MPTI · M-tron Industries, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding MPTI
All superinvestors →Holder Concentration
Across 119 13F filersWho Holds MPTI
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 118 filers, like-for-like change +39.2%; actively managed books +34.7%; index-like books +60.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 53.6% | 58 | +23.5% |
| Exempt adviser | 0.8% | 2 | -57.4% |
| Adviser | 14.9% | 6 | +205.5% |
| Bank | 6.4% | 12 | +58.7% |
| Insurer | 0.2% | 1 | new |
| Benefit plan | 0.0% | 2 | +197.3% |
| Non-US | 3.2% | 4 | +13.2% |
| Holding company | 10.6% | 5 | +83.9% |
| Broker-dealer | 0.0% | 0 | — |
| Unknown | 10.3% | 28 | +12.9% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 27.5% | 18 | +60.0% |
| Systematic-like | 9.1% | 11 | +63.7% |
| Concentrated | 4.9% | 13 | +1.5% |
| Diversified active | 58.5% | 76 | +34.6% |
| Unknown | 0.0% | 0 | -100.0% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 40.0% | 64 | +49.5% |
| Medium turnover | 36.7% | 30 | +38.6% |
| High turnover | 12.6% | 18 | +11.4% |
| Unknown | 10.8% | 6 | +46.1% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 14.1% | 14 | +32.1% |
| Medium horizon | 22.6% | 16 | +157.1% |
| Long horizon | 50.0% | 80 | +36.7% |
| Unknown | 13.4% | 8 | -15.6% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 20.5% | 27 | -4.1% |
| $1B to $10B | 6.0% | 18 | +2.6% |
| $10B to $100B | 21.2% | 23 | +25.0% |
| $100B or more | 52.3% | 50 | +89.1% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 3.0% | 18 | -26.3% |
| Pooled investment vehicles | 14.3% | 16 | -7.5% |
| Registered funds and BDCs | 21.0% | 12 | +83.1% |
| Insurance companies | 0.1% | 2 | +59.0% |
| Governments and sovereign funds | 3.5% | 3 | +20.8% |
| Other investment advisers | 2.3% | 2 | +57.8% |
| Diversified | 9.3% | 5 | +18.3% |
| Unknown | 46.4% | 60 | +63.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 30.4% | 24 | -3.8% |
| Private equity funds | 0.3% | 3 | +399.1% |
| Real estate funds | 0.0% | 3 | +24.8% |
| Other private funds | 7.6% | 5 | +244.1% |
| Mixed private funds | 0.2% | 1 | new |
| No private funds | 15.9% | 24 | +41.0% |
| Unknown | 45.6% | 58 | +71.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 94.0% | 99 | +46.9% |
| Outside the US | 6.0% | 19 | -23.8% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-06-30 13F.
Conviction and Crowding
118 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 87.8% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies MPTI's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | ELMD Electromed, Inc. | 4 |
| 2 | TGEN Tecogen Inc. | 4 |
| 3 | SILC Silicom Ltd. | 3 |
| 4 | KOPN Kopin Corp | 5 |
| 5 | FEIM Frequency Electronics Inc | 4 |
| 6 | NPK National Presto Industries Inc | 3 |
| 7 | MAMA Mama's Creations, Inc. | 4 |
| 8 | BRZE Braze, Inc. | 3 |
| 9 | APPS Digital Turbine, Inc. | 3 |
| 10 | MEC Mayville Engineering Company, Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not MPTI, quarter ended Jun 30, 2026Found through its holder-overlap peers: ELMD, TGEN, SILC, KOPN, FEIM, NPK, MAMA, BRZE, APPS, MEC, VPG, BELFA, ALM, HROW, TPB, ATRO, SPXC, FROG, ZM, MOD. 1,553 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $1,175,583,221 7 held | ZM, MOD, SPXC |
| 2 | Jupiter Topco LLC Unknown, Diversified active | $865,856,193 12 held | SPXC, BELFA, MOD |
| 3 | Capital World Investors Adviser, Diversified active | $800,187,617 3 held | SPXC, MOD, ATRO |
| 4 | Capital International Investors Adviser, Diversified active | $736,833,834 2 held | SPXC, ATRO |
| 5 | JANE STREET GROUP, LLC Unknown, Diversified active | $642,135,274 15 held | MOD, SPXC, VPG |
| 6 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser, Diversified active | $501,056,112 3 held | FROG, MOD, ZM |
| 7 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US, Diversified active | $461,203,621 8 held | FROG, ZM, MOD |
| 8 | Driehaus Capital Management LLC Registered adviser, Diversified active | $457,752,949 9 held | MOD, FROG, ALM |
| 9 | WASATCH ADVISORS LP Registered adviser, Diversified active | $456,281,371 3 held | FROG, BELFA, MAMA |
| 10 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser, Diversified active | $451,161,757 9 held | ZM, FROG, APPS |
Fund Ownership of MPTI by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 11.50% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 2.82% | 122,507 |
| Index ETFs | 8.68% | 377,358 |
| Active ETFs | 0.25% | 10,692 |
| Active funds | 10.53% | 457,541 |
| Unclassified | 0.19% | 8,430 |
| All registered funds | 22.47% | 976,528 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega T. Rowe Price Investment Management, Inc. Adviser | $25,333,419 | 8.55% | 255,506 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $25,082,172 | 8.46% | 252,972 | Shares | 2026-08-07 | |
| Large GAMCO INVESTORS, INC. ET AL Registered adviser | $19,956,912 | 6.73% | 201,280 | Shares | 2026-08-12 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $17,167,624 | 5.79% | 173,148 | Shares | 2026-08-13 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $15,526,394 | 5.24% | 156,595 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $13,133,904 | 4.43% | 132,465 | Shares | 2026-08-14 | |
| Mid NEXT CENTURY GROWTH INVESTORS LLC Adviser | $12,311,752 | 4.15% | 124,173 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $9,979,049 | 3.37% | 100,646 | Shares | 2026-08-12 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $9,518,895 | 3.21% | 96,005 | Shares | 2026-08-13 | |
| Large WASATCH ADVISORS LP Registered adviser | $8,426,332 | 2.84% | 107,671 | Shares | 2026-10-13 | |
| Mega STATE STREET CORP Bank | $8,179,180 | 2.76% | 82,493 | Shares | 2026-09-22 | |
| Small Palisades Investment Partners, LLC Registered adviser | $8,159,648 | 2.75% | 82,296 | Shares | 2026-08-04 | |
| Small Congruence Capital, LLC Registered adviser | $6,613,403 | 2.23% | 66,701 | Shares | 2026-08-13 | |
| Small ADVISORY RESEARCH INC Registered adviser | $5,850,940 | 1.97% | 59,011 | Shares | 2026-08-13 | |
| Small HERALD INVESTMENT MANAGEMENT Ltd Non-US | $5,800,275 | 1.96% | 58,500 | Shares | 2026-07-23 | |
| Small Grandeur Peak Global Advisors, LLC Registered adviser | $5,619,921 | 1.90% | 56,681 | Shares | 2026-08-17 | |
| Mega D. E. Shaw & Co., Inc. | $4,808,080 | 1.62% | 48,493 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $4,727,569 | 1.59% | 47,681 | Shares | 2026-08-11 | |
| Small HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC | $4,640,616 | 1.57% | 46,804 | Shares | 2026-07-23 | |
| Small BARD ASSOCIATES INC Registered adviser | $4,419,908 | 1.49% | 44,578 | Shares | 2026-08-12 | |
| Small Aristides Capital LLC Registered adviser | $4,085,872 | 1.38% | 41,209 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $3,949,342 | 1.33% | 39,832 | Shares | 2026-08-13 | |
| Small Potrero Capital Research LLC Registered adviser | $3,783,663 | 1.28% | 38,161 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $3,139,089 | 1.06% | 31,660 | Shares | 2026-07-29 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $3,069,089 | 1.04% | 30,954 | Shares | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $3,032,304 | 1.02% | 30,583 | Shares | 2026-08-13 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $2,694,897 | 0.91% | 27,180 | Shares | 2026-08-13 | |
| Small MCINTYRE FREEDMAN & FLYNN INVESTMENT ADVISERS INC Registered adviser | $2,558,070 | 0.86% | 25,800 | Shares | 2026-08-12 | |
| Large Verition Fund Management LLC Registered adviser | $2,478,750 | 0.84% | 25,000 | Shares | 2026-08-14 | |
| Small Illumine Investment Management, LLC | $2,460,209 | 0.83% | 0 | Shares | 2026-07-29 | |
| Mega UBS Group AG Bank | $2,428,480 | 0.82% | 24,493 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $2,117,644 | 0.71% | 21,358 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $1,879,684 | 0.63% | 18,958 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $1,860,946 | 0.63% | 18,769 | Shares | 2026-08-14 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $1,711,130 | 0.58% | 17,258 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $1,699,727 | 0.57% | 17,143 | Shares | 2026-08-06 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $1,695,266 | 0.57% | 17,098 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $1,657,290 | 0.56% | 16,715 | Shares | 2026-08-11 | |
| Small Apis Capital Advisors, LLC Registered adviser | $1,586,400 | 0.54% | 16,000 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $1,454,232 | 0.49% | 14,667 | Shares | 2026-08-06 | |
| Mid XTX Topco Ltd | $1,442,434 | 0.49% | 14,548 | Shares | 2026-08-14 | |
| Mid Informed Momentum Co LLC Registered adviser | $1,439,261 | 0.49% | 14,516 | Shares | 2026-08-13 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $1,399,006 | 0.47% | 14,110 | Shares | 2026-08-14 | |
| Large OSAIC HOLDINGS, INC. Holding company | $1,299,261 | 0.44% | 13,104 | Shares | 2026-08-14 | |
| Small PLATINUM INVESTMENT MANAGEMENT LTD | $1,272,986 | 0.43% | 12,839 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $1,269,814 | 0.43% | 12,807 | Shares | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $1,265,451 | 0.43% | 12,763 | Shares | 2026-08-11 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $1,188,411 | 0.40% | 11,986 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $1,181,074 | 0.40% | 11,912 | Shares | 2026-08-14 | |
| Large Janney Montgomery Scott LLC Adviser | $1,167,788 | 0.39% | 11,778 | Shares | 2026-08-05 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,093,426 | 0.37% | 11,028 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO | $1,012,024 | 0.34% | 10,207 | Shares | 2026-08-14 | |
| Small Concorde Asset Management, LLC Registered adviser | $973,851 | 0.33% | 9,822 | Shares | 2026-08-18 | |
| Large Squarepoint Ops LLC Registered adviser | $936,769 | 0.32% | 9,448 | Shares | 2026-08-14 | |
| Large Marex Group plc | $923,879 | 0.31% | 9,318 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $912,080 | 0.31% | 9,199 | Shares | 2026-09-02 | |
| Small Archon Capital Management LLC Registered adviser | $885,706 | 0.30% | 8,933 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $880,352 | 0.30% | 8,879 | Shares | 2026-08-14 | |
| Mega TD Asset Management Inc | $849,913 | 0.29% | 8,572 | Shares | 2026-08-04 | |
| Mid GSA CAPITAL PARTNERS LLP Registered adviser | $727,066 | 0.25% | 7,333 | Shares | 2026-08-06 | |
| Mega AMERICAN CENTURY COMPANIES INC | $656,472 | 0.22% | 6,621 | Shares | 2026-08-12 | |
| Small CORSAIR CAPITAL MANAGEMENT, L.P. Registered adviser | $651,217 | 0.22% | 6,568 | Shares | 2026-08-14 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC Registered adviser | $538,781 | 0.18% | 5,434 | Shares | 2026-08-14 | |
| Large AVIVA PLC Insurer | $480,580 | 0.16% | 4,847 | Shares | 2026-08-13 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $469,772 | 0.16% | 4,738 | Shares | 2026-08-12 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $466,005 | 0.16% | 4,700 | Shares | 2026-08-14 | |
| Small Q Fund Management (Hong Kong) Ltd Exempt adviser | $464,081 | 0.16% | 5,930 | Shares | 2026-10-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $409,984 | 0.14% | 4,135 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $408,597 | 0.14% | 4,121 | Shares | 2026-08-07 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $369,034 | 0.12% | 3,722 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $340,381 | 0.11% | 3,433 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $290,212 | 0.10% | 2,927 | Shares | 2026-08-13 | |
| Mega ROYAL BANK OF CANADA Bank | $272,265 | 0.09% | 2,746 | Shares | 2026-08-14 | |
| Mid Numerai GP LLC Registered adviser | $264,730 | 0.09% | 2,670 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $252,733 | 0.09% | 2,549 | Shares | 2026-08-14 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $244,603 | 0.08% | 2,467 | Shares | 2026-08-13 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $244,404 | 0.08% | 2,465 | Shares | 2026-08-07 | |
| Micro Scheeler Financial LLC Registered adviser | $233,840 | 0.08% | 2,988 | Shares | 2026-10-13 | |
| Mega FRANKLIN RESOURCES INC Adviser | $220,707 | 0.07% | 2,226 | Shares | 2026-08-13 | |
| Small Onyx Bridge Wealth Group LLC Registered adviser | $217,171 | 0.07% | 2,775 | Shares | 2026-10-16 | |
| Mid UMB Bank, n.a. | $211,486 | 0.07% | 2,133 | Shares | 2026-08-13 | |
| Micro Worth Venture Partners, LLC Registered adviser | $210,098 | 0.07% | 2,119 | Shares | 2026-08-10 | |
| Large Vident Advisory, LLC Registered adviser | $210,098 | 0.07% | 2,119 | Shares | 2026-08-12 | |
| Mega CITIGROUP INC Bank | $194,433 | 0.07% | 1,961 | Shares | 2026-08-03 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $190,962 | 0.06% | 1,926 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $174,701 | 0.06% | 1,762 | Shares | 2026-08-12 | |
| Mid Quantbot Technologies LP Registered adviser | $143,866 | 0.05% | 1,451 | Shares | 2026-08-12 | |
| Large Police & Firemen's Retirement System of New Jersey | $122,351 | 0.04% | 1,234 | Shares | 2026-07-23 | |
| Small Truvestments Capital LLC | $95,977 | 0.03% | 968 | Shares | 2026-08-12 | |
| Mega JONES FINANCIAL COMPANIES LLLP | $84,674 | 0.03% | 854 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $83,286 | 0.03% | 840 | Shares | 2026-08-14 | |
| Small CALDWELL SUTTER CAPITAL, INC. Registered adviser | $71,784 | 0.02% | 724 | Shares | 2026-08-05 | |
| Mid State of Alaska, Department of Revenue | $67,694 | 0.02% | 865 | Shares | 2026-10-15 | |
| Mega Legal & General Group Plc | $40,155 | 0.01% | 405 | Shares | 2026-08-14 | |
| Mid Tower Research Capital LLC (TRC) | $39,759 | 0.01% | 401 | Shares | 2026-08-11 | |
| Large STRS OHIO Benefit plan | $39,660 | 0.01% | 400 | Shares | 2026-07-30 | |
| Mid Ameritas Investment Partners, Inc. Registered adviser | $37,677 | 0.01% | 380 | Shares | 2026-08-13 | |
| Mid BFSG, LLC Registered adviser | $29,745 | 0.01% | 300 | Shares | 2026-07-20 | |
| Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $29,546 | 0.01% | 298 | Shares | 2026-07-23 | |
| Mid IFP Advisors, Inc Registered adviser | $18,704 | 0.01% | 239 | Shares | 2026-10-16 |
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