Jane Street
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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
Q3 		$12.5M Sell
632,208
-319,858
-34% -$5.3M ﹤0.01% 2564
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

Deer Park Road Corp
Deer Park Road Corp Steamboat Springs, Colorado $110M AUM 26.33% 1-Year Est. Return
Barings
Barings Charlotte, North Carolina $5.84B AUM 11.61% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $123B AUM 30.05% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $144B AUM 22.91% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Westchester Capital Management (New York)
Westchester Capital Management (New York) Valhalla, New York $2.21B AUM 22.91% 1-Year Est. Return

Jane Street's ARX Position: Q3 2026 in Review

Jane Street reduced its Accelerant Holdings (ARX) stake by 34% in Q3 2026, selling an estimated $5.3M and leaving 632,208 shares worth $12.5M. The position accounts for ﹤0.01% of the portfolio, ranked #2564.

Jane Street first reported a position in ARX in Q3 2025 and has held it in 4 quarters since. 79 funds tracked by Wall St. Rank hold ARX as of Q3 2026.

  • Jane Street held 632,208 shares of Accelerant Holdings worth $12.5M as of Q3 2026.
  • Jane Street sold 319,858 Accelerant Holdings shares in Q3 2026, an estimated $5.3M.
  • Accelerant Holdings made up ﹤0.01% of Jane Street's portfolio in Q3 2026, its #2564 holding.
  • Jane Street first reported a position in Accelerant Holdings in Q3 2025 and has held it in 4 quarters since.
  • 79 funds tracked by Wall St. Rank held Accelerant Holdings as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.