DCM
ATII

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

Driehaus 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
Q1 		– Sell
-573,083
Closed -$5.94M – 462
2025
Q4 		$5.94M Hold
573,083
– – 0.04% 303
2025
Q3 		$5.85M Sell
573,083
-91,215
-14% -$931K 0.04% 319
2025
Q2 		$6.8M Buy
+664,298
New +$6.7M 0.05% 289

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

Driehaus Capital Management's ATII Position: Q1 2026 in Review

Driehaus Capital Management sold out of Archimedes Tech SPAC Partners II Co (ATII) in Q1 2026, closing a stake of 573,083 shares — an estimated $5.94M sold.

Driehaus Capital Management first reported a position in ATII in Q2 2025 and held it in 3 quarters. The position peaked at $6.8M in Q2 2025. 54 funds tracked by Wall St. Rank hold ATII as of Q1 2026.

  • Driehaus Capital Management reported no remaining Archimedes Tech SPAC Partners II Co position as of Q1 2026 after selling out during the quarter.
  • Driehaus Capital Management sold 573,083 Archimedes Tech SPAC Partners II Co shares in Q1 2026, an estimated $5.94M.
  • Driehaus Capital Management first reported a position in Archimedes Tech SPAC Partners II Co in Q2 2025 and held it in 3 quarters.
  • Driehaus Capital Management's Archimedes Tech SPAC Partners II Co position peaked at $6.8M in Q2 2025.
  • 54 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co as of Q1 2026.

Based on Driehaus Capital Management's 13F filing for Q1 2026, filed 15 May 2026.