HA
CLB icon

Heartland Advisors’s Core Laboratories CLB Stock Holding History

Heartland Advisors’s Portfolio CLB Stock Details CLB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$12.3M Buy
1,058,311
+908,311
+606% +$13M 0.55% 59
2026
Q1 		$2.52M Buy
+150,000
New +$2.68M 0.13% 195

Other funds holding CLB

AI
Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
DGI
Disciplined Growth Investors Minneapolis, Minnesota $5.91B AUM 53.97% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
CAMG
CWA Asset Management Group Naples, Florida $3.28B AUM 34.07% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Schroder Investment Management Group
Schroder Investment Management Group London, United Kingdom $141B AUM 34.18% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Heartland Advisors's CLB Position: Q2 2026 in Review

Heartland Advisors increased its Core Laboratories (CLB) stake by 606% in Q2 2026, buying an estimated $13M and bringing the position to 1,058,311 shares worth $12.3M. The position accounts for 0.55% of the portfolio, ranked #59.

Heartland Advisors first reported a position in CLB in Q1 2026 and has held it in 2 quarters since. 186 funds tracked by Wall St. Rank hold CLB as of Q2 2026.

  • Heartland Advisors held 1,058,311 shares of Core Laboratories worth $12.3M as of Q2 2026.
  • Heartland Advisors bought 908,311 Core Laboratories shares in Q2 2026, an estimated $13M.
  • Core Laboratories made up 0.55% of Heartland Advisors's portfolio in Q2 2026, its #59 holding.
  • Heartland Advisors first reported a position in Core Laboratories in Q1 2026 and has held it in 2 quarters since.
  • 186 funds tracked by Wall St. Rank held Core Laboratories as of Q2 2026.

Based on Heartland Advisors's 13F filing for Q2 2026, filed 11 Aug 2026.