Jane Street’s Core Laboratories CLB Stock Holding History

Jane Street’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
2024 Q2	–	Sell	-31,500	Closed	-$538K	–	9448
2024 Q1	$538K	Buy	+31,500	New	+$495K	﹤0.01%	6535
2022 Q2	–	Sell	-6,800	Closed	-$215K	–	9754
2022 Q1	$215K	Sell	6,800 -7,900	-54%	-$221K	﹤0.01%	8934
2021 Q4	$328K	Buy	+14,700	New	+$383K	﹤0.01%	8007
2021 Q3	–	Sell	-8,500	Closed	-$331K	–	9982
2021 Q2	$331K	Buy	8,500 +500	+6%	+$17.9K	﹤0.01%	7974
2021 Q1	$230K	Buy	+8,000	New	+$273K	﹤0.01%	8077
2020 Q3	–	Sell	-18,000	Closed	-$366K	–	7192
2020 Q2	$366K	Buy	18,000 +7,200	+67%	+$129K	﹤0.01%	5538
2020 Q1	$112K	Buy	10,800 +1,800	+20%	+$50.3K	﹤0.01%	4901
2019 Q4	$339K	Buy	+9,000	New	+$404K	﹤0.01%	4143
2018 Q4	–	Sell	-2,400	Closed	-$278K	–	5001
2018 Q3	$278K	Sell	2,400 -300	-11%	-$33.8K	﹤0.01%	4309
2018 Q2	$341K	Buy	+2,700	New	+$329K	﹤0.01%	3992
2016 Q4	–	Sell	-6,700	Closed	-$753K	–	4056
2016 Q3	$753K	Buy	+6,700	New	+$772K	﹤0.01%	2301

Other funds holding CLB

Ariel Investments Chicago, Illinois $9.6B AUM 22.21% 1-Year Est. Return

BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return

EARNEST Partners Atlanta, Georgia $25.4B AUM 35.48% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

GJL

Gendell Jeffrey L $9.6B AUM 75.6% 1-Year Est. Return

Heartland Advisors Milwaukee, Wisconsin $2.08B AUM 27.45% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return

Jane Street's CLB Position: Q3 2026 in Review

Jane Street opened a new position in Core Laboratories (CLB) in Q3 2026: 257,515 shares worth $2.5M. The stake represents ﹤0.01% of the portfolio and ranks #4771 among its holdings. This is a return to the name: Jane Street previously reported a position in CLB as recently as Q3 2025.

Jane Street first reported a position in CLB in Q4 2015 and has held it in 32 quarters since. The position peaked at $6.62M in Q2 2020. 131 funds tracked by Wall St. Rank hold CLB as of Q3 2026.

Jane Street held 257,515 shares of Core Laboratories worth $2.5M as of Q3 2026.
Core Laboratories was a new Jane Street position in Q3 2026.
Core Laboratories made up ﹤0.01% of Jane Street's portfolio in Q3 2026, its #4771 holding.
Jane Street first reported a position in Core Laboratories in Q4 2015 and has held it in 32 quarters since.
Jane Street's Core Laboratories position peaked at $6.62M in Q2 2020.
131 funds tracked by Wall St. Rank held Core Laboratories as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.