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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 %
Diamond Hill Capital Management
26
Diamond Hill Capital Management
Ohio
$3.66M 38,799 +9,341 +32%
Royal Bank of Canada
27
Royal Bank of Canada
Ontario, Canada
$3.51M 37,278 +6,506 +21%
MIM
28
Meros Investment Management
Texas
$3.45M 36,618 +4,654 +15%
UBS Group
29
UBS Group
Switzerland
$2.95M 31,294 +3,907 +14%
Principal Financial Group
30
Principal Financial Group
Iowa
$2.81M 29,778 -13,881 -32%
Goldman Sachs
31
Goldman Sachs
New York
$2.77M 29,426 +14,092 +92%
Citadel Advisors
32
Citadel Advisors
Florida
$2.53M 26,873 +20,791 +342%
RHJA
33
Rice Hall James & Associates
California
$2.39M 25,346 -2,029 -7%
BP
34
BBR Partners
New York
$2.37M 25,195 -2,400 -9%
GF
35
Gabelli Funds
New York
$2.37M 25,156 +25,156 New
Wellington Management Group
36
Wellington Management Group
Massachusetts
$2.12M 22,471 +22,471 New
Envestnet Asset Management
37
Envestnet Asset Management
Illinois
$1.93M 20,483 +1,425 +7%
Luther King Capital Management (LKCM)
38
Luther King Capital Management (LKCM)
Texas
$1.88M 19,921 – –
Qube Research & Technologies (QRT)
39
Qube Research & Technologies (QRT)
United Kingdom
$1.87M 19,898 +16,190 +437%
Public Sector Pension Investment Board (PSP Investments)
40
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$1.75M 18,528 +1,272 +7%
SBH
41
Segall Bryant & Hamill
Illinois
$1.72M 18,287 -1,723 -9%
Wells Fargo
42
Wells Fargo
California
$1.71M 18,143 -11,876 -40%
Invesco
43
Invesco
Georgia
$1.68M 17,795 -134 -0.7%
UBS AM
44
UBS AM
Illinois
$1.64M 17,403 -2,574 -13%
NL
45
Nuveen LLC
North Carolina
$1.5M 15,924 -3,500 -18%
Legal & General Group
46
Legal & General Group
United Kingdom
$1.38M 14,657 +746 +5%
Jane Street
47
Jane Street
New York
$1.3M 13,785 +6,766 +96%
Ohio Public Employees Retirement System (OPERS)
48
Ohio Public Employees Retirement System (OPERS)
Ohio
$1.29M 13,722 – –
American Century Companies
49
American Century Companies
Missouri
$1.27M 13,431 +194 +1%
RhumbLine Advisers
50
RhumbLine Advisers
Massachusetts
$1.21M 12,793 -835 -6%
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