LP
ARX

LMR Partners’s Accelerant Holdings ARX Stock Holding History

LMR Partners’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 		$156K Buy
+11,672
New +$148K ﹤0.01% 1221
2025
Q4 		– Sell
-260,000
Closed -$3.87M – 1792
2025
Q3 		$3.87M Buy
+260,000
New +$6.09M 0.02% 580

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

LMR Partners's ARX Position: Q1 2026 in Review

LMR Partners opened a new position in Accelerant Holdings (ARX) in Q1 2026: 11,672 shares worth $156K. The stake represents ﹤0.01% of the portfolio and ranks #1221 among its holdings. This is a return to the name: LMR Partners previously reported a position in ARX as recently as Q3 2025.

LMR Partners first reported a position in ARX in Q3 2025 and has held it in 2 quarters since. The position peaked at $3.87M in Q3 2025. 107 funds tracked by Wall St. Rank hold ARX as of Q1 2026.

  • LMR Partners held 11,672 shares of Accelerant Holdings worth $156K as of Q1 2026.
  • Accelerant Holdings was a new LMR Partners position in Q1 2026.
  • Accelerant Holdings made up ﹤0.01% of LMR Partners's portfolio in Q1 2026, its #1221 holding.
  • LMR Partners first reported a position in Accelerant Holdings in Q3 2025 and has held it in 2 quarters since.
  • LMR Partners's Accelerant Holdings position peaked at $3.87M in Q3 2025.
  • 107 funds tracked by Wall St. Rank held Accelerant Holdings as of Q1 2026.

Based on LMR Partners's 13F filing for Q1 2026, filed 15 May 2026.