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Mesa Laboratories

158 hedge funds and large institutions have $372M invested in Mesa Laboratories in 2025 Q4 according to their latest regulatory filings, with 36 funds opening new positions, 54 increasing their positions, 44 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
158
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
Puts
Net Calls
Net Calls Change

Top Buyers

1 +$17.3M
2 +$7.53M
3 +$6.06M
4
Raymond James Financial
Raymond James Financial
Florida
+$4.03M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$3.33M

Top Sellers

1 -$28.6M
2 -$12.8M
3 -$9.84M
4
Morgan Stanley
Morgan Stanley
New York
-$6.04M
5
Comerica Bank
Comerica Bank
Texas
-$3.22M
Name Holding Trade Value Shares
Change
Change in
Stake
Citadel Advisors
26
Citadel Advisors
Florida
$4.59M
Jane Street
27
Jane Street
New York
$4.43M
Goldman Sachs
28
Goldman Sachs
New York
$4.34M
RC
29
Roubaix Capital
Colorado
$4.33M
Bank of America
30
Bank of America
North Carolina
$4.29M
HIM
31
Herald Investment Management
United Kingdom
$3.92M
TI
32
Trexquant Investment
Connecticut
$3.62M
Bank of New York Mellon
33
Bank of New York Mellon
New York
$3.51M
MCM
34
Monimus Capital Management
New Jersey
$3.21M
Jacobs Levy Equity Management
35
Jacobs Levy Equity Management
New Jersey
$3.05M
Qube Research & Technologies (QRT)
36
Qube Research & Technologies (QRT)
United Kingdom
$2.21M
Tudor Investment Corp
37
Tudor Investment Corp
Connecticut
$2.15M
BP
38
BBR Partners
New York
$1.98M
ICM
39
Irenic Capital Management
New York
$1.96M
State of Wisconsin Investment Board
40
State of Wisconsin Investment Board
Wisconsin
$1.77M
Franklin Resources
41
Franklin Resources
California
$1.73M
SBH
42
Segall Bryant & Hamill
Illinois
$1.43M
Luther King Capital Management (LKCM)
43
Luther King Capital Management (LKCM)
Texas
$1.37M
N
44
Numerai
California
$1.17M
Principal Financial Group
45
Principal Financial Group
Iowa
$1.17M
Connor, Clark & Lunn Investment Management (CC&L)
46
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$1.13M
RHJA
47
Rice Hall James & Associates
California
$1.12M
Ohio Public Employees Retirement System (OPERS)
48
Ohio Public Employees Retirement System (OPERS)
Ohio
$1.08M
QC
49
Quadrature Capital
United Kingdom
$1.06M
American Century Companies
50
American Century Companies
Missouri
$1.06M