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Mesa Laboratories

159 hedge funds and large institutions have $372M invested in Mesa Laboratories in 2025 Q4 according to their latest regulatory filings, with 35 funds opening new positions, 55 increasing their positions, 44 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed

192% more first-time investments, than exits

New positions opened: 35 | Existing positions closed: 12

25% more repeat investments, than reductions

Existing positions increased: 55 | Existing positions reduced: 44

13% more funds holding

Funds holding: 141159 (+18)

12% more capital invested

Capital invested by funds: $334M → $372M (+$38.5M)

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

4.68% less ownership

Funds ownership: 90.61%85.92% (-4.7%)

Holders
159
Holders Change
+18
Holders Change %
+12.77%
% of All Funds
1.93%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.02%
New
35
Increased
55
Reduced
44
Closed
12
Calls
Puts
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Citadel Advisors
26
Citadel Advisors
Florida
$4.59M +$1.85M +24,343 +71%
Jane Street
27
Jane Street
New York
$4.43M +$1.38M +18,144 +47%
Goldman Sachs
28
Goldman Sachs
New York
$4.34M +$1.03M +13,487 +32%
RC
29
Roubaix Capital
Colorado
$4.33M -$1.63M -21,468 -28%
Bank of America
30
Bank of America
North Carolina
$4.29M +$575K +7,565 +16%
HIM
31
Herald Investment Management
United Kingdom
$3.92M
TI
32
Trexquant Investment
Connecticut
$3.62M +$1.6M +21,031 +84%
Bank of New York Mellon
33
Bank of New York Mellon
New York
$3.51M +$844K +11,091 +33%
MCM
34
Monimus Capital Management
New Jersey
$3.21M +$540K +7,098 +21%
Jacobs Levy Equity Management
35
Jacobs Levy Equity Management
New Jersey
$3.05M +$2.66M +34,985 +907%
Qube Research & Technologies (QRT)
36
Qube Research & Technologies (QRT)
United Kingdom
$2.21M -$197K -2,595 -8%
Tudor Investment Corp
37
Tudor Investment Corp
Connecticut
$2.15M +$1.6M +21,085 +333%
BP
38
BBR Partners
New York
$1.98M
ICM
39
Irenic Capital Management
New York
$1.96M +$1.9M +25,000 New
State of Wisconsin Investment Board
40
State of Wisconsin Investment Board
Wisconsin
$1.77M +$319K +4,200 +23%
Franklin Resources
41
Franklin Resources
California
$1.73M +$1.68M +22,074 New
SBH
42
Segall Bryant & Hamill
Illinois
$1.43M -$6.39K -84 -0.5%
Luther King Capital Management (LKCM)
43
Luther King Capital Management (LKCM)
Texas
$1.37M -$191K -2,510 -13%
N
44
Numerai
California
$1.17M +$859K +11,299 +313%
Principal Financial Group
45
Principal Financial Group
Iowa
$1.17M +$367K +4,827 +48%
Connor, Clark & Lunn Investment Management (CC&L)
46
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$1.13M +$1.09M +14,369 New
RHJA
47
Rice Hall James & Associates
California
$1.12M -$223K -2,928 -17%
Ohio Public Employees Retirement System (OPERS)
48
Ohio Public Employees Retirement System (OPERS)
Ohio
$1.08M
QC
49
Quadrature Capital
United Kingdom
$1.06M +$1.03M +13,528 New
American Century Companies
50
American Century Companies
Missouri
$1.06M +$55.9K +735 +6%