Core Laboratories Ownership | Who Owns Core Laboratories?

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Core Laboratories Ownership Summary

Core Laboratories is owned by 107.99% institutional investors, 1.43% insiders. Ariel investments is the largest institutional shareholder, holding 28.32% of CLB shares. Ariel Fund Investor is the top mutual fund, with 14.05% of its assets in Core Laboratories shares.

CLB Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Core Laboratories	107.99%	1.43%	-9.42%
Sector	Energy Stocks	44.25%	15.20%	40.55%
Industry	Oil & Gas Equipment & Services Stocks	43.51%	16.53%	39.96%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ariel investments	13.17M	28.32%	$221.13M
Blackrock	7.80M	16.62%	$158.22M
Blackrock funding, inc. /de	7.21M	15.50%	$121.03M
Disciplined growth investors inc /mn	4.94M	10.62%	$82.89M
Vanguard group	3.08M	6.62%	$49.37M
Earnest partners	3.06M	6.57%	$51.31M
State street	2.06M	4.43%	$34.60M
Cwa asset management group	1.76M	3.81%	$20.45M
Dimensional fund advisors lp	1.35M	2.91%	$22.71M
Geode capital management	1.14M	2.45%	$19.11M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Ariel investments	13.17M	2.48%	$221.13M
Disciplined growth investors inc /mn	4.94M	1.70%	$82.89M
Cwa asset management group	1.76M	0.62%	$20.45M
Earnest partners	3.06M	0.21%	$51.31M
Bwm planning	65.04K	0.18%	$757.66K
Ridgewood investments	31.43K	0.16%	$388.52K
Pacific ridge capital partners	44.43K	0.16%	$746.00K
Wintrust investments	10.14K	0.15%	$175.00K
Gendell jeffrey l	648.46K	0.15%	$10.89M
Scout investments	256.99K	0.14%	$5.21M

Top Buyers

Holder	Shares	% Assets	Change
Evergreen capital management	669.51K	0.14%	669.51K
Vanguard fiduciary trust	289.56K	0.00%	289.56K
Heartland advisors	150.00K	0.13%	150.00K
Dimensional fund advisors lp	1.35M	0.00%	122.72K
Van eck associates	472.47K	0.01%	120.44K

Top Sellers

Holder	Shares	% Assets	Change
Congress asset management co /ma	-	-	-1.69M
Boston trust walden	-	-	-610.89K
Fred alger management	-	-	-544.41K
Ariel investments	13.17M	2.48%	-490.61K
Hotchkis & wiley capital management	180.13K	0.01%	-370.98K

New Positions

Holder	Shares	% Assets	Change	Value
Evergreen capital management	669.51K	0.14%	669.51K	$7.80M
Vanguard fiduciary trust	289.56K	0.00%	289.56K	$4.86M
Heartland advisors	150.00K	0.13%	150.00K	$2.52M
Marshall wace, llp	117.74K	0.00%	117.74K	$1.98M
Norges bank	110.33K	0.00%	110.33K	$1.91M

Sold Out

Holder	Change
Tfc financial management	-1.00
Frazier financial advisors	-4.00
Southstate	-7.00
Ifp advisors	-8.00
Abound wealth management	-8.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	185	-1.07%	50,215,874	0.11%	107	0.93%	85	3.66%	54	-28.95%
Dec 31, 2025	100	-48.19%	16,685,248	-67.44%	35	0.31%	46	-50.54%	33	-54.79%
Sep 30, 2025	89	-52.41%	17,479,824	-65.96%	36	0.32%	39	-60.61%	36	-34.55%
Jun 30, 2025	193	-1.53%	52,138,632	2.56%	109	0.93%	97	29.33%	59	-23.38%
Mar 31, 2025	6	-97.13%	335,329	-99.34%	-	0.01%	2	-97.94%	4	-94.37%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Ariel Fund Investor	6.47M	14.05%	1.06M
iShares Core S&P Small-Cap ETF	2.77M	6.02%	480.00
Vanguard US Total Market Shares ETF	1.48M	3.18%	-
Ariel Appreciation Investor	1.43M	3.10%	-83.84K
iShares Russell 2000 ETF	1.22M	2.65%	7.26K
Harbor Small Cap Value Instl	1.12M	2.44%	-45.34K
Congress Asset Mgt Small Cap Growth	1.11M	2.38%	1.11M
Vanguard Total Stock Mkt Idx Inv	1.03M	2.24%	-34.50K
Disciplined Growth - Mid Cap Growth	1.01M	2.20%	-263.56K
Heartland Value Investor	901.72K	1.96%	301.72K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	-	-

CLB Ownership FAQ

Who Owns Core Laboratories?

Core Laboratories shareholders are primarily institutional investors at 107.99%, followed by 1.43% insiders and -9.42% retail investors. The average institutional ownership in Core Laboratories's industry, Oil & Gas Equipment & Services Stocks, is 43.51%, which Core Laboratories exceeds.

Who owns the most shares of Core Laboratories?

Core Laboratories’s largest shareholders are Ariel investments (13.17M shares, 28.32%), Blackrock (7.8M shares, 16.62%), and Blackrock funding, inc. /de (7.21M shares, 15.50%). Together, they hold 60.45% of Core Laboratories’s total shares outstanding.

Does Blackrock own Core Laboratories?

Yes, BlackRock owns 16.62% of Core Laboratories, totaling 7.8M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 158.22M$. In the last quarter, BlackRock decreased its holdings by -181K shares, a -2.27% change.

Who is Core Laboratories’s biggest shareholder by percentage of total assets invested?

Ariel investments is Core Laboratories’s biggest shareholder by percentage of total assets invested, with 2.48% of its assets in 13.17M Core Laboratories shares, valued at 221.13M$.

Who is the top mutual fund holder of Core Laboratories shares?

Ariel Fund Investor is the top mutual fund holder of Core Laboratories shares, with 14.05% of its total shares outstanding invested in 6.47M Core Laboratories shares.

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