Accelerant Holdings - ARX

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 2 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
SECURITY BENEFIT LIFE INSURANCE CO /KS/ History No change 5,866,257 95,913 39.61% 32.51% 1 0 0.0% Q4 2025 Feb 03, 2026
Capital World Investors History Added to 5,767,631 94,300 0.01% 0.01% 2 +14,381 0.25% Q4 2025 Feb 11, 2026
GILDER GAGNON HOWE & CO LLC History Reduced 3,703,078 60,545 0.64% 0.59% 3 -195,194 -5.01% Q4 2025 Feb 17, 2026
Keenan Capital, LLC History New 3,139,980 51,338 9.35% 4 +3,139,980 New Q4 2025 Feb 13, 2026
ALLIANCEBERNSTEIN L.P. History Added to 2,846,468 46,539 0.01% 0.01% 5 +57,384 2.06% Q4 2025 Feb 17, 2026
BALYASNY ASSET MANAGEMENT L.P. History Added to 2,733,595 44,694 0.06% 0.04% 6 +714,811 35.41% Q4 2025 Feb 17, 2026
BARINGS LLC History No change 3,128,867 41,926 0.77% 0.88% 7 0 0.0% Q4 2025 Feb 12, 2026
Azora Capital LP History Added to 2,439,094 39,879 2.51% 0.43% 8 +1,811,976 288.94% Q4 2025 Feb 17, 2026
VANGUARD GROUP INC History Reduced 2,235,136 36,544 0.0% 0.0% 9 -13,471 -0.6% Q4 2025 Jan 29, 2026
JPMORGAN CHASE & CO History Added to 1,952,996 31,931 0.0% 0.0% 10 +342,133 21.24% Q4 2025 Feb 11, 2026
FMR LLC History Added to 1,788,135 29,236 0.0% 0.0% 11 +1,229,490 220.08% Q4 2025 Feb 17, 2026
ArrowMark Colorado Holdings LLC History Added to 1,644,013 26,879 0.59% 0.29% 12 +612,409 59.36% Q4 2025 Feb 17, 2026
Grandeur Peak Global Advisors, LLC History Added to 1,621,022 26,503 3.57% 1.89% 13 +675,093 71.37% Q4 2025 Feb 13, 2026
AMERICAN CENTURY COMPANIES INC History Added to 1,528,451 24,990 0.01% 0.01% 14 +615,626 67.44% Q4 2025 Feb 13, 2026
BAMCO INC /NY/ History Reduced 1,209,114 19,769 0.05% 0.05% 15 -9,195 -0.75% Q4 2025 Feb 17, 2026
CITADEL ADVISORS LLC History Reduced 755,552 12,353 0.0% 0.0% 16 -269,535 -26.29% Q4 2025 Feb 17, 2026
NORGES BANK History New 665,076 10,873 0.0% 17 +665,076 New Q4 2025 Feb 10, 2026
UBS Group AG History Added to 535,637 8,757 0.0% 0.0% 18 +411,612 331.88% Q4 2025 Jan 29, 2026
FRED ALGER MANAGEMENT, LLC History Reduced 439,698 7,189 0.03% 0.03% 19 -81,217 -15.59% Q4 2025 Feb 17, 2026
T. Rowe Price Investment Management, Inc. History Reduced 371,800 6,079 0.0% 0.02% 20 -1,984,001 -84.22% Q4 2025 Feb 19, 2026
MARSHALL WACE, LLP History Added to 348,147 5,692 0.01% 0.0% 21 +242,932 230.89% Q4 2025 Feb 13, 2026
BANK OF AMERICA CORP /DE/ History Reduced 335,739 5,489 0.0% 0.0% 22 -174,641 -34.22% Q4 2025 Feb 17, 2026
GOLDMAN SACHS GROUP INC History Added to 302,626 4,947 0.0% 0.0% 23 +208,279 220.76% Q4 2025 Mar 25, 2026
BlackRock, Inc. History Reduced 247,656 4,049 0.0% 0.0% 24 -2,059,045 -89.26% Q4 2025 Feb 12, 2026
SEVEN GRAND MANAGERS, LLC History No change 200,000 3,270 0.25% 0.24% 25 0 0.0% Q4 2025 Feb 10, 2026
Squarepoint Ops LLC History Reduced 199,070 3,254 0.0% 0.0% 26 -30,825 -13.41% Q4 2025 Feb 13, 2026
Lighthouse Investment Partners, LLC History Added to 198,850 3,251 0.1% 0.08% 27 +26,539 15.4% Q4 2025 Feb 17, 2026
Woodline Partners LP History Added to 197,312 3,226 0.01% 0.01% 28 +51,899 35.69% Q4 2025 Feb 17, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 181,647 2,969 0.0% 0.01% 29 -690,433 -79.17% Q4 2025 Feb 17, 2026
TEACHER RETIREMENT SYSTEM OF TEXAS History Added to 176,043 2,878 0.01% 0.01% 30 +1,043 0.6% Q4 2025 Jan 28, 2026
Counterpoint Mutual Funds LLC History New 175,967 2,877 0.21% 31 +175,967 New Q4 2025 Feb 12, 2026
Lykos Global Management, LP History New 175,000 2,861 2.02% 32 +175,000 New Q4 2025 Feb 17, 2026
Interval Partners, LP History Reduced 169,348 2,768 0.05% 0.05% 33 -47,662 -21.96% Q4 2025 Feb 17, 2026
Neuberger Berman Group LLC History Reduced 160,047 2,616 0.0% 0.01% 34 -586,070 -78.55% Q4 2025 Feb 13, 2026
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND History No change 150,000 2,452 0.0% 0.0% 35 0 0.0% Q4 2025 Feb 13, 2026
Centiva Capital, LP History Reduced 127,605 2,086 0.02% 0.02% 36 -23,428 -15.51% Q4 2025 Feb 13, 2026
Walleye Capital LLC History Reduced 125,880 2,058 0.01% 0.02% 37 -173,920 -58.01% Q4 2025 Feb 13, 2026
MORGAN STANLEY History Added to 108,230 1,769 0.0% 0.0% 38 +18,131 20.12% Q4 2025 Feb 13, 2026
XTX Topco Ltd History Added to 106,248 1,737 0.05% 0.05% 39 +42,383 66.36% Q4 2025 Feb 17, 2026
Ghisallo Capital Management LLC History Reduced 100,000 1,635 0.07% 0.21% 40 -325,000 -76.47% Q4 2025 Feb 17, 2026
Burkehill Global Management, LP History No change 100,000 1,635 0.11% 0.08% 41 0 0.0% Q4 2025 Feb 17, 2026
G2 Investment Partners Management LLC History New 93,341 1,526 0.36% 42 +93,341 New Q4 2025 Feb 17, 2026
Swiss National Bank History New 77,900 1,273 0.0% 43 +77,900 New Q4 2025 Feb 12, 2026
TIGER GLOBAL MANAGEMENT LLC History No change 75,000 1,226 0.0% 0.0% 44 0 0.0% Q4 2025 Feb 17, 2026
RENAISSANCE TECHNOLOGIES LLC History New 72,700 1,188 0.0% 45 +72,700 New Q4 2025 Feb 12, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History New 59,414 971 0.0% 46 +59,414 New Q4 2025 Feb 13, 2026
Yorktown Management & Research Co Inc History New 59,300 969 0.77% 47 +59,300 New Q4 2025 Jan 23, 2026
Schonfeld Strategic Advisors LLC History Reduced 57,211 935 0.0% 0.01% 48 -99,451 -63.48% Q4 2025 Feb 17, 2026
SummitTX Capital, L.P. History Added to 56,780 928 0.03% 0.02% 49 +24,860 77.88% Q4 2025 Feb 17, 2026
Jain Global LLC History Reduced 50,234 821 0.0% 0.01% 50 -149,766 -74.88% Q4 2025 Feb 17, 2026
Jefferies Financial Group Inc. History Added to 44,980 735 0.0% 0.0% 51 +34,980 349.8% Q4 2025 Feb 09, 2026
SEI INVESTMENTS CO History Added to 37,902 619 0.0% 0.0% 52 +7,972 26.64% Q4 2025 Feb 13, 2026
BNP PARIBAS FINANCIAL MARKETS History New 35,778 584 0.0% 53 +35,778 New Q4 2025 Feb 10, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History New 34,972 571 0.0% 54 +34,972 New Q4 2025 Feb 17, 2026
D. E. Shaw & Co., Inc. History Reduced 34,694 567 0.0% 0.0% 55 -121,777 -77.83% Q4 2025 Feb 17, 2026
STATE STREET CORP History New 33,554 548 0.0% 56 +33,554 New Q4 2025 Feb 13, 2026
Zurcher Kantonalbank (Zurich Cantonalbank) History New 32,300 528 0.0% 57 +32,300 New Q4 2025 Jan 27, 2026
Hudson Bay Capital Management LP History Reduced 32,250 527 0.0% 0.0% 58 -52,048 -61.74% Q4 2025 Feb 13, 2026
Legal & General Group Plc History Added to 30,271 494 0.0% 0.0% 59 +20,271 202.71% Q4 2025 Feb 09, 2026
BOOTHBAY FUND MANAGEMENT, LLC History New 26,000 425 0.01% 60 +26,000 New Q4 2025 Feb 17, 2026
STATE OF WISCONSIN INVESTMENT BOARD History New 25,269 413 0.0% 61 +25,269 New Q4 2025 Feb 17, 2026
PharVision Advisers, LLC History Added to 23,839 389 0.2% 0.14% 62 +7,566 46.49% Q4 2025 Feb 17, 2026
GSA CAPITAL PARTNERS LLP History New 23,518 385 0.03% 63 +23,518 New Q4 2025 Feb 06, 2026
JANUS HENDERSON GROUP PLC History Reduced 23,500 384 0.0% 0.0% 64 -519,784 -95.67% Q4 2025 Feb 17, 2026
NATIXIS ADVISORS, LLC History New 23,347 382 0.0% 65 +23,347 New Q4 2025 Feb 10, 2026
Crestwood Capital Management, L.P. History No change 20,000 327 0.21% 0.21% 66 0 0.0% Q4 2025 Feb 11, 2026
FJ Capital Management LLC History New 17,973 293 0.03% 67 +17,973 New Q4 2025 Feb 13, 2026
Quadrature Capital Ltd History Reduced 16,563 270 0.0% 0.01% 68 -54,196 -76.59% Q4 2025 Feb 17, 2026
Quantbot Technologies LP History New 16,398 268 0.01% 69 +16,398 New Q4 2025 Feb 10, 2026
NORTHERN TRUST CORP History New 14,819 242 0.0% 70 +14,819 New Q4 2025 Feb 17, 2026
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. History New 12,888 210 0.01% 71 +12,888 New Q4 2025 Feb 13, 2026
Arizona State Retirement System History New 10,855 177 0.0% 72 +10,855 New Q4 2025 Jan 28, 2026
BARCLAYS PLC History New 10,375 169 0.0% 73 +10,375 New Q4 2025 Feb 13, 2026
ENVESTNET ASSET MANAGEMENT INC History Reduced 10,292 168 0.0% 0.0% 74 -782 -7.06% Q4 2025 Feb 10, 2026
WESBANCO BANK INC History New 10,000 163 0.0% 75 +10,000 New Q4 2025 Feb 03, 2026
KLP KAPITALFORVALTNING AS History New 8,500 138 0.0% 76 +8,500 New Q4 2025 Jan 28, 2026
CWM, LLC History New 6,666 109 0.0% 77 +6,666 New Q4 2025 Jan 26, 2026
Ancora Advisors LLC History New 5,300 86 0.0% 78 +5,300 New Q4 2025 Feb 17, 2026
ROYAL BANK OF CANADA History New 5,144 84 0.0% 79 +5,144 New Q4 2025 Feb 17, 2026
CITIGROUP INC History New 5,080 83 0.0% 80 +5,080 New Q4 2025 Feb 13, 2026
ACADIAN ASSET MANAGEMENT LLC History New 5,016 82 0.0% 81 +5,016 New Q4 2025 Feb 10, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Added to 3,546 57 0.0% 0.0% 82 +722 25.57% Q4 2025 Feb 06, 2026
Quarry LP History Reduced 1,611 26 0.0% 0.01% 83 -1,086 -40.27% Q4 2025 Feb 13, 2026
SIMPLEX TRADING, LLC History Added to 1,564 25 0.0% 0.0% 84 +364 30.33% Q4 2025 Feb 11, 2026
Parallel Advisors, LLC History New 666 10 0.0% 86 +666 New Q4 2025 Feb 11, 2026
FIRST HORIZON CORP History Added to 645 10 0.0% 0.0% 85 +351 119.39% Q4 2025 Jan 27, 2026
HM PAYSON & CO History New 419 6 0.0% 87 +419 New Q4 2025 Feb 12, 2026
OSAIC HOLDINGS, INC. History Added to 398 6 0.0% 0.0% 88 +273 218.4% Q4 2025 Feb 17, 2026
GROUP ONE TRADING LLC History Reduced 300 4 0.0% 0.0% 89 -42,437 -99.3% Q4 2025 Feb 12, 2026
Farther Finance Advisors, LLC History New 154 2 0.0% 91 +154 New Q4 2025 Jan 23, 2026
NATIONAL BANK OF CANADA /FI/ History New 144 2 0.0% 90 +144 New Q4 2025 Feb 17, 2026
Rachor Investment Advisory Services, LLC History New 135 2 0.0% 92 +135 New Q4 2025 Jan 30, 2026
Tower Research Capital LLC (TRC) History Reduced 93 1 0.0% 0.0% 93 -1,775 -95.02% Q4 2025 Feb 17, 2026
Steward Partners Investment Advisory, LLC History Reduced 119 1 0.0% 0.0% 94 -216 -64.48% Q4 2025 Feb 12, 2026
SBI Securities Co., Ltd. History Reduced 101 1 0.0% 0.0% 95 -66 -39.52% Q4 2025 Feb 03, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC History Closed out 0 0 0.11% -1,011,940 -100.0% Q3 2025 Nov 14, 2025
Journey Advisory Group, LLC History Closed out 0 0 0.58% -432,526 -100.0% Q3 2025 Nov 10, 2025
CenterBook Partners LP History Closed out 0 0 0.28% -382,645 -100.0% Q3 2025 Nov 07, 2025
Dragoneer Investment Group, LLC History Closed out 0 0 0.11% -336,361 -100.0% Q3 2025 Nov 14, 2025
Verition Fund Management LLC History Closed out 0 0 0.02% -272,240 -100.0% Q3 2025 Nov 14, 2025
LMR Partners LLP History Closed out 0 0 0.02% -260,000 -100.0% Q3 2025 Nov 14, 2025
SOROS FUND MANAGEMENT LLC History Closed out 0 0 0.05% -225,000 -100.0% Q3 2025 Nov 14, 2025
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP History Closed out 0 0 1.08% -208,600 -100.0% Q3 2025 Feb 17, 2026
Blackstone Inc. History Closed out 0 0 0.01% -200,000 -100.0% Q3 2025 Nov 14, 2025
Pembroke Management, LTD History Closed out 0 0 0.14% -93,785 -100.0% Q3 2025 Oct 28, 2025
Point72 Asset Management, L.P. History Closed out 0 0 0.0% -76,300 -100.0% Q3 2025 Nov 14, 2025
TUDOR INVESTMENT CORP ET AL History Closed out 0 0 4.99% -72,173 -100.0% Q3 2025 Dec 09, 2025
Allianz Asset Management GmbH History Closed out 0 0 0.0% -71,399 -100.0% Q3 2025 Nov 04, 2025
JANE STREET GROUP, LLC History Closed out 0 0 0.0% -55,365 -100.0% Q3 2025 Nov 14, 2025
PICTON MAHONEY ASSET MANAGEMENT History Closed out 0 0 0.01% -52,349 -100.0% Q3 2025 Nov 12, 2025
Qube Research & Technologies Ltd History Closed out 0 0 0.0% -41,694 -100.0% Q3 2025 Nov 14, 2025
Limestone Investment Advisors LP History Closed out 0 0 0.05% -40,900 -100.0% Q3 2025 Nov 13, 2025
TD ASSET MANAGEMENT INC History Closed out 0 0 0.0% -40,072 -100.0% Q3 2025 Nov 10, 2025
FRANKLIN RESOURCES INC History Closed out 0 0 0.0% -35,908 -100.0% Q3 2025 Nov 13, 2025
3G Capital Partners LP History Closed out 0 0 0.12% -35,000 -100.0% Q3 2025 Nov 14, 2025
Corient Private Wealth LLC History Closed out 0 0 0.0% -30,000 -100.0% Q3 2025 Nov 14, 2025
Oribel Capital Management, LP History Closed out 0 0 0.01% -25,900 -100.0% Q3 2025 Nov 13, 2025
Graham Capital Management, L.P. History Closed out 0 0 0.0% -10,510 -100.0% Q3 2025 Nov 14, 2025
Aster Capital Management (DIFC) Ltd History Closed out 0 0 0.0% -477 -100.0% Q3 2025 Nov 12, 2025
PRINCIPAL SECURITIES, INC. History Closed out 0 0 0.0% -250 -100.0% Q3 2025 Nov 12, 2025
MAI Capital Management History New 57 0 +57 New Q4 2025 Feb 13, 2026
JONES FINANCIAL COMPANIES LLLP History New 18 0 +18 New Q4 2025 Feb 17, 2026
GAMMA Investing LLC History New 9 0 +9 New Q4 2025 Jan 05, 2026
Rakuten Securities, Inc. History No change 1 0 0 0.0% Q4 2025 Jan 29, 2026