# M-TRON INDS INC COM

M-TRON INDS INC COM is a security (CUSIP 55380K109) tracked across SEC portfolio filings. 103 institutional managers reported $161.8M on Form 13F as of 2026-06-30; 9 registered fund positions totaling $6.1M via N-PORT as of 2026-05-31.

## Summary

- Issuer: M-TRON INDS INC
- Class: COM
- CUSIP: 55380K109
- Asset category: EC
- 13F holders: 103
- 13F value: $161.8M
- 13F period: 2026-06-30
- N-PORT fund positions: 9
- N-PORT value: $6.1M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 103 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $25.1M | 252,972 |
| [GAMCO INVESTORS, INC. ET AL](https://search.stillhousedata.com/firm/104950) | GREENWICH, CT | $11.3M | 168,400 |
| STATE STREET CORP | BOSTON, MA | $8.2M | 82,493 |
| [Palisades Investment Partners, LLC](https://search.stillhousedata.com/firm/128173) | SANTA MONICA, CA | $8.2M | 82,296 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $7.6M | 143,581 |
| [NEXT CENTURY GROWTH INVESTORS LLC](https://search.stillhousedata.com/firm/108978) | PLYMOUTH, MN | $7.2M | 108,220 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $6.5M | 96,789 |
| HERALD INVESTMENT MANAGEMENT Ltd | LONDON, X0 | $5.8M | 58,500 |
| [BARD ASSOCIATES INC](https://search.stillhousedata.com/firm/104984) | CHICAGO, IL | $5.7M | 85,518 |
| [Archon Capital Management LLC](https://search.stillhousedata.com/firm/130499) | Seattle, WA | $5.2M | 78,233 |
| NOMURA HOLDINGS INC | TOKYO, M0 | $4.8M | 72,516 |
| [Aristides Capital LLC](https://search.stillhousedata.com/firm/162368) | LOUISVILLE, KY | $4.4M | 65,673 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $4.3M | 63,931 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $4.2M | 62,463 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $3.4M | 51,593 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $2.4M | 0.29% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $1.5M | 0.88% |
| [GRANDEUR PEAK GLOBAL REACH FUND](https://search.stillhousedata.com/fund/S000080372) | Grandeur Peak Global Trust | $914K | 109.07% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $699K | 0.94% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $284K | 0.59% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $106K | 0.02% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $89K | 0.03% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $25K | 0.61% |
| [TIAA Separate Account VA-1 - Stock Index Account](https://search.stillhousedata.com/fund/S000005098) | TIAA Separate Account VA-1 | $14K | 0.11% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55380K109.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.