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
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
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
KC
Keenan Capital Burlingame, California $474M AUM 2.41% 1-Year Est. Return
GGHC
Gilder Gagnon Howe & Co New York $8.34B AUM 46.58% 1-Year Est. Return
B
Barings Charlotte, North Carolina $6.19B AUM 16.5% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Jane Street's ARX Position: Q1 2026 in Review

Jane Street opened a new position in Accelerant Holdings (ARX) in Q1 2026: 860,697 shares worth $11.5M. The stake represents ﹤0.01% of the portfolio and ranks #2355 among its holdings. This is a return to the name: Jane Street previously reported a position in ARX as recently as Q3 2025.

Jane Street first reported a position in ARX in Q3 2025 and has held it in 2 quarters since. 107 funds tracked by Wall St. Rank hold ARX as of Q1 2026.

  • Jane Street held 860,697 shares of Accelerant Holdings worth $11.5M as of Q1 2026.
  • Accelerant Holdings was a new Jane Street position in Q1 2026.
  • Accelerant Holdings made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #2355 holding.
  • Jane Street first reported a position in Accelerant Holdings in Q3 2025 and has held it in 2 quarters since.
  • 107 funds tracked by Wall St. Rank held Accelerant Holdings as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.