AI summary pending
View Full Filing (SEC EDGAR)Core Laboratories Inc
$10.15+1.5%
+$47.6M
Net Activity
+6.32% total shares
Institutions Holding
188
Popularity Rank
#3166
Avg Weight
0.04%
Total Value
$670.5M
188 institutions currently hold CLB, with 93 net buyers and 102 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
102
Net Buying Institutions
93
Top 5 by Value
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Across its top 20 institutional holders, CLB's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 10/100, avg. turnover score 34/100).
CLB ranks #3166 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
188 institutions disclose a position in CLB, but none treat it as a major bet — even Ariel Investments, LLC, its most concentrated holder, allocates just 1.6% of its own portfolio to it.
Farther Finance Advisors, LLC has trimmed its CLB position for two straight quarters, cutting it by $89.9K while still holding $134.9K.
CLB is up 1.5% today, and institutions have been net buyers of $47.6M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
CLB posted net income of $24.4M over the trailing twelve months.
+$141.8M
Total Buy Value
$56.0M
Total Sell Value
93
Net Buyers
102
Net Sellers
CLB
Q2 2026
Top 5 Institutional Movers
-$57.2M
-$47.5M
-$34.1M
-$17.0M
CLB does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
3
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Ariel Investments, LLC | 13G/A | 2026-08-14 | 30.5% |
| DISCIPLINED GROWTH INVESTORS INC /MN | 13G/A | 2026-08-14 | 6.6% |
| BlackRock, Inc. | 13G/A | 2026-08-06 | 8.3% |
2
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)21867A105, 2182531 , N22717107, n22717107
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,716
Total reported value
$473.6B
Held by 4716 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,662
Total reported value
$986.0B
Held by 4662 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,610
Total reported value
$529.1B
Held by 4610 institutions — one of the most-tracked stocks on AlphaSMO
Access CLB's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/CLBCLI
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