PC
ATII

Periscope Capital’s Archimedes Tech SPAC Partners II Co ATII Stock Holding History

Periscope Capital’s Portfolio ATII Stock Details ATII Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.68M Sell
352,880
-95,220
-21% -$1M 0.41% 54
2025
Q4 		$4.64M Sell
448,100
-51,900
-10% -$538K 0.53% 24
2025
Q3 		$5.12M Buy
500,000
+50,000
+11% +$511K 0.81% 16
2025
Q2 		$4.6M Buy
+450,000
New +$4.54M 1.01% 16

Other funds holding ATII

TCM
Tenor Capital Management New York $6.49B AUM 3.01% 1-Year Est. Return
MF
Magnetar Financial Evanston, Illinois $9.84B AUM 190.64% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
LA
Linden Advisors New York $17.9B AUM 1.72% 1-Year Est. Return
AA
AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return
WCMNY
Westchester Capital Management (New York) Valhalla, New York $2.21B AUM 26.02% 1-Year Est. Return
LP
LMR Partners London, United Kingdom $45.4B AUM 60.68% 1-Year Est. Return
GCM
Ghisallo Capital Management Boston, Massachusetts $3.63B AUM 30.51% 1-Year Est. Return
GL
Governors Lane New York $1.56B AUM 30.42% 1-Year Est. Return
AIMCA
Alberta Investment Management Corp (AIMCo) Edmonton, Alberta, Canada $16.7B AUM 23.27% 1-Year Est. Return

Periscope Capital's ATII Position: Q1 2026 in Review

Periscope Capital reduced its Archimedes Tech SPAC Partners II Co (ATII) stake by 21% in Q1 2026, selling an estimated $1M and leaving 352,880 shares worth $3.68M. The position accounts for 0.41% of the portfolio, ranked #54.

Periscope Capital first reported a position in ATII in Q2 2025 and has held it in 4 quarters since. The position peaked at $5.12M in Q3 2025. 54 funds tracked by Wall St. Rank hold ATII as of Q1 2026.

  • Periscope Capital held 352,880 shares of Archimedes Tech SPAC Partners II Co worth $3.68M as of Q1 2026.
  • Periscope Capital sold 95,220 Archimedes Tech SPAC Partners II Co shares in Q1 2026, an estimated $1M.
  • Archimedes Tech SPAC Partners II Co made up 0.41% of Periscope Capital's portfolio in Q1 2026, its #54 holding.
  • Periscope Capital first reported a position in Archimedes Tech SPAC Partners II Co in Q2 2025 and has held it in 4 quarters since.
  • Periscope Capital's Archimedes Tech SPAC Partners II Co position peaked at $5.12M in Q3 2025.
  • 54 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co as of Q1 2026.

Based on Periscope Capital's 13F filing for Q1 2026, filed 14 May 2026.