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

Clear 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 Q1	$109K	Sell	10,000 -64,658	-87%	-$709K	﹤0.01%	610
2025 Q4	$784K	Buy	74,658 +36,892	+98%	+$392K	﹤0.01%	327
2025 Q3	$475K	Buy	37,766 +18,572	+97%	+$199K	﹤0.01%	291
2025 Q2	$198K	Sell	19,194 -147,323	-88%	-$1.51M	﹤0.01%	213
2025 Q1	$1.68M	Buy	+166,517	New	+$1.67M	0.01%	56

Other funds holding ATIIU

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

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

Clear Street's ATIIU Position: Q1 2026 in Review

Clear Street reduced its Archimedes Tech SPAC Partners II Co Unit (ATIIU) stake by 87% in Q1 2026, selling an estimated $709K and leaving 10,000 shares worth $109K. The position accounts for ﹤0.01% of the portfolio, ranked #610.

Clear Street first reported a position in ATIIU in Q1 2025 and has held it in 5 quarters since. The position peaked at $1.68M in Q1 2025. 5 funds tracked by Wall St. Rank hold ATIIU as of Q1 2026.

Clear Street held 10,000 shares of Archimedes Tech SPAC Partners II Co Unit worth $109K as of Q1 2026.
Clear Street sold 64,658 Archimedes Tech SPAC Partners II Co Unit shares in Q1 2026, an estimated $709K.
Archimedes Tech SPAC Partners II Co Unit made up ﹤0.01% of Clear Street's portfolio in Q1 2026, its #610 holding.
Clear Street first reported a position in Archimedes Tech SPAC Partners II Co Unit in Q1 2025 and has held it in 5 quarters since.
Clear Street's Archimedes Tech SPAC Partners II Co Unit position peaked at $1.68M in Q1 2025.
5 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co Unit as of Q1 2026.

Based on Clear Street's 13F filing for Q1 2026, filed 15 May 2026.