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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 2025-09-30, 1,426,435 shares in all. 24 filers opened a position and 10 filers sold out during the quarter.

Managers
84
13F filers
85
New
24
Added
27
Reduced
18
Sold out
10
Shares held by filers
1,426,435

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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)141,500$7.85M0.08%-3,00013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.131,994$7.32M<0.01%+13,53413F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC126,592$7.02M<0.01%+2,12213F-HRTimelineGroup
Archon Capital Management LLC118,233$6.56M3.91%+17,56513F-HRTimeline
NEXT CENTURY GROWTH INVESTORS LLC87,050$4.83M0.35%+18,27313F-HRTimeline
BARD ASSOCIATES INC87,037$4.83M1.28%-5013F-HRTimeline
Palisades Investment Partners, LLC62,359$3.46M1.36%+27113F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC55,743$3.09M<0.01%+1,01213F-HRTimelineGroup
HERALD INVESTMENT MANAGEMENT Ltd55,000$3.04M0.4%+20,00013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC45,105$2.5M<0.01%+6,50013F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP33,448$1.85M<0.01%+2,67613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP32,741$1.82M<0.01%+2,78413F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.34,570$1.56M<0.01%-1,05813F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND26,700$1.48M<0.01%-60013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP25,941$1.44M<0.01%+11213F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding25,600$1.42M+18,985Timeline
Illumine Investment Management, LLC24,424$1.36M0.97%+15813F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP24,190$1.34M<0.01%-32,07313F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY22,535$1.25M<0.01%-5,08713F-HR/ATimelineGroup
MCINTYRE FREEDMAN & FLYNN INVESTMENT AD…22,000$1.22M0.73%013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC21,235$1.18M<0.01%+78913F-HRTimelineGroup
Concorde Asset Management, LLC19,822$1.05M0.44%13F-HRTimeline
Janney Montgomery Scott LLC16,752$929K<0.01%+8,60913F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC16,525$917K<0.01%new13F-HRTimelineGroup
G2 Investment Partners Management LLC15,000$832K0.17%-36,33613F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd10,355$573K0.01%+5,41713F-HRTimelineGroup
CORSAIR CAPITAL MANAGEMENT, L.P.10,000$555K0.1%new13F-HR/ATimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC9,932$551K<0.01%+3,99013F-HRTimelineGroup
UBS Group AGin group UBS Group AG9,811$544K<0.01%+3,78613F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…9,191$510K<0.01%-12,02413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co8,768$486K<0.01%013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC8,155$452K<0.01%-7,84313F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP8,028$445K<0.01%new13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp7,941$441K<0.01%+1,09813F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC7,843$435K<0.01%-3,25313F-HRTimelineGroup
Worth Venture Partners, LLC7,062$392K1.15%new13F-HRTimeline
Aristides Capital LLC7,000$388K0.11%new13F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC6,934$385K0.01%+60013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/4,751$264K<0.01%+1,85213F-HR/ATimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA4,371$243K<0.01%-1,37813F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS4,169$231K<0.01%+3,71813F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd3,789$210K0.01%new13F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC3,705$206K<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC3,513$195K<0.01%-1,12913F-HR/ATimelineGroup
RHUMBLINE ADVISERS3,499$194K<0.01%-2713F-HRTimeline
Acuitas Investments, LLC2,531$140K0.09%new13F-HR/ATimeline
UMB Bank, n.a.2,133$118K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,668$92.5K<0.01%+29913F-HRTimelineGroup
Truvestments Capital LLC1,267$70.3K0.01%-50513F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…1,139$63.2K<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO990$54.9K<0.01%-17013F-HR/ATimelineGroup
CALDWELL SUTTER CAPITAL, INC.724$40.2K0.02%013F-HRTimeline
Police & Firemen's Retirement System of…687$38.1K<0.01%013F-HRTimeline
AlphaQuest LLC567$31.5K<0.01%013F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.500$27.7K<0.01%013F-HRTimelineGroup
Solstein Capital, LLC500$27.7K0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…368$20.4K<0.01%+18113F-HRTimelineGroup
BFSG, LLC300$16.6K<0.01%013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc272$15.1K<0.01%013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…251$13.9K<0.01%013F-HRTimelineGroup
IFP Advisors, Inc221$12.3K<0.01%+12113F-HR/ATimeline
CWM, LLCin group CWM, LLC212$12K<0.01%new13F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…203$11.3K<0.01%new13F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…154$8.54K<0.01%+113F-HRTimeline
MCF Advisors LLC110$6.1K<0.01%+2213F-HRTimeline
CITIGROUP INCin group CITIGROUP INC105$5.83K<0.01%-76613F-HRTimelineGroup
AMALGAMATED BANK84$5K<0.01%013F-HRTimeline
Arax Advisory Partners193$4.8K<0.01%new13F-HRTimeline
WealthCollab, LLC81$4.49K<0.01%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\70$3.88K<0.01%-2,37913F-HRTimelineGroup
Farther Finance Advisors, LLC70$3.88K<0.01%new13F-HRTimeline
GAMMA Investing LLC23$1.28K<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.19$1.05K<0.01%-13013F-HRTimeline
FMR LLCin group FMR LLC18$992<0.01%013F-HRTimelineGroup
True Wealth Design, LLC17$944<0.01%new13F-HRTimeline
Rise Advisors, LLC12$666<0.01%new13F-HRTimeline
Allworth Financial LP9$500<0.01%new13F-HRTimeline
Essential Partners LLC7$388<0.01%new13F-HRTimeline
Sterling Capital Management LLC6$333<0.01%013F-HRTimeline
Founders Capital Management5$277<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…2$111<0.01%new13F-HRTimelineGroup
Advisory Services Network, LLC2$111<0.01%new13F-HRTimeline
Clearstead Advisors, LLC1$56<0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1$55<0.01%new13F-HRTimelineGroup