Millennium Management
ARX

Millennium Management’s Accelerant Holdings ARX Stock Holding History

Millennium Management’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 		$1.67M Sell
125,068
-56,579
-31% -$715K ﹤0.01% 4031
2025
Q4 		$2.97M Sell
181,647
-690,433
-79% -$9.72M ﹤0.01% 3573
2025
Q3 		$13M Buy
+872,080
New +$20.4M 0.01% 2115

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

Millennium Management's ARX Position: Q1 2026 in Review

Millennium Management reduced its Accelerant Holdings (ARX) stake by 31% in Q1 2026, selling an estimated $715K and leaving 125,068 shares worth $1.67M. The position accounts for ﹤0.01% of the portfolio, ranked #4031.

Millennium Management first reported a position in ARX in Q3 2025 and has held it in 3 quarters since. The position peaked at $13M in Q3 2025. 107 funds tracked by Wall St. Rank hold ARX as of Q1 2026.

  • Millennium Management held 125,068 shares of Accelerant Holdings worth $1.67M as of Q1 2026.
  • Millennium Management sold 56,579 Accelerant Holdings shares in Q1 2026, an estimated $715K.
  • Accelerant Holdings made up ﹤0.01% of Millennium Management's portfolio in Q1 2026, its #4031 holding.
  • Millennium Management first reported a position in Accelerant Holdings in Q3 2025 and has held it in 3 quarters since.
  • Millennium Management's Accelerant Holdings position peaked at $13M in Q3 2025.
  • 107 funds tracked by Wall St. Rank held Accelerant Holdings as of Q1 2026.

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