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Disclosery

ARX ACCELERANT HOLDINGS

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COMMON STOCK (common), issuer CIK 1997350

97 managers (98 13F filers) reported a position in ARX shares at 2025-12-31, 50,070,804 shares in all. 36 filers opened a position and 26 filers sold out during the quarter.

Managers
97
13F filers
98
New
36
Added
25
Reduced
27
Sold out
26
Shares held by filers
50,070,804

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
SECURITY BENEFIT LIFE INSURANCE CO /KS/in group SECURITY BENEFIT LIFE INSURAN…5,866,257$95.9M39.61%013F-HRTimelineGroup
Capital World Investors5,767,631$94.3M0.01%+14,38113F-HRTimeline
GILDER GAGNON HOWE & CO LLC3,703,078$60.5M0.64%-195,19413F-HRTimeline
Keenan Capital, LLC3,139,980$51.3M9.35%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.2,846,468$46.5M0.01%+57,38413F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management2,733,595$44.7M0.08%+714,81113F-HRTimelineGroup
BARINGS LLCin group BARINGS LLC3,128,867$41.9M0.77%013F-HRTimelineGroup
Azora Capital LP2,439,094$39.9M2.51%+1,811,97613F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC2,235,136$36.5M<0.01%-13,47113F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO1,952,996$31.9M<0.01%+342,13313F-HRTimelineGroup
FMR LLCin group FMR LLC1,788,135$29.2M<0.01%+1,229,49013F-HRTimelineGroup
ArrowMark Colorado Holdings LLC1,644,013$26.9M0.59%+612,40913F-HRTimeline
Grandeur Peak Global Advisors, LLC1,621,022$26.5M3.57%+675,09313F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,528,451$25M0.01%+615,62613F-HRTimelineGroup
BAMCO INC /NY/in group Baron Capital1,209,114$19.8M0.05%-9,19513F-HRTimelineGroup
T. Rowe Price Investment Management, In…976,086$16M0.01%-1,379,71513F-HR/ATimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC715,452$11.7M0.01%-206,63513F-HRTimelineGroup
NORGES BANK665,076$10.9M<0.01%new13F-HRTimeline
UBS Group AGgroup of 2 filers holding595,051$9.73M+471,026Timeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC439,698$7.19M0.03%-81,21713F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP348,147$5.69M0.01%+242,93213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/335,739$5.49M<0.01%-174,64113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC302,626$4.95M<0.01%+208,27913F-HR/ATimelineGroup
BlackRock, Inc.in group BlackRock, Inc.247,656$4.05M<0.01%-2,059,04513F-HRTimelineGroup
SEVEN GRAND MANAGERS, LLC200,000$3.27M0.25%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC199,070$3.25M0.01%-30,82513F-HRTimelineGroup
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…198,850$3.25M0.11%+26,53913F-HRTimelineGroup
Woodline Partners LP197,312$3.23M0.01%+51,89913F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC181,647$2.97M<0.01%-690,43313F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS176,043$2.88M0.01%+1,04313F-HRTimeline
Counterpoint Mutual Funds LLC175,967$2.88M0.21%new13F-HRTimeline
Lykos Global Management, LP175,000$2.86M2.02%13F-HRTimeline
Interval Partners, LP169,348$2.77M0.06%-47,66213F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC160,047$2.62M<0.01%-586,07013F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…150,000$2.45M<0.01%013F-HRTimeline
Centiva Capital, LP127,605$2.09M0.13%-23,42813F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC125,880$2.06M0.01%-173,92013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY108,230$1.77M<0.01%+18,13113F-HR/ATimelineGroup
XTX Topco Ltdin group XTX Topco Ltd106,248$1.74M0.05%+42,38313F-HRTimelineGroup
Ghisallo Capital Management LLC100,000$1.64M0.07%-325,00013F-HRTimeline
Burkehill Global Management, LP100,000$1.64M0.11%013F-HRTimeline
G2 Investment Partners Management LLC93,341$1.53M0.36%new13F-HRTimeline
Swiss National Bank77,900$1.27M<0.01%new13F-HRTimeline
TIGER GLOBAL MANAGEMENT LLC75,000$1.23M<0.01%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC72,700$1.19M<0.01%new13F-HRTimeline
Yorktown Management & Research Co Inc59,300$970K0.78%new13F-HRTimeline
Schonfeld Strategic Advisors LLC57,211$935K<0.01%-99,45113F-HRTimeline
SummitTX Capital, L.P.56,780$928K0.03%+24,86013F-HRTimeline
Jain Global LLC50,234$821K0.01%-149,76613F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.44,980$735K0.01%+34,98013F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO37,902$620K<0.01%+7,97213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS35,778$585K<0.01%new13F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…34,972$572K<0.01%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.34,694$567K<0.01%-121,77713F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP33,554$549K<0.01%new13F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…32,300$528K<0.01%new13F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…32,250$527K<0.01%-52,04813F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc30,271$495K<0.01%+20,27113F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC26,000$425K0.01%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD25,269$413K<0.01%new13F-HRTimeline
PharVision Advisers, LLC23,839$390K0.2%+7,56613F-HRTimeline
GSA CAPITAL PARTNERS LLP23,518$385K0.03%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson23,500$384K<0.01%-519,78413F-HRTimelineGroup
NATIXIS ADVISORS, LLCin group Natixis Investment Managers23,347$382K<0.01%new13F-HRTimelineGroup
Crestwood Capital Management, L.P.20,000$327K0.21%013F-HRTimeline
FJ Capital Management LLC17,973$294K0.03%new13F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd16,563$271K<0.01%-54,19613F-HRTimelineGroup
Quantbot Technologies LP16,398$268K0.01%new13F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP14,819$242K<0.01%new13F-HRTimelineGroup
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…12,888$211K0.01%new13F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM10,855$177K<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC10,375$170K<0.01%new13F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC10,292$168K<0.01%-78213F-HRTimelineGroup
WESBANCO BANK INC10,000$164K<0.01%new13F-HRTimeline
KLP KAPITALFORVALTNING AS8,500$139K<0.01%new13F-HRTimeline
CWM, LLCin group CWM, LLC6,666$109K<0.01%new13F-HRTimelineGroup
Ancora Advisors LLCin group Ancora Advisors LLC5,300$86.7K<0.01%new13F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,144$84K<0.01%-145,55613F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC5,080$83.1K<0.01%new13F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC5,016$82K<0.01%new13F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…3,546$58K<0.01%+72213F-HRTimelineGroup
Quarry LP1,611$26.3K<0.01%-1,08613F-HRTimeline
SIMPLEX TRADING, LLC1,564$25.6K<0.01%new13F-HRTimeline
Parallel Advisors, LLC666$10.9K<0.01%new13F-HRTimeline
FIRST HORIZON CORP645$10.5K<0.01%+35113F-HRTimeline
HM PAYSON & CO419$6.85K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.398$6.51K<0.01%+27313F-HRTimelineGroup
Farther Finance Advisors, LLC154$2.52K<0.01%new13F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/144$2.35K<0.01%new13F-HRTimelineGroup
Rachor Investment Advisory Services, LLC135$2.21K<0.01%13F-HRTimeline
Steward Partners Investment Advisory, L…119$1.95K<0.01%-21613F-HRTimeline
SBI Securities Co., Ltd.101$1.65K<0.01%-6613F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…93$1.52K<0.01%-1,77513F-HRTimelineGroup
MAI Capital Management57$932<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP18$294<0.01%new13F-HRTimelineGroup
GAMMA Investing LLC9$147<0.01%new13F-HRTimeline
Rakuten Securities, Inc.in group Rakuten Group, Inc.1$16<0.01%013F-HRTimelineGroup

Events

  • GLAZER CAPITAL, LLC and 1 other reporting person reported 5,969,101 ARX shares, 5% of the class, as of 2026-09-23, in a 13G filed 2026-09-30. 0001076809-26-000110

    Accepted , ingested