Security record · archived quarter
MLAB
Mesa Laboratories, Inc. · Healthcare · Medical - Specialties
70Tracked holders
0Δ holders
2.66MShares held
$235.21MReported value
+6New positions
−6Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +1.0% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
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 | n/a |
| Q3 2025 | 17 | +1 | 1.54M | $103.48M | +2 | −1 |
| Q2 2025 | 13 | +4 | 1.73M | $163.31M | +4 | n/a |
| Q1 2025 | 6 | -3 | 383.09K | $45.46M | n/a | −3 |
| Q4 2024 | 9 | +1 | 400.64K | $52.84M | +1 | n/a |
| Q3 2024 | 7 | 0 | 174.94K | $22.72M | +1 | −1 |
| Q2 2024 | 7 | n/a | 189.52K | $16.45M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 393.85K | -1.2% | $34.82M | 0.0% | ▼ Trim | 4 | SEC ↗ ×10 |
| 2 | Boston Partners | 268.71K | +25.9% | $23.76M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Vanguard Capital Management Llc | 232.64K | n/a | $20.57M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | AQR Capital Management ✦ | 170.56K | +143.2% | $15.08M | 0.0% | ▲ Add | 8 | SEC ↗ ×9 |
| 5 | Morgan Stanley ✦ | 162.12K | -7.7% | $14.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×9 |
| 6 | Russell Investments Group, Ltd. | 135.07K | +16.1% | $11.94M | 0.0% | ▲ Add | 2 | SEC ↗ ×14 |
| 7 | Geode Capital Management ✦ (passive) | 128.00K | 0.0% | $11.32M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 8 | Dimensional Fund Advisors Lp | 124.63K | +7.1% | $11.02M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 9 | State Street Global Advisors ✦ (passive) | 122.07K | +1.2% | $10.79M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 10 | Raymond James Financial Inc | 122.91K | +22.4% | $10.69M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 11 | Goldman Sachs Group ✦ | 70.62K | +27.8% | $6.24M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 12 | Janus Henderson Group Plc | 69.40K | -40.5% | $6.14M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | Northern Trust Corp | 69.26K | +5.5% | $6.12M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 14 | Charles Schwab Investment… | 62.42K | +0.8% | $5.52M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Bank Of America Corp /De/ | 57.87K | +5.9% | $5.12M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 16 | D. E. Shaw & Co. ✦ | 54.56K | -28.7% | $4.82M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 17 | Bank of New York Mellon Corp | 43.94K | -1.9% | $3.88M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 18 | Renaissance Technologies ✦ | 31.60K | +802.9% | $2.79M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 19 | Franklin Resources Inc | 21.55K | -2.4% | $1.91M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 20 | Lazard Asset Management Llc | 20.33K | New | $1.80M | 0.0% | New | 1 | SEC ↗ |
| 21 | State Of Wisconsin Investment Board | 19.01K | -15.9% | $1.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | Two Sigma Investments ✦ | 16.36K | +33.7% | $1.45M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | Point72 Asset Management ✦ | 16.31K | +21.2% | $1.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | Creative Planning | 14.99K | +20.6% | $1.33M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Invesco Ltd. | 14.10K | +9.8% | $1.25M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 26 | American Century Companies Inc | 13.37K | -0.7% | $1.18M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Royal Bank Of Canada | 13.28K | +143.3% | $1.17M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 28 | UBS Group AG | 12.05K | +36.5% | $1.07M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 29 | Stifel Financial Corp | 11.36K | +0.8% | $1.00M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 30 | Principal Financial Group Inc | 11.09K | -25.5% | $980,401 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 31 | Nuveen, LLC | 10.14K | +0.6% | $896,490 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 32 | Connor, Clark & Lunn Investment… | 9.52K | -33.8% | $841,493 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 33 | Mariner, LLC | 8.97K | +170.6% | $792,588 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Envestnet Asset Management Inc | 8.62K | +24.4% | $762,508 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Citadel Advisors ✦ | 8.42K | -85.6% | $744,762 | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 36 | GAMCO Investors ✦ | 7.83K | +1.0% | $692,682 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 37 | Sei Investments Co | 7.40K | -11.6% | $654,655 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 38 | Cerity Partners LLC | 7.25K | +115.6% | $640,613 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 39 | Tudor Investment Corp Et Al | 6.87K | -74.9% | $607,799 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Canada Pension Plan Investment Board | 6.80K | +83.8% | $601,256 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Rhumbline Advisers | 6.55K | -1.1% | $578,878 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | Fidelity (FMR) ✦ | 6.47K | +664.8% | $572,078 | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 43 | Cwm, Llc | 5.81K | +291.2% | $513,632 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 5.32K | +5.2% | $470,041 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Deutsche Bank Ag\ | 5.04K | +13.6% | $445,903 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 46 | Alliancebernstein L.P. | 5.30K | -2.2% | $416,207 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | LPL Financial LLC | 4.55K | -8.7% | $402,565 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | Quantinno Capital Management LP | 4.32K | +17.9% | $381,798 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | T. Rowe Price ✦ | 3.64K | +15.8% | $322,000 | 0.0% | ▲ Add | 8 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 3.69K | -10.1% | $313,653 | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 51 | Wealth Enhancement Advisory… | 3.22K | New | $293,642 | 0.0% | New | 1 | SEC ↗ |
| 52 | Squarepoint Ops LLC | 3.19K | +16.0% | $281,795 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Mercer Global Advisors Inc /Adv | 3.10K | New | $274,102 | 0.0% | New | 1 | SEC ↗ |
| 54 | State Board Of Administration Of… | 2.56K | 0.0% | $226,709 | 0.0% | Held | 2 | SEC ↗ |
| 55 | Man Group plc | 2.48K | -81.5% | $219,016 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Captrust Financial Advisors | 2.36K | New | $208,699 | 0.0% | New | 1 | SEC ↗ |
| 57 | New York State Common Retirement… | 2.14K | 0.0% | $189,484 | 0.0% | Held | 2 | SEC ↗ |
| 58 | Wells Fargo & Company/Mn | 1.92K | -66.7% | $169,403 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 59 | Us Bancorp \De\ | 1.46K | +9.3% | $129,182 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 60 | Bnp Paribas Financial Markets | 1.17K | -87.6% | $103,275 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | Barclays Plc | 1.00K | -87.8% | $88,597 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 62 | Legal & General Group Plc | 469 | -14.4% | $41,469 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | Citigroup Inc | 372 | +64.6% | $32,892 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 64 | California State Teachers… | 284 | -12.1% | $25,111 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | Pnc Financial Services Group, Inc. | 254 | -24.9% | $22,459 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 66 | Rockefeller Capital Management L.P. | 132 | +10.9% | $11,721 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Optiver Holding B.V. | 32 | New | $2,829 | 0.0% | New | 1 | SEC ↗ |
| 68 | Osaic Holdings, Inc. | 14 | 0.0% | $1,238 | 0.0% | Held | 2 | SEC ↗ |
| 69 | Jones Financial Companies Lllp | 11 | +450.0% | $903 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Fifth Third Bancorp | 4 | New | $336 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Lazard Asset Management Llc | $1.80M | 0.0% |
| Wealth Enhancement Advisory… | $293,642 | 0.0% |
| Mercer Global Advisors Inc… | $274,102 | 0.0% |
| Captrust Financial Advisors | $208,699 | 0.0% |
| Optiver Holding B.V. | $2,829 | 0.0% |
| Fifth Third Bancorp | $336 | 0.0% |
Exited
| Jane Street Group, Llc | $4.43M | was 0.0% |
| Qube Research & Technologies… | $2.21M | was 0.0% |
| Marshall Wace | $560,256 | was 0.0% |
| Arrowstreet Capital | $488,898 | was 0.0% |
| Millennium Management | $350,502 | was 0.0% |
| Balyasny Asset Management L.P. | $297,672 | was 0.0% |
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
Oct 09
SC 13G: WASATCH ADVISORS LP
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: Q1 2026 ·
Methodology ·
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