Who owns MESA LABORATORIES INC /CO/?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MLAB from SEC Form 13F filings across 159 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 159 institutions disclosed 5.0M shares of MESA LABORATORIES INC /CO/ worth $500.8M — about 88.9% of shares outstanding; the largest disclosed holder is Long Path Partners LP. Source: SEC Form 13F filings, parsed by EvidInvest.
159
13F holders
$500.8M
value, 2026 filers
88.9%
of shares outstanding (5.0M sh)
23
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MLAB's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Long Path Partners LP | 477,126 | $47.5M | 20.2% | 8.4% | +17.6% |
| 2 | BlackRock, Inc. | 440,552 | $43.9M | 0.0% | 7.8% | +11.9% |
| 3 | Boston Partners | 265,149 | $26.4M | 0.0% | 4.7% | -1.3% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 237,457 | $23.6M | 0.0% | 4.2% | +2.1% |
| 5 | AQR CAPITAL MANAGEMENT LLC | 203,739 | $20.3M | 0.0% | 3.6% | +19.5% |
| 6 | Ranger Investment Management, L.P. | 173,988 | $17.3M | 1.1% | 3.1% | -14.3% |
| 7 | MORGAN STANLEY | 156,979 | $15.6M | 0.0% | 2.8% | -3.2% |
| 8 | Diamond Hill Capital Management, LLC (Investment Advisor) | 155,771 | $15.5M | 0.1% | 2.8% | +0.3% |
| 9 | RAYMOND JAMES FINANCIAL INC | 149,937 | $14.9M | 0.0% | 2.7% | +22.0% |
| 10 | DIMENSIONAL FUND ADVISORS LP | 148,395 | $14.8M | 0.0% | 2.6% | +19.1% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 139,682 | $13.9M | 0.0% | 2.5% | +9.1% |
| 12 | KENNEDY CAPITAL MANAGEMENT LLC | 138,301 | $13.8M | 0.2% | 2.4% | -2.8% |
| 13 | JACOBS LEVY EQUITY MANAGEMENT, INC | 130,838 | $13.0M | 0.0% | 2.3% | +194.6% |
| 14 | STATE STREET CORP | 124,292 | $12.4M | 0.0% | 2.2% | +1.8% |
| 15 | Russell Investments Group, Ltd. | 121,845 | $12.1M | 0.0% | 2.2% | -9.8% |
| 16 | WASATCH ADVISORS LP | 115,668 | $11.5M | 0.1% | 2% | +125.8% |
| 17 | ROYCE & ASSOCIATES LP | 113,395 | $11.3M | 0.1% | 2% | -29.7% |
| 18 | CRAWFORD INVESTMENT COUNSEL INC | 98,805 | $9.8M | 0.2% | 1.7% | +3.4% |
| 19 | FMR LLC | 88,857 | $8.8M | 0.0% | 1.6% | +1273.4% |
| 20 | D. E. Shaw & Co., Inc. | 81,755 | $8.1M | 0.0% | 1.4% | +49.8% |
| 21 | JANE STREET GROUP, LLCNEW | 71,580 | $7.1M | 0.0% | 1.3% | new |
| 22 | VANGUARD PORTFOLIO MANAGEMENT LLC | 69,350 | $6.9M | 0.0% | 1.2% | +31.9% |
| 23 | Meros Investment Management, LP | 67,962 | $6.8M | 2.1% | 1.2% | -0.1% |
| 24 | NORTHERN TRUST CORP | 65,745 | $6.5M | 0.0% | 1.2% | -5.1% |
| 25 | GOLDMAN SACHS GROUP INC | 64,322 | $6.4M | 0.0% | 1.1% | -8.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.