Core Laboratories
CLB
195 hedge funds and large institutions have $762M invested in Core Laboratories in 2025 Q1 according to their latest regulatory filings, with 21 funds opening new positions, 56 increasing their positions, 77 reducing their positions, and 33 closing their positions.
0.33% more ownership
Funds ownership: 108.22% → 108.55% (+0.33%)
7% less funds holding
Funds holding: 209 → 195 (-14)
13% less capital invested
Capital invested by funds: $880M → $762M (-$118M)
27% less repeat investments, than reductions
Existing positions increased: 56 | Existing positions reduced: 77
34% less call options, than puts
Call options by funds: $321K | Put options by funds: $487K
36% less first-time investments, than exits
New positions opened: 21 | Existing positions closed: 33
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AI
Ariel Investments
Chicago,
Illinois
|
+$11.9M |
| 2 |
Hotchkis & Wiley Capital Management
Los Angeles,
California
|
+$6.71M |
| 3 |
FAM
Fred Alger Management
New York
|
+$3.02M |
| 4 |
Dimensional Fund Advisors
Austin,
Texas
|
+$2.09M |
| 5 |
RHJA
Rice Hall James & Associates
San Diego,
California
|
+$1.35M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$6.91M |
| 2 |
Morgan Stanley
New York
|
-$5.11M |
| 3 |
Raymond James Financial
St Petersburg,
Florida
|
-$3.29M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
-$2.92M |
| 5 |
CIM
Confluence Investment Management
St. Louis,
Missouri
|
-$2.36M |
CLB Hedge Fund Activity: Q1 2025 in Review
195 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Core Laboratories (CLB) for Q1 2025, worth a combined $762M — down 13% from $880M a quarter earlier.
Sellers outnumbered buyers: 33 funds closed out of CLB and 21 opened new positions — a net loss of 12 holders — while 77 trimmed existing stakes and 56 added.
The largest buyer was Ariel Investments, adding an estimated $11.9M. The largest seller was BlackRock, cutting an estimated $6.91M.
- 195 institutional investors held Core Laboratories (CLB) as of Q1 2025, down from 209 in Q4 2024.
- Funds reported $762M of Core Laboratories stock for Q1 2025, down 13% quarter-over-quarter.
- 21 funds opened new Core Laboratories positions in Q1 2025 and 33 closed out, a net change of -12 holders.
- The largest Core Laboratories buyer in Q1 2025 was Ariel Investments, an estimated $11.9M added.
- The largest Core Laboratories seller in Q1 2025 was BlackRock, an estimated $6.91M sold.
Based on aggregated 13F filings for Q1 2025.