Jane Street’s Archimedes Tech SPAC Partners II Co Unit ATIIU Stock Holding History

Jane Street’s Portfolio ATIIU Stock Details ATIIU Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$533K	Sell	45,049 -1,011	-2%	-$12.5K	﹤0.01%	7865
2026 Q1	$502K	Hold	46,060	–	–	﹤0.01%	8024
2025 Q4	$488K	Sell	46,060 -11	-0%	-$117	﹤0.01%	7734
2025 Q3	$579K	Sell	46,071 -589	-1%	-$6.31K	﹤0.01%	7538
2025 Q2	$481K	Sell	46,660 -18,450	-28%	-$189K	﹤0.01%	6995
2025 Q1	$657K	Buy	+65,110	New	+$654K	﹤0.01%	6362

Other funds holding ATIIU

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Clear Street New York $39.5B AUM 124.03% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Jane Street's ATIIU Position: Q2 2026 in Review

Jane Street reduced its Archimedes Tech SPAC Partners II Co Unit (ATIIU) stake by 2.2% in Q2 2026, selling an estimated $12.5K and leaving 45,049 shares worth $533K. The position accounts for ﹤0.01% of the portfolio, ranked #7865.

Jane Street first reported a position in ATIIU in Q1 2025 and has held it in 6 quarters since. The position peaked at $657K in Q1 2025. 4 funds tracked by Wall St. Rank hold ATIIU as of Q2 2026.

Jane Street held 45,049 shares of Archimedes Tech SPAC Partners II Co Unit worth $533K as of Q2 2026.
Jane Street sold 1,011 Archimedes Tech SPAC Partners II Co Unit shares in Q2 2026, an estimated $12.5K.
Archimedes Tech SPAC Partners II Co Unit made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #7865 holding.
Jane Street first reported a position in Archimedes Tech SPAC Partners II Co Unit in Q1 2025 and has held it in 6 quarters since.
Jane Street's Archimedes Tech SPAC Partners II Co Unit position peaked at $657K in Q1 2025.
4 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co Unit as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.