Westchester Capital Management (New York)’s Archimedes Tech SPAC Partners II Co Warrant ATIIW Stock Holding History

Westchester Capital Management (New York)’s Portfolio ATIIW Stock Details ATIIW Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-199,999	Closed	-$102K	–	353
2026 Q1	$102K	Hold	199,999	–	–	﹤0.01%	247
2025 Q4	$110K	Hold	199,999	–	–	﹤0.01%	241
2025 Q3	$70K	Hold	199,999	–	–	﹤0.01%	219
2025 Q2	$77.1K	Buy	+199,999	New	+$61.7K	﹤0.01%	163

Other funds holding ATIIW

HCI

Harraden Circle Investments New York $784M AUM 20.59% 1-Year Est. Return

Aristeia Capital Greenwich, Connecticut $7.69B AUM 15.48% 1-Year Est. Return

TCM

Tenor Capital Management New York $7.09B AUM 3.55% 1-Year Est. Return

LMR Partners London, United Kingdom $26.8B AUM 68.38% 1-Year Est. Return

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund Toronto, Ontario, Canada $71.2B AUM 48.86% 1-Year Est. Return

Linden Advisors New York $19.3B AUM 1.47% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return

Magnetar Financial Evanston, Illinois $11B AUM 3.37% 1-Year Est. Return

AIMCA

Alberta Investment Management Corp (AIMCo) Edmonton, Alberta, Canada $17.9B AUM 27.56% 1-Year Est. Return

DAM

Decagon Asset Management London, United Kingdom $525M AUM 50.51% 1-Year Est. Return

Westchester Capital Management (New York)'s ATIIW Position: Q2 2026 in Review

Westchester Capital Management (New York) sold out of Archimedes Tech SPAC Partners II Co Warrant (ATIIW) in Q2 2026, closing a stake of 199,999 shares — an estimated $102K sold.

Westchester Capital Management (New York) first reported a position in ATIIW in Q2 2025 and held it in 4 quarters. The position peaked at $110K in Q4 2025. 32 funds tracked by Wall St. Rank hold ATIIW as of Q2 2026.

Westchester Capital Management (New York) reported no remaining Archimedes Tech SPAC Partners II Co Warrant position as of Q2 2026 after selling out during the quarter.
Westchester Capital Management (New York) sold 199,999 Archimedes Tech SPAC Partners II Co Warrant shares in Q2 2026, an estimated $102K.
Westchester Capital Management (New York) first reported a position in Archimedes Tech SPAC Partners II Co Warrant in Q2 2025 and held it in 4 quarters.
Westchester Capital Management (New York)'s Archimedes Tech SPAC Partners II Co Warrant position peaked at $110K in Q4 2025.
32 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co Warrant as of Q2 2026.

Based on Westchester Capital Management (New York)'s 13F filing for Q2 2026, filed 14 Aug 2026.