Security record · archived quarter
MLAB
Mesa Laboratories, Inc. · Healthcare · Medical - Specialties
70Tracked holders
+2Δ holders
2.73MShares held
$214.06MReported value
+2New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +2.9% ·
share flow -2.7% ·
net new positions +2.9%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 67 | 0 | 2.99M | $297.50M | +4 | −4 |
| Q1 2026 | 70 | 0 | 2.66M | $235.21M | +6 | −6 |
| Q4 2025 | 70 | +2 | 2.73M | $214.06M | +2 | — |
| Q3 2025 | 17 | +1 | 1.54M | $103.48M | +2 | −1 |
| Q2 2025 | 13 | +4 | 1.73M | $163.31M | +4 | — |
| Q1 2025 | 6 | -3 | 383.09K | $45.46M | — | −3 |
| Q4 2024 | 9 | +1 | 400.64K | $52.84M | +1 | — |
| Q3 2024 | 7 | 0 | 174.94K | $22.72M | +1 | −1 |
| Q2 2024 | 7 | — | 189.52K | $16.45M | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 398.67K | +2.5% | $31.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 321.90K | +0.1% | $25.27M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 321.90K | +0.1% | $25.27M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | The Vanguard Group ✦ (passive) | 321.90K | +0.1% | $25.27M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | Boston Partners | 213.38K | — | $16.75M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 19 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 175.59K | -31.1% | $13.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Geode Capital Management ✦ (passive) | 127.95K | +0.1% | $10.05M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 28 | Geode Capital Management ✦ (passive) | 127.95K | +0.1% | $10.05M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 29 | State Street Global Advisors ✦ (passive) | 120.64K | +1.4% | $9.47M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | Janus Henderson Group Plc | 116.64K | — | $9.16M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Dimensional Fund Advisors Lp | 116.36K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Dimensional Fund Advisors Lp | 116.36K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Dimensional Fund Advisors Lp | 116.36K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Dimensional Fund Advisors Lp | 116.36K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Russell Investments Group, Ltd. | 116.34K | — | $9.13M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Raymond James Financial Inc | 100.40K | — | $7.89M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Raymond James Financial Inc | 100.40K | — | $7.89M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Raymond James Financial Inc | 100.40K | — | $7.89M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Raymond James Financial Inc | 100.40K | — | $7.89M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | D. E. Shaw & Co. ✦ | 76.56K | +133.3% | $6.01M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 53 | AQR Capital Management ✦ | 70.14K | +114.9% | $5.51M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 54 | AQR Capital Management ✦ | 70.14K | +114.9% | $5.51M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 55 | AQR Capital Management ✦ | 70.14K | +114.9% | $5.51M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 56 | AQR Capital Management ✦ | 70.14K | +114.9% | $5.51M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 57 | AQR Capital Management ✦ | 70.14K | +114.9% | $5.51M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 70.14K | +114.9% | $5.51M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 59 | Northern Trust Corp | 65.65K | — | $5.15M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Northern Trust Corp | 65.65K | — | $5.15M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Northern Trust Corp | 65.65K | — | $5.15M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Northern Trust Corp | 65.65K | — | $5.15M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Northern Trust Corp | 65.65K | — | $5.15M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Charles Schwab Investment… | 61.91K | — | $4.86M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Citadel Advisors ✦ | 58.52K | +71.2% | $4.59M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 66 | Citadel Advisors ✦ | 58.52K | +71.2% | $4.59M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 67 | Jane Street Group, Llc | 56.37K | — | $4.43M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Jane Street Group, Llc | 56.37K | — | $4.43M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | Goldman Sachs Group ✦ | 55.27K | +32.3% | $4.34M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Goldman Sachs Group ✦ | 55.27K | +32.3% | $4.34M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Bank Of America Corp /De/ | 54.66K | — | $4.29M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Bank Of America Corp /De/ | 54.66K | — | $4.29M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Bank Of America Corp /De/ | 54.66K | — | $4.29M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Bank Of America Corp /De/ | 54.66K | — | $4.29M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Bank Of America Corp /De/ | 54.66K | — | $4.29M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Bank of New York Mellon Corp | 44.77K | — | $3.51M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Bank of New York Mellon Corp | 44.77K | — | $3.51M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Bank of New York Mellon Corp | 44.77K | — | $3.51M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Bank of New York Mellon Corp | 44.77K | — | $3.51M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Bank of New York Mellon Corp | 44.77K | — | $3.51M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Qube Research & Technologies Ltd | 28.13K | — | $2.21M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Tudor Investment Corp Et Al | 27.43K | — | $2.15M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | State Of Wisconsin Investment Board | 22.61K | — | $1.77M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Franklin Resources Inc | 22.07K | — | $1.73M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Franklin Resources Inc | 22.07K | — | $1.73M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Franklin Resources Inc | 22.07K | — | $1.73M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Franklin Resources Inc | 22.07K | — | $1.73M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Principal Financial Group Inc | 14.89K | — | $1.17M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Principal Financial Group Inc | 14.89K | — | $1.17M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Connor, Clark & Lunn Investment… | 14.37K | — | $1.13M | 0.0% | n/c | 1 | SEC ↗ |
| 91 | American Century Companies Inc | 13.47K | — | $1.06M | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Point72 Asset Management ✦ | 13.46K | New | $1.06M | 0.0% | New | 1 | SEC ↗ |
| 93 | Man Group plc | 13.39K | — | $1.05M | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Invesco Ltd. | 12.85K | — | $1.01M | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Invesco Ltd. | 12.85K | — | $1.01M | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Invesco Ltd. | 12.85K | — | $1.01M | 0.0% | n/c | 1 | SEC ↗ |
| 97 | Creative Planning | 12.44K | — | $976,305 | 0.0% | n/c | 1 | SEC ↗ |
| 98 | Two Sigma Investments ✦ | 12.23K | +27.1% | $960,448 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 99 | Stifel Financial Corp | 11.28K | — | $885,111 | 0.0% | n/c | 1 | SEC ↗ |
| 100 | Stifel Financial Corp | 11.28K | — | $885,111 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $1.06M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 158 holders, 4.82M shares, $424.86M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Aug 13
Kadia Siddhartha
Officer · President and CEO · 7.09K sh @ 112.80 · $800,090
Aug 13
Tripeny R Tony
Director · 900 sh @ 113.69 · $102,321
Open-market sales (S)
Aug 13
Sullivan John James
Director · 7.09K sh · $800,090
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 07
SC 13G/A — Long Path Smaller Companies Fund, LP
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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