MPTI M-tron Industries, Inc.
M-tron Industries, Inc. (MPTI) Institutional Ownership
What the institutions did with MPTI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| T. Rowe Price Investment Management, Inc. | 255.5K | 8.9% |
| BlackRock, Inc. | 253.0K | 8.8% |
| GAMCO INVESTORS, INC. ET AL | 201.3K | 7.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 173.1K | 6.0% |
| ROYCE & ASSOCIATES LP | 156.6K | 5.4% |
| TWO SIGMA INVESTMENTS, LP | 132.5K | 4.6% |
| NEXT CENTURY GROWTH INVESTORS LLC | 124.2K | 4.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 100.6K | 3.5% |
| RENAISSANCE TECHNOLOGIES LLC | 96.0K | 3.3% |
| STATE STREET CORP | 82.5K | 2.9% |
| Palisades Investment Partners, LLC | 82.3K | 2.9% |
| Congruence Capital, LLC | 66.7K | 2.3% |
| ADVISORY RESEARCH INC | 59.0K | 2.0% |
| HERALD INVESTMENT MANAGEMENT Ltd | 58.5K | 2.0% |
| Grandeur Peak Global Advisors, LLC | 56.7K | 2.0% |
| D. E. Shaw & Co., Inc. | 48.5K | 1.7% |
| DIMENSIONAL FUND ADVISORS LP | 47.7K | 1.7% |
| HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC | 46.8K | 1.6% |
| BARD ASSOCIATES INC | 44.6K | 1.5% |
| Aristides Capital LLC | 41.2K | 1.4% |
| NORTHERN TRUST CORP | 39.8K | 1.4% |
| Potrero Capital Research LLC | 38.2K | 1.3% |
| NEW YORK STATE COMMON RETIREMENT FUND | 31.7K | 1.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31.0K | 1.1% |
| BNP PARIBAS FINANCIAL MARKETS | 30.6K | 1.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | New | 0 | 255.5K | +255.5K |
| ROYCE & ASSOCIATES LP | Increased | 8.3K | 156.6K | +148.3K |
| BlackRock, Inc. | Increased | 141.7K | 253.0K | +111.2K |
| NOMURA HOLDINGS INC | Sold Out | 72.5K | 0 | -72.5K |
| TWO SIGMA INVESTMENTS, LP | Increased | 62.5K | 132.5K | +70.0K |
| Archon Capital Management LLC | Reduced | 78.2K | 8.9K | -69.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 116.8K | 173.1K | +56.4K |
| MARSHALL WACE, LLP | Sold Out | 51.6K | 0 | -51.6K |
| HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC | New | 0 | 46.8K | +46.8K |
| D. E. Shaw & Co., Inc. | Increased | 5.4K | 48.5K | +43.1K |
| BARD ASSOCIATES INC | Reduced | 85.5K | 44.6K | -40.9K |
| Cable Car Capital, LP | Sold Out | 40.0K | 0 | -40.0K |
| STATE STREET CORP | Increased | 44.3K | 82.5K | +38.2K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 63.9K | 100.6K | +36.7K |
| GAMCO INVESTORS, INC. ET AL | Increased | 168.4K | 201.3K | +32.9K |
| Verition Fund Management LLC | New | 0 | 25.0K | +25.0K |
| Aristides Capital LLC | Reduced | 65.7K | 41.2K | -24.5K |
| Congruence Capital, LLC | Increased | 42.3K | 66.7K | +24.4K |
| Invesco Ltd. | New | 0 | 19.0K | +19.0K |
| NEXT CENTURY GROWTH INVESTORS LLC | Increased | 108.2K | 124.2K | +16.0K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 2.2K | 17.3K | +15.0K |
| JANE STREET GROUP, LLC | Sold Out | 14.5K | 0 | -14.5K |
| Informed Momentum Co LLC | New | 0 | 14.5K | +14.5K |
| GOLDMAN SACHS GROUP INC | Increased | 5.1K | 18.8K | +13.7K |
| CITADEL ADVISORS LLC | Reduced | 22.8K | 9.2K | -13.6K |
| PLATINUM INVESTMENT MANAGEMENT LTD | New | 0 | 12.8K | +12.8K |
| Qube Research & Technologies Ltd | New | 0 | 12.0K | +12.0K |
| RAYMOND JAMES FINANCIAL INC | New | 0 | 11.9K | +11.9K |
| NORTHERN TRUST CORP | Increased | 28.4K | 39.8K | +11.4K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 19.8K | 31.0K | +11.1K |
| OSAIC HOLDINGS, INC. | Increased | 2.5K | 13.1K | +10.6K |
| Q Fund Management (Hong Kong) Ltd | New | 0 | 10.0K | +10.0K |
| Squarepoint Ops LLC | New | 0 | 9.4K | +9.4K |
| TD Asset Management Inc | New | 0 | 8.6K | +8.6K |
| ADVISORY RESEARCH INC | Increased | 50.5K | 59.0K | +8.5K |
| SEI INVESTMENTS CO | Reduced | 18.4K | 10.2K | -8.2K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 22.4K | 30.6K | +8.2K |
| ExodusPoint Capital Management, LP | Reduced | 21.9K | 14.1K | -7.8K |
| GSA CAPITAL PARTNERS LLP | New | 0 | 7.3K | +7.3K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 7.3K | 0 | -7.3K |
| Nuveen, LLC | Increased | 10.1K | 16.7K | +6.6K |
| Potrero Capital Research LLC | Increased | 31.8K | 38.2K | +6.4K |
| Bank of New York Mellon Corp | Increased | 11.1K | 17.1K | +6.1K |
| Grandeur Peak Global Advisors, LLC | Increased | 50.8K | 56.7K | +5.8K |
| HRT FINANCIAL LP | Sold Out | 5.7K | 0 | -5.7K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 21.6K | 27.2K | +5.6K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Sold Out | 5.1K | 0 | -5.1K |
| AVIVA PLC | New | 0 | 4.8K | +4.8K |
| ALLIANCEBERNSTEIN L.P. | New | 0 | 4.7K | +4.7K |
| MCINTYRE FREEDMAN & FLYNN INVESTMENT ADVISERS INC | Increased | 21.5K | 25.8K | +4.3K |
| MORGAN STANLEY | Increased | 17.1K | 21.4K | +4.2K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 8.7K | 12.8K | +4.1K |
| Apis Capital Advisors, LLC | Increased | 12.0K | 16.0K | +4.0K |
| XTX Topco Ltd | Increased | 10.6K | 14.5K | +3.9K |
| BANK OF AMERICA CORP /DE/ | Increased | 5.3K | 8.9K | +3.5K |
| HERALD INVESTMENT MANAGEMENT Ltd | Increased | 55.0K | 58.5K | +3.5K |
| PRICE T ROWE ASSOCIATES INC /MD/ | New | 0 | 3.4K | +3.4K |
| Marex Group plc | Increased | 5.9K | 9.3K | +3.4K |
| CANADA PENSION PLAN INVESTMENT BOARD | Sold Out | 3.2K | 0 | -3.2K |
| UBS Group AG | Increased | 21.3K | 24.5K | +3.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.