# MESA LABS INC COM

MESA LABS INC COM is a security (CUSIP 59064R109) tracked across SEC portfolio filings. 170 institutional managers reported $456.3M on Form 13F as of 2026-06-30; 23 registered fund positions totaling $36.7M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MESA LABS INC
- Class: COM
- CUSIP: 59064R109
- Asset category: EC
- 13F holders: 170
- 13F value: $456.3M
- 13F period: 2026-06-30
- N-PORT fund positions: 23
- N-PORT value: $36.7M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 170 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Long Path Partners LP](https://search.stillhousedata.com/firm/299053) | Stamford, CT | $47.5M | 477,126 |
| BlackRock, Inc. | New York, NY | $34.8M | 393,851 |
| Boston Partners | BOSTON, MA | $26.4M | 265,149 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $25.3M | 321,899 |
| Select Equity Group, L.P. | NEW YORK, NY | $20.9M | 235,885 |
| [Ranger Investment Management, L.P.](https://search.stillhousedata.com/firm/124414) | DALLAS, TX | $17.9M | 202,903 |
| [Diamond Hill Capital Management, LLC (Investment Advisor)](https://search.stillhousedata.com/firm/110638) | COLUMBUS, OH | $15.5M | 155,771 |
| [AQR CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/111883) | Greenwich, CT | $15.1M | 170,562 |
| MORGAN STANLEY | NEW YORK, NY | $14.3M | 162,116 |
| [ROYCE & ASSOCIATES LP](https://search.stillhousedata.com/firm/107689) | New York, NY | $14.3M | 161,229 |
| [KENNEDY CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/105834) | ST LOUIS, MO | $12.6M | 142,343 |
| Russell Investments Group, Ltd. | Seattle, WA | $12.1M | 121,720 |
| [WASATCH ADVISORS LP](https://search.stillhousedata.com/firm/6081) | SALT LAKE CITY, UT | $11.5M | 115,668 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $11.3M | 128,002 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $11.0M | 124,630 |

## Top fund holders (N-PORT)

_Showing 15 of 23 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Keeley Gabelli Small Cap Dividend Fund](https://search.stillhousedata.com/fund/S000026907) | Keeley Funds, Inc. | $9.5M | 363.29% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $5.9M | 85.94% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $5.6M | 0.68% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $4.7M | 21.08% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $2.8M | 1.57% |
| Gabelli Dividend & Income Trust | Gabelli Dividend & Income Trust | $1.9M | 7.10% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $1.8M | 2.37% |
| [Russell Investments U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000089990) | Russell Investments Exchange Traded Funds | $889K | 180.09% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $787K | 1.63% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $749K | 0.34% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $710K | 7.20% |
| [Ranger Small Cap Fund](https://search.stillhousedata.com/fund/S000033849) | SPEND LIFE WISELY FUNDS INVESTMENT TRUST | $262K | 121.00% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $255K | 0.04% |
| [Keeley Dividend ETF](https://search.stillhousedata.com/fund/S000096300) | Gabelli ETFs Trust | $252K | 333.41% |
| [TIFF MULTI-ASSET FUND](https://search.stillhousedata.com/fund/S000006387) | TIFF Investment Program | $247K | 1.78% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/59064R109.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.