HRTimeline
Sterling Capital Management LLC16$852<0.01%+1013F-HRTimeline
Allworth Financial LP9$479<0.01%013F-HRTimeline
Essential Partners LLC7$373<0.01%013F-HRTimeline
Founders Capital Management5$266<0.01%013F-HRTimeline
Clearstead Advisors, LLC1$54<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1$53<0.01%-113F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1$53<0.01%013F-HRTimelineGroup