MF
ATIIU

Magnetar Financial’s Archimedes Tech SPAC Partners II Co Unit ATIIU Stock Holding History

Magnetar Financial’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
2025
Q2 		– Sell
-1,300,000
Closed -$13.1M – 1225
2025
Q1 		$13.1M Buy
+1,300,000
New +$13.1M 0.17% 71

Other funds holding ATIIU

Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
RCM
Rivernorth Capital Management West Palm Beach, Florida $2B AUM 0.66% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
MI
MMCAP International Grand Cayman, Cayman Islands $1.16B AUM 77.9% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
TCM
Tuttle Capital Management Riverside, Connecticut $60.8M AUM 17.47% 1-Year Est. Return
CS
Clear Street New York $24.6B AUM 56.26% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $69.7B AUM 40.86% 1-Year Est. Return

Magnetar Financial's ATIIU Position: Q2 2025 in Review

Magnetar Financial sold out of Archimedes Tech SPAC Partners II Co Unit (ATIIU) in Q2 2025, closing a stake of 1,300,000 shares — an estimated $13.1M sold.

Magnetar Financial first reported a position in ATIIU in Q1 2025 and held it in 1 quarter. The position peaked at $13.1M in Q1 2025. 9 funds tracked by Wall St. Rank hold ATIIU as of Q2 2025.

  • Magnetar Financial reported no remaining Archimedes Tech SPAC Partners II Co Unit position as of Q2 2025 after selling out during the quarter.
  • Magnetar Financial sold 1,300,000 Archimedes Tech SPAC Partners II Co Unit shares in Q2 2025, an estimated $13.1M.
  • Magnetar Financial first reported a position in Archimedes Tech SPAC Partners II Co Unit in Q1 2025 and held it in 1 quarter.
  • Magnetar Financial's Archimedes Tech SPAC Partners II Co Unit position peaked at $13.1M in Q1 2025.
  • 9 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co Unit as of Q2 2025.

Based on Magnetar Financial's 13F filing for Q2 2025, filed 12 Aug 2025.