Jane Street’s Arqit Quantum ARQQ Stock Holding History

Jane Street’s Portfolio ARQQ Stock Details ARQQ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$240K	Sell	18,100 -36,100	-67%	-$680K	﹤0.01%	9721
2025 Q4	$1.19M	Sell	54,200 -5,500	-9%	-$190K	﹤0.01%	5786
2025 Q3	$2.31M	Buy	59,700 +41,800	+234%	+$1.45M	﹤0.01%	4664
2025 Q2	$663K	Sell	17,900 -3,200	-15%	-$68.6K	﹤0.01%	6409
2025 Q1	$292K	Buy	+21,100	New	+$415K	﹤0.01%	7851
2023 Q3	–	Sell	-892	Closed	-$27K	–	8583
2023 Q2	$27K	Sell	892 -300	-25%	-$9.06K	﹤0.01%	8321
2023 Q1	$41.7K	Buy	+1,192	New	+$56.4K	﹤0.01%	8499
2022 Q3	–	Sell	-1,892	Closed	-$298K	–	9650
2022 Q2	$298K	Sell	1,892 -5,536	-75%	-$1.15M	﹤0.01%	7616
2022 Q1	$2.89M	Sell	7,428 -10,096	-58%	-$4.07M	﹤0.01%	4030
2021 Q4	$10.5M	Buy	+17,524	New	+$9.76M	﹤0.01%	1827

Other funds holding ARQQ

Defiance ETFs New York $6.98B AUM

PCM

Penserra Capital Management Orinda, California $8.52B AUM 37.76% 1-Year Est. Return

Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return

KIG

Kessler Investment Group Columbus, Indiana $234M AUM 51.88% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Legal & General Group London, United Kingdom $432B AUM 29.4% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Tudor Investment Corp Stamford, Connecticut $53.9B AUM 29.12% 1-Year Est. Return

Jane Street's ARQQ Position: Q1 2026 in Review

Jane Street reduced its Arqit Quantum (ARQQ) stake by 50% in Q1 2026, selling an estimated $613K and leaving 33,199 shares worth $440K. The position accounts for ﹤0.01% of the portfolio, ranked #8360.

Jane Street first reported a position in ARQQ in Q3 2021 and has held it in 12 quarters since. The position peaked at $1.44M in Q4 2025. 57 funds tracked by Wall St. Rank hold ARQQ as of Q1 2026.

Jane Street held 33,199 shares of Arqit Quantum worth $440K as of Q1 2026.
Jane Street sold 32,576 Arqit Quantum shares in Q1 2026, an estimated $613K.
Arqit Quantum made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #8360 holding.
Jane Street first reported a position in Arqit Quantum in Q3 2021 and has held it in 12 quarters since.
Jane Street's Arqit Quantum position peaked at $1.44M in Q4 2025.
57 funds tracked by Wall St. Rank held Arqit Quantum as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.