RCM
ATII

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

Rivernorth Capital Management’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
Q2 		– Sell
-427,500
Closed -$4.45M – 647
2026
Q1 		$4.45M Sell
427,500
-20,250
-5% -$213K 0.22% 127
2025
Q4 		$4.64M Buy
447,750
+90,000
+25% +$933K 0.22% 135
2025
Q3 		$3.65M Buy
+357,750
New +$3.65M 0.21% 134

Other funds holding ATII

TCM
Tenor Capital Management New York $7.09B AUM 3.55% 1-Year Est. Return
FBCM
Fort Baker Capital Management Larkspur, California $1.37B AUM 26.91% 1-Year Est. Return
MF
Magnetar Financial Evanston, Illinois $11B AUM 3.37% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
DAM
Decagon Asset Management London, United Kingdom $525M AUM 50.51% 1-Year Est. Return
LA
Linden Advisors New York $19.3B AUM 1.47% 1-Year Est. Return
GCM
Ghisallo Capital Management Boston, Massachusetts $5.1B AUM 39.13% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Hudson Bay Capital Management
Hudson Bay Capital Management Stamford, Connecticut $36.8B AUM 42.13% 1-Year Est. Return
SC
Shay Capital New York $1.56B AUM 46.17% 1-Year Est. Return

Rivernorth Capital Management's ATII Position: Q2 2026 in Review

Rivernorth Capital Management sold out of Archimedes Tech SPAC Partners II Co (ATII) in Q2 2026, closing a stake of 427,500 shares — an estimated $4.45M sold.

Rivernorth Capital Management first reported a position in ATII in Q3 2025 and held it in 3 quarters. The position peaked at $4.64M in Q4 2025. 49 funds tracked by Wall St. Rank hold ATII as of Q2 2026.

  • Rivernorth Capital Management reported no remaining Archimedes Tech SPAC Partners II Co position as of Q2 2026 after selling out during the quarter.
  • Rivernorth Capital Management sold 427,500 Archimedes Tech SPAC Partners II Co shares in Q2 2026, an estimated $4.45M.
  • Rivernorth Capital Management first reported a position in Archimedes Tech SPAC Partners II Co in Q3 2025 and held it in 3 quarters.
  • Rivernorth Capital Management's Archimedes Tech SPAC Partners II Co position peaked at $4.64M in Q4 2025.
  • 49 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co as of Q2 2026.

Based on Rivernorth Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.