Mesa Laboratories
MLAB
151 hedge funds and large institutions have $613M invested in Mesa Laboratories in 2025 Q1 according to their latest regulatory filings, with 17 funds opening new positions, 55 increasing their positions, 52 reducing their positions, and 20 closing their positions.
1.19% more ownership
Funds ownership: 93.99% → 95.18% (+1.2%)
6% more repeat investments, than reductions
Existing positions increased: 55 | Existing positions reduced: 52
3% less funds holding
Funds holding: 156 → 151 (-5)
9% less capital invested
Capital invested by funds: $673M → $613M (-$59.7M)
15% less first-time investments, than exits
New positions opened: 17 | Existing positions closed: 20
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Select Equity Group
New York
|
+$8.2M |
| 2 |
KCM
Kennedy Capital Management
St Louis,
Missouri
|
+$5.27M |
| 3 |
BP
BBR Partners
New York
|
+$3.76M |
| 4 |
CIC
Crawford Investment Counsel
Atlanta,
Georgia
|
+$3.57M |
| 5 |
Russell Investments Group
London,
United Kingdom
|
+$2.59M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$3.73M |
| 2 |
Morgan Stanley
New York
|
-$3.3M |
| 3 |
BlackRock
New York
|
-$2.28M |
| 4 |
RA
Royce & Associates
New York
|
-$2.19M |
| 5 |
Goldman Sachs
New York
|
-$1.99M |
MLAB Hedge Fund Activity: Q1 2025 in Review
151 of the 7,472 institutional investors tracked by Wall St. Rank reported a position in Mesa Laboratories (MLAB) for Q1 2025, worth a combined $613M — down 8.9% from $673M a quarter earlier.
Sellers outnumbered buyers: 20 funds closed out of MLAB and 17 opened new positions — a net loss of 3 holders — while 52 trimmed existing stakes and 55 added.
The largest buyer was Select Equity Group, adding an estimated $8.2M. The largest seller was Jane Street, cutting an estimated $3.73M.
- 151 institutional investors held Mesa Laboratories (MLAB) as of Q1 2025, down from 156 in Q4 2024.
- Funds reported $613M of Mesa Laboratories stock for Q1 2025, down 8.9% quarter-over-quarter.
- 17 funds opened new Mesa Laboratories positions in Q1 2025 and 20 closed out, a net change of -3 holders.
- The largest Mesa Laboratories buyer in Q1 2025 was Select Equity Group, an estimated $8.2M added.
- The largest Mesa Laboratories seller in Q1 2025 was Jane Street, an estimated $3.73M sold.
Based on aggregated 13F filings for Q1 2025.