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Disclosery

MPTI M-TRON INDS INC

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COMMON STOCK (common), issuer CIK 1902314

117 managers (120 13F filers) reported a position in MPTI shares at 2026-06-30, 2,883,336 shares in all. 35 filers opened a position and 10 filers sold out during the quarter.

Managers
117
13F filers
120
New
35
Added
57
Reduced
18
Sold out
10
Shares held by filers
2,883,336

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
T. Rowe Price Investment Management, In…255,506$25.3M0.02%new13F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.252,972$25.1M<0.01%+111,22413F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding233,749$23.2M+73,560Timeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)201,280$20M0.18%+32,88013F-HRTimelineGroup
ROYCE & ASSOCIATES LP156,595$15.5M0.13%+148,27113F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP132,465$13.1M0.01%+70,00213F-HRTimelineGroup
NEXT CENTURY GROWTH INVESTORS LLC124,173$12.3M0.65%+15,95313F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC100,646$9.98M<0.01%+36,71513F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC96,005$9.52M0.01%-78413F-HRTimeline
STATE STREET CORPin group STATE STREET CORP82,493$8.18M<0.01%+38,21013F-HRTimelineGroup
Palisades Investment Partners, LLC82,296$8.16M2.32%+1,26913F-HRTimeline
CONGRUENCE CAPITAL, LLC66,701$6.61M1.73%+24,44513F-HRTimeline
ADVISORY RESEARCH INC59,011$5.85M0.58%+8,46813F-HRTimeline
HERALD INVESTMENT MANAGEMENT Ltd58,500$5.79M0.79%+3,50013F-HRTimeline
Grandeur Peak Global Advisors, LLC56,681$5.62M1.3%+5,83313F-HR/ATimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.48,493$4.81M<0.01%+43,07713F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP47,681$4.73M<0.01%+2,69313F-HRTimelineGroup
HUNTER ASSOCIATES INVESTMENT MANAGEMENT…46,804$4.63M0.53%new13F-HRTimeline
BARD ASSOCIATES INC44,578$4.42M0.98%-40,94013F-HRTimeline
Aristides Capital LLC41,209$4.09M1.04%-24,46413F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP39,832$3.95M<0.01%+11,39913F-HRTimelineGroup
Potrero Capital Research LLC38,161$3.78M2.32%+6,36013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND31,660$3.14M<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS30,583$3.03M<0.01%+8,15513F-HRTimelineGroup
MCINTYRE FREEDMAN & FLYNN INVESTMENT AD…25,800$2.56M1.53%+4,30013F-HRTimeline
Verition Fund Management LLC25,000$2.48M0.02%new13F-HR/ATimeline
Illumine Investment Management, LLC0$2.46M1.6%-24,09313F-HRTimelineAmount filed as zero, left out of ratios.
UBS Group AGin group UBS Group AG24,493$2.43M<0.01%+3,17713F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY21,358$2.12M<0.01%+4,23913F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.18,958$1.88M<0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC18,769$1.86M<0.01%+13,68313F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC17,258$1.71M<0.01%+15,04813F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp17,143$1.7M<0.01%+6,06913F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC17,098$1.7M<0.01%-3,03313F-HRTimelineGroup
Nuveen, LLCin group TIAA16,715$1.66M<0.01%+6,63813F-HRTimelineGroup
Apis Capital Advisors, LLC16,000$1.59M0.15%+4,00013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…14,667$1.45M<0.01%+37313F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd14,548$1.44M0.02%+3,91713F-HRTimelineGroup
Informed Momentum Co LLC14,516$1.44M0.13%new13F-HRTimeline
ExodusPoint Capital Management, LP14,110$1.4M0.01%-7,77213F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.13,104$1.3M<0.01%+10,57713F-HRTimelineGroup
PLATINUM INVESTMENT MANAGEMENT LTD12,839$1.27M0.31%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co12,807$1.27M<0.01%+4,14913F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP12,763$1.27M<0.01%+2,82413F-HRTimelineGroup
Qube Research & Technologies Ltd11,986$1.19M<0.01%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC11,912$1.18M<0.01%new13F-HRTimelineGroup
Janney Montgomery Scott LLC11,778$1.17M<0.01%-55113F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…11,028$1.09M<0.01%-87813F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO10,207$1.01M<0.01%-8,19113F-HRTimelineGroup
Q Fund Management (Hong Kong) Ltd10,000$992K0.91%new13F-HRTimeline
Concorde Asset Management, LLC9,822$974K0.56%-14113F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC9,448$937K<0.01%new13F-HRTimelineGroup
Marex Group Ltdin group Marex Group Ltd9,318$924K0.01%+3,38613F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC9,199$912K<0.01%-13,55613F-HRTimelineGroup
Archon Capital Management LLC8,933$886K0.36%-69,30013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/8,879$880K<0.01%+3,53613F-HRTimelineGroup
TD Asset Management Inc8,572$850K<0.01%new13F-HRTimeline
GSA CAPITAL PARTNERS LLP7,333$727K0.05%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC6,621$656K<0.01%-1,12813F-HRTimelineGroup
CORSAIR CAPITAL MANAGEMENT, L.P.6,568$651K0.08%+83313F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC5,434$539K0.01%-1,50013F-HRTimeline
AVIVA PLCin group AVIVA PLC4,847$481K<0.01%new13F-HRTimelineGroup
RHUMBLINE ADVISERS4,738$470K<0.01%+1,66713F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN4,135$410K<0.01%+2,84513F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\4,121$409K<0.01%+2,41213F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC3,722$369K<0.01%+60813F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/3,433$341K<0.01%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.4,700$314K<0.01%new13F-HRTimeline
Creative Planningin group Creative Planning2,927$290K<0.01%new13F-HRTimelineGroup
Onyx Bridge Wealth Group LLC2,775$275K0.02%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,746$273K<0.01%+22913F-HRTimelineGroup
Numerai GP LLC2,670$265K0.02%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…2,549$253K<0.01%+95813F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC2,465$244K<0.01%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources2,226$221K<0.01%new13F-HRTimelineGroup
UMB Bank, n.a.2,133$211K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Worth Venture Partners, LLC2,119$210K0.47%new13F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC2,119$210K<0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC1,961$194K<0.01%+1,81813F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…1,926$191K<0.01%+64313F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO1,762$175K<0.01%+63913F-HRTimelineGroup
Quantbot Technologies LP1,451$144K0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…1,234$122K<0.01%+54713F-HRTimeline
Truvestments Capital LLC968$96K0.01%013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC840$83.3K<0.01%+26313F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP854$79.9K<0.01%new13F-HRTimelineGroup
CALDWELL SUTTER CAPITAL, INC.724$71.8K0.03%013F-HRTimeline
State of Alaska, Department of Revenue603$59K<0.01%+10013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc405$40.2K<0.01%+18313F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…401$39.8K<0.01%-5913F-HRTimelineGroup
STRS OHIO400$39.7K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…380$37.7K<0.01%+12913F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…298$30K<0.01%new13F-HRTimeline
BFSG, LLC300$29.7K<0.01%013F-HRTimeline
IFP Advisors, Inc239$23.7K<0.01%+413F-HRTimeline
MCF Advisors LLC169$16.8K<0.01%+2913F-HRTimeline
Leonteq Securities AG146$14.4K<0.01%new13F-HRTimeline
FMR LLCin group FMR LLC139$13.8K<0.01%+4813F-HRTimelineGroup
Integrated Wealth Concepts LLC124$12.3K<0.01%new13F-HRTimeline
WealthCollab, LLC81$8.03K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC75$7.44K<0.01%+513F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…66$6.54K<0.01%new13F-HRTimelineGroup
GAMMA Investing LLC66$6.54K<0.01%-113F-HRTimeline
WEST PACES ADVISORS INC.47$4.66K<0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…46$4.56K<0.01%-10413F-HR/ATimeline
Stone House Investment Management, LLC40$3.97K<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.37$3.67K<0.01%+1913F-HRTimeline
True Wealth Design, LLC17$1.69K<0.01%013F-HRTimeline
Sterling Capital Management LLC15$1.49K<0.01%-113F-HRTimeline
Allworth Financial LP11$1.09K<0.01%+213F-HRTimeline
Covestor Ltd6$1K<0.01%new13F-HRTimeline
Essential Partners LLC7$694<0.01%013F-HRTimeline
Arax Advisory Partners6$595<0.01%new13F-HRTimeline
Rialto Wealth Management, LLC5$496<0.01%new13F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/2$198<0.01%new13F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1$99<0.01%013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1$99<0.01%013F-HRTimelineGroup