13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
MLAB

MESA LABS INC

171 institutions still hold MESA LABS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 59064r109·171 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 4.8%
vs prior quarter
13F value held
$308M
64.0% inst. owned
of float
Holders
171
+133 QoQ
filers reporting
Activity
+9 / −31
+957 added · −883 reduced
this quarter
Concentration
11.66%
Long Path Partners LP #1
top holder share
AI Holders Summary · Q1 2026

171 institutions reported MLAB in Q1 2026. Long Path Partners LP leads at 11.7% of the visible book. +133 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Long Path Partners LP
CIK 0001905112
$36M406K16.29%Q1 202602
BlackRock, Inc.
CIK 0002012383
$35M394K0.00%Q1 202603
Boston Partners
CIK 0001386060
$24M269K0.02%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$21M233K0.00%Q1 202605
Ranger Investment Management, L.P.
CIK 0001319691
$18M203K1.30%Q1 202606
Select Equity Group, L.P.
CIK 0001592643
$16M206K0.07%Q4 202507
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$15M171K0.01%Q1 202608
MORGAN STANLEY
CIK 0000895421
$14M162K0.00%Q1 202609
ROYCE & ASSOCIATES LP
CIK 0000906304
$14M161K0.14%Q1 202610
DIAMOND HILL CAPITAL MANAGEMENT INC
CIK 0001217541
$14M155K0.09%Q1 202611
KENNEDY CAPITAL MANAGEMENT LLC
CIK 0000884589
$13M142K0.27%Q1 202612
Russell Investments Group, Ltd.
CIK 0001692234
$12M135K0.01%Q1 202613
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$11M128K0.00%Q1 202614
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$11M125K0.00%Q1 202615
STATE STREET CORP
CIK 0000093751
$11M122K0.00%Q1 202616
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$11M123K0.00%Q1 202617
Kent Lake PR LLC
CIK 0002037231
$9M135K4.55%Q3 202518
MONIMUS CAPITAL MANAGEMENT, LP
CIK 0001848831
$9M101K2.48%Q1 202619
CRAWFORD INVESTMENT COUNSEL INC
CIK 0000837592
$8M96K0.14%Q1 202620
GOLDMAN SACHS GROUP INC
CIK 0000886982
$6M71K0.00%Q1 2026
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