13F

Stock

Accelerant Holdings

ARX · held by 107 managers

Reported value

$741.8M

Holders

107

+27 new · −23 exited

Holders’ est. mark

−$91.8M

Price effect on 74 books still in the name

Largest holder

$78.4M

SECURITY BENEFIT LIFE INSURANCE CO /KS/

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
SECURITY BENEFIT LIFE INSURANCE CO /KS/5.87M$78.4M−$17.5MCut−$17.5M
Capital World Investors5.15M$68.8M−$15.4MCut−$25.5M
Keenan Capital, LLC3.99M$53.3M−$9.39MAdded$2.01M
GILDER GAGNON HOWE & CO LLC3.74M$50M−$11.1MCut−$10.5M
BARINGS LLC3.13M$46.1M$4.13MAdded$4.13M
ALLIANCEBERNSTEIN L.P.2.8M$45.8M$0Cut−$756.7K
AMERICAN CENTURY COMPANIES INC3.19M$42.6M−$4.57MAdded$17.6M
MARSHALL WACE, LLP2.27M$30.4M−$1.04MAdded$24.7M
VANGUARD PORTFOLIO MANAGEMENT LLC2.11M$28.2MHeld
JPMORGAN CHASE & CO2.02M$26.9M−$5.94MCut−$5.04M
Azora Capital LP1.98M$26.5M−$5.92MCut−$13.4M
VANGUARD CAPITAL MANAGEMENT LLC1.94M$25.9MHeld
Cresset Asset Management, LLC1.84M$24.6MNew
Fidelity1.81M$24.2M−$5.35MCut−$5.02M
ArrowMark Colorado Holdings LLC1.55M$20.7M−$4.63MCut−$6.2M
BAMCO INC /NY/1.21M$16.1M−$3.61MCut−$3.62M
Citadel1.14M$15.3M−$2.14MAdded$3.59M
Qube Research & Technologies Ltd930.9K$12.4MNew
JANE STREET GROUP, LLC860.7K$11.5MNew
SUSQUEHANNA INTERNATIONAL GROUP, LLP708K$9.46MNew
UBS Group AG685.6K$9.16M−$1.6MAdded$402.6K
G2 Investment Partners Management LLC372.8K$4.98M−$279.1KAdded$3.45M
Woodline Partners LP367.2K$4.91M−$590KAdded$1.68M
BNP PARIBAS FINANCIAL MARKETS305.2K$4.08M−$107KAdded$3.49M
MORGAN STANLEY287.2K$3.84M−$323.6KAdded$2.07M
Renaissance Technologies276.6K$3.7M−$217.4KAdded$2.51M
XTX Topco Ltd237.7K$3.18M−$317.7KAdded$1.44M
Squarepoint Ops LLC212.8K$2.84M−$595.2KCut−$411.9K
Owls Nest Partners IA, LLC209.7K$2.8MNew
SEVEN GRAND MANAGERS, LLC200K$2.67M−$598KCut−$598K
BANK OF AMERICA CORP /DE/180.2K$2.41M−$538.8KCut−$3.08M
Point72 Asset Management, L.P.166.7K$2.23MNew
BlackRock, Inc.165.6K$2.21M−$495KCut−$1.84M
CANNELL CAPITAL LLC156.1K$2.09MNew
Militia Capital Management LLC150K$2MHeld
Trexquant Investment LP149.1K$1.99MNew
Robertson Opportunity Capital, LLC135K$1.8MNew
MILLENNIUM MANAGEMENT LLC125.1K$1.67M−$374KCut−$1.3M
Schonfeld Strategic Advisors LLC113.8K$1.52M−$171.1KAdded$584.9K
BURKEHILL GLOBAL MANAGEMENT, LP100K$1.34M−$299KCut−$299K
Jain Global LLC86.4K$1.15M−$150.2KAdded$333.2K
Lighthouse Investment Partners, LLC85.4K$1.14M−$255.4KCut−$2.11M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC82.7K$1.1M−$177.6KAdded$133.2K
BOOTHBAY FUND MANAGEMENT, LLC78.7K$1.05M−$77.7KAdded$626K
Swiss National Bank77.9K$1.04M−$232.9KCut−$232.9K
Tiger Global75K$1M−$224.3KCut−$224.3K
SEI INVESTMENTS CO73.9K$987.8K−$113.3KAdded$368.1K
SummitTX Capital, L.P.63K$841.7K−$169.8KCut−$86.7K
Hudson Bay Capital Management LP55.3K$738.5K−$96.4KAdded$211.2K
Brevan Howard Capital Management LP54.4K$727KNew
STATE OF WISCONSIN INVESTMENT BOARD53.5K$714.3K−$75.6KAdded$301.1K
Interval Partners, LP49.5K$661.8K−$148.1KCut−$2.11M
VANGUARD FIDUCIARY TRUST CO48K$640.7KHeld
BARCLAYS PLC46.7K$623.8K−$31KAdded$454.2K
Engineers Gate Manager LP44K$588.1KNew
Jump Financial, LLC44K$587.9KNew
GOLDMAN SACHS GROUP INC41.7K$556.7K−$124.6KCut−$4.39M
Grandeur Peak Global Advisors, LLC39.6K$528.7K−$118.3KCut−$26M
Jefferies Financial Group Inc.39.2K$523.4K−$117.1KCut−$212K
Aquatic Capital Management LLC37.4K$500.1KNew
State Street37.3K$498.4K−$100.3KCut−$50.2K
Bank of New York Mellon Corp36.6K$488.4KNew
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM35K$467.2K−$104.6KCut−$104.6K
Catalyst Funds Management Pty Ltd34.9K$466.3KNew
Zurcher Kantonalbank (Zurich Cantonalbank)32.3K$431.5K−$96.6KCut−$96.6K
WELLS FARGO & COMPANY/MN28.9K$385.4KNew
Quadrature Capital Ltd28K$374.1K−$49.5KAdded$103.3K
VANGUARD ASSET MANAGEMENT, Ltd26.9K$358.8KHeld
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.26.8K$357.6K−$38.5KAdded$146.9K
JANUS HENDERSON GROUP PLC23.5K$314.5K−$69.6KCut−$69.6K
Centiva Capital, LP20.4K$273.1K−$61.1KCut−$1.81M
Legal & General Group Plc19.2K$256.1K−$57.3KCut−$238.9K
Entropy Technologies, LP17.9K$239.3KNew
NORTHERN TRUST CORP16.4K$219.4K−$44.3KCut−$22.9K
Man Group plc14.1K$189KNew
WINTON GROUP Ltd13.8K$184.4KNew
JONES FINANCIAL COMPANIES LLLP14.1K$183.7K−$60Added$183.4K
Graham Capital Management, L.P.13.6K$182KNew
LMR Partners LLP11.7K$155.9KNew
Tower Research Capital LLC (TRC)11.4K$152.2K−$279Added$150.7K
ARIZONA STATE RETIREMENT SYSTEM10.8K$144.8K−$32.4KCut−$32.7K
Vanguard Investments Australia, Ltd.10.7K$142.6KHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE10.2K$136.7KNew
Arcus Capital Partners, LLC10.1K$134.9KNew
WESBANCO BANK INC10K$133.6K−$29.9KCut−$29.9K
KLP KAPITALFORVALTNING AS8.5K$113.6K−$25.4KCut−$25.4K
ROYAL BANK OF CANADA7.73K$103K−$15.4KAdded$19K
CWM, LLC6.67K$89.1K$88.9KAdded$88.9K
PNC Financial Services Group, Inc.6.16K$82.3K−$10.6KAdded$24.3K
CITIGROUP INC3.83K$51.2K−$11.5KCut−$31.8K
OSAIC HOLDINGS, INC.3.5K$46.7K−$1.19KAdded$40.2K
State of Wyoming2.08K$27.7KNew
T. Rowe Price Investment Management, Inc.975.9K$13K−$2.92KCut−$2.92K
Federation des caisses Desjardins du Quebec750$10KNew
FIRST HORIZON CORP677$9.04K−$1.93KCut−$1.5K
Parallel Advisors, LLC666$8.9K−$1.99KCut−$1.99K
SIMPLEX TRADING, LLC558$7.45K−$1.67KCut−$18.1K
Rachor Investment Advisory Services, LLC209$2.79K−$404Added$585
SJS Investment Consulting Inc.164$2.19KNew
NATIONAL BANK OF CANADA /FI/144$1.92K−$432Cut−$432
Caitong International Asset Management Co., Ltd143$1.91KNew
Farther Finance Advisors, LLC124$1.6K−$427Cut−$918
GAMMA Investing LLC69$922−$27Added$775
MAI Capital Management27$361−$80Cut−$571
SBI Securities Co., Ltd.21$281−$62Cut−$1.37K
NATIXIS ADVISORS, LLC15.5K$207−$46Cut−$175
Rakuten Securities, Inc.1$13−$3Cut−$3

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.