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Mesa Laboratories
MLAB

Overview Fund Activity

152 hedge funds and large institutions have $488M invested in Mesa Laboratories in 2025 Q2 according to their latest regulatory filings, with 24 funds opening new positions, 47 increasing their positions, 53 reducing their positions, and 19 closing their positions.

Holders
152
Holders Change
–
Holders Change %
0%
% of All Funds
2.04%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
24
Increased
47
Reduced
53
Closed
19
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
GIM
1
Glenmede Investment Management
Pennsylvania
$13.4M
2
Renaissance Technologies
2
Renaissance Technologies
New York
$6.41M
3
Millennium Management
3
Millennium Management
New York
$5.44M
4
Janus Henderson Group
4
Janus Henderson Group
United Kingdom
$10.7M
5
Select Equity Group
5
Select Equity Group
New York
$9.63M

Top Sellers

1
Ameriprise
1
Ameriprise
Minnesota
$6.93M
2
Raymond James Financial
2
Raymond James Financial
Florida
$17.5M
3
BlackRock
3
BlackRock
New York
$74.5M
4
RA
4
Royce & Associates
New York
$23.3M
5
KCM
5
Kennedy Capital Management
Missouri
$8.52M
Name Market Value Shares Shares
Change 		Shares
Change %
HIM
51
Herald Investment Management
United Kingdom
$1.18M 12,500 – –
Swiss National Bank
52
Swiss National Bank
Switzerland
$980K 10,402 -200 -2%
Barclays
53
Barclays
United Kingdom
$958K 10,170 +3,472 +52%
D.E. Shaw & Co
54
D.E. Shaw & Co
New York
$816K 8,665 +8,665 New
Stifel Financial
55
Stifel Financial
Missouri
$781K 8,292 +4,902 +145%
Man Group
56
Man Group
United Kingdom
$741K 7,869 +2,859 +57%
AQR Capital Management
57
AQR Capital Management
Connecticut
$728K 7,727 -429 -5%
LPL Financial
58
LPL Financial
California
$668K 7,088 +106 +2%
Canada Life
59
Canada Life
Manitoba, Canada
$653K 6,927 – –
Creative Planning
60
Creative Planning
Kansas
$599K 6,353 -1,432 -18%
GCP
61
GSA Capital Partners
United Kingdom
$595K 6,312 +3,965 +169%
A
62
AlphaQuest
New York
$571K 6,056 +5,994 +9,668%
AllianceBernstein
63
AllianceBernstein
Tennessee
$533K 5,660 – –
Prudential Financial
64
Prudential Financial
New Jersey
$533K 5,658 +130 +2%
Citigroup
65
Citigroup
New York
$528K 5,609 -3,250 -37%
Boston Partners
66
Boston Partners
Massachusetts
$511K 5,421 +758 +16%
California State Teachers Retirement System (CalSTRS)
67
California State Teachers Retirement System (CalSTRS)
California
$475K 5,041 – –
JPMorgan Chase & Co
68
JPMorgan Chase & Co
New York
$475K 5,038 -20 -0.4%
CL
69
Choreo LLC
Illinois
$468K 4,971 +84 +2%
DTL
70
Dynamic Technology Lab
Singapore
$452K 4,801 +4,801 New
SEI Investments
71
SEI Investments
Pennsylvania
$411K 4,362 -1,054 -19%
Tudor Investment Corp
72
Tudor Investment Corp
Connecticut
$396K 4,202 +4,202 New
Deutsche Bank
73
Deutsche Bank
Germany
$383K 4,066 -637 -14%
TI
74
Trexquant Investment
Connecticut
$379K 4,020 +4,020 New
Thrivent Financial for Lutherans
75
Thrivent Financial for Lutherans
Minnesota
$377K 3,996 +5 +0.1%
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3
4 5