Core Laboratories
CLB
191 hedge funds and large institutions have $848M invested in Core Laboratories in 2026 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 61 increasing their positions, 57 reducing their positions, and 18 closing their positions.
615% more call options, than puts
Call options by funds: $443K | Put options by funds: $62K
154% more capital inflows, than outflows
Capital inflows: $104M | Capital outflows: $40.9M
39% more first-time investments, than exits
New positions opened: 25 | Existing positions closed: 18
2.04% more ownership
Funds ownership: 107.7% → 109.73% (+2%)
2% more funds holding
Funds holding: 188 → 191 (+3)
7% more repeat investments, than reductions
Existing positions increased: 61 | Existing positions reduced: 57
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CWA Asset Management Group
Naples,
Florida
|
+$20M |
| 2 |
Heartland Advisors
Milwaukee,
Wisconsin
|
+$2.68M |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
+$2.2M |
| 4 |
VanEck Associates
New York
|
+$2.15M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$2.11M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Ariel Investments
Chicago,
Illinois
|
-$8.78M |
| 2 |
Hotchkis & Wiley Capital Management
Los Angeles,
California
|
-$6.64M |
| 3 |
Disciplined Growth Investors
Minneapolis,
Minnesota
|
-$4.11M |
| 4 |
EARNEST Partners
Atlanta,
Georgia
|
-$2.95M |
| 5 |
Renaissance Technologies
New York
|
-$2.38M |
CLB Hedge Fund Activity: Q1 2026 in Review
191 of the 8,219 institutional investors tracked by Wall St. Rank reported a position in Core Laboratories (CLB) for Q1 2026, worth a combined $848M — up 5.5% from $804M a quarter earlier.
Buyers outnumbered sellers: 25 funds opened new CLB positions and 18 closed out — a net gain of 7 holders — while 61 added to existing stakes and 57 trimmed.
The largest buyer was CWA Asset Management Group, adding an estimated $20M. The largest seller was Ariel Investments, cutting an estimated $8.78M.
- 191 institutional investors held Core Laboratories (CLB) as of Q1 2026, up from 188 in Q4 2025.
- Funds reported $848M of Core Laboratories stock for Q1 2026, up 5.5% quarter-over-quarter.
- 25 funds opened new Core Laboratories positions in Q1 2026 and 18 closed out, a net change of +7 holders.
- The largest Core Laboratories buyer in Q1 2026 was CWA Asset Management Group, an estimated $20M added.
- The largest Core Laboratories seller in Q1 2026 was Ariel Investments, an estimated $8.78M sold.
Based on aggregated 13F filings for Q1 2026.