Jane Street
ARX

Jane Street’s Accelerant Holdings ARX Stock Holding History

Jane Street’s Portfolio ARX Stock Details ARX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$11.2M Buy
952,066
+91,369
+11% +$1.28M ﹤0.01% 2713
2026
Q1 		$11.5M Buy
+860,697
New +$10.9M ﹤0.01% 2355
2025
Q4 		– Sell
-55,365
Closed -$824K – 12900
2025
Q3 		$824K Buy
+55,365
New +$1.3M ﹤0.01% 6737

Other funds holding ARX

SBLIC
Security Benefit Life Insurance Company Topeka, Kansas $182M AUM 31.21% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
KC
Keenan Capital Burlingame, California $506M AUM 7.03% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
GGHC
Gilder Gagnon Howe & Co New York $9.69B AUM 55.7% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
B
Barings Charlotte, North Carolina $5.64B AUM 18.33% 1-Year Est. Return
ACL
Azora Capital LP Miami, Florida $2.37B AUM 34.87% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Jane Street's ARX Position: Q2 2026 in Review

Jane Street increased its Accelerant Holdings (ARX) stake by 11% in Q2 2026, buying an estimated $1.28M and bringing the position to 952,066 shares worth $11.2M. The position accounts for ﹤0.01% of the portfolio, ranked #2713.

Jane Street first reported a position in ARX in Q3 2025 and has held it in 3 quarters since. The position peaked at $11.5M in Q1 2026. 116 funds tracked by Wall St. Rank hold ARX as of Q2 2026.

  • Jane Street held 952,066 shares of Accelerant Holdings worth $11.2M as of Q2 2026.
  • Jane Street bought 91,369 Accelerant Holdings shares in Q2 2026, an estimated $1.28M.
  • Accelerant Holdings made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #2713 holding.
  • Jane Street first reported a position in Accelerant Holdings in Q3 2025 and has held it in 3 quarters since.
  • Jane Street's Accelerant Holdings position peaked at $11.5M in Q1 2026.
  • 116 funds tracked by Wall St. Rank held Accelerant Holdings as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.