WRBC
ATII

W.R. Berkley Corp’s Archimedes Tech SPAC Partners II Co ATII Stock Holding History

W.R. Berkley Corp’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 		$2.17M Sell
208,065
-20,141
-9% -$212K 0.12% 167
2025
Q4 		$2.36M Hold
228,206
– – 0.11% 138
2025
Q3 		$2.33M Hold
228,206
– – 0.13% 132
2025
Q2 		$2.33M Buy
+228,206
New +$2.3M 0.12% 138

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

W.R. Berkley Corp's ATII Position: Q1 2026 in Review

W.R. Berkley Corp reduced its Archimedes Tech SPAC Partners II Co (ATII) stake by 8.8% in Q1 2026, selling an estimated $212K and leaving 208,065 shares worth $2.17M. The position accounts for 0.12% of the portfolio, ranked #167.

W.R. Berkley Corp first reported a position in ATII in Q2 2025 and has held it in 4 quarters since. The position peaked at $2.36M in Q4 2025. 54 funds tracked by Wall St. Rank hold ATII as of Q1 2026.

  • W.R. Berkley Corp held 208,065 shares of Archimedes Tech SPAC Partners II Co worth $2.17M as of Q1 2026.
  • W.R. Berkley Corp sold 20,141 Archimedes Tech SPAC Partners II Co shares in Q1 2026, an estimated $212K.
  • Archimedes Tech SPAC Partners II Co made up 0.12% of W.R. Berkley Corp's portfolio in Q1 2026, its #167 holding.
  • W.R. Berkley Corp first reported a position in Archimedes Tech SPAC Partners II Co in Q2 2025 and has held it in 4 quarters since.
  • W.R. Berkley Corp's Archimedes Tech SPAC Partners II Co position peaked at $2.36M in Q4 2025.
  • 54 funds tracked by Wall St. Rank held Archimedes Tech SPAC Partners II Co as of Q1 2026.

Based on W.R. Berkley Corp's 13F filing for Q1 2026, filed 15 May 2026.