Vault-13

ACCELERANT HOLDINGS ARX

CL A · Common Stock · CUSIP G00894108

88 institutional holders
50,790,78450.8m shares reported held*
$751.0mreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.0m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $14.79. Options: 3 managers hold calls ($358.8k notional), 3 hold puts ($1.8m).

Trends to Q3 2025

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5m$2mQ4 24 calls: $0Q4 24 puts: $0Q4 24P/C —Q1 25 calls: $0Q1 25 puts: $0Q1 25P/C —Q2 25 calls: $0Q2 25 puts: $0Q2 25P/C —Q3 25 calls: $358.8kQ3 25 puts: $1.8mQ3 25P/C 5.00
Numbers
QuarterCallsPutsP/C
Q4 2024$0$0—
Q1 2025$0$0—
Q2 2025$0$0—
Q3 2025$358.8k$1.8m5.00

Biggest buyers

SECURITY BENEFIT LIFE INSURANCE CO /KS/ New +5,866,257+5.9m
Capital World Investors New +5,753,250+5.8m
GILDER GAGNON HOWE & CO LLC New +3,898,272+3.9m
JPMORGAN CHASE & CO New +3,221,726+3.2m
BARINGS LLC New +3,128,867+3.1m
ALLIANCEBERNSTEIN L.P. New +2,789,084+2.8m
T. Rowe Price Investment Management, Inc. New +2,355,801+2.4m
BlackRock, Inc. New +2,306,701+2.3m
VANGUARD GROUP INC New +2,248,607+2.2m
Balyasny Asset Management L.P. New +2,018,784+2.0m

Biggest sellers

None

Biggest calls

CITADEL ADVISORS LLC New $269.5k18.1k shares
SIMPLEX TRADING, LLC New $55.0k3.7k shares
GROUP ONE TRADING LLC New $34.2k2.3k shares

Biggest puts

CITADEL ADVISORS LLC New $1.3m84.9k shares
GROUP ONE TRADING LLC New $512.2k34.4k shares
SIMPLEX TRADING, LLC New $17.0k1.2k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
ACP Accelerant Holdings, L.P. 13G · exempt (held before listing) new · filed 2025-11-14 44.2% new 90.9m≈ $1.1bn 2025-11-14
RADKE JEFFREY L 13G · exempt (held before listing) new · filed 2025-11-14 29.9% new 36.8m≈ $430.7m 2025-11-14
Lee-Smith Christopher 13G · exempt (held before listing) new · filed 2025-11-14 17.4% new 20.4m≈ $238.9m 2025-11-14
ONeill Francis James 13G · exempt (held before listing) new · filed 2025-11-14 7.0% new 8.1m≈ $94.7m 2025-11-14
GLAZER CAPITAL, LLC 13G · passive investor new · filed 2026-09-30 5.0% new 6.0m≈ $70.0m 2026-09-30

Fell to 5% or below in the last year: Capital World Investors (4.4%, 2026-05-14)

Insider purchases and sales in Q3 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q4 23: 0 buyingQ4 23: 0 sellingQ1 24: 0 buyingQ1 24: 0 sellingQ1 24Q2 24: 0 buyingQ2 24: 0 sellingQ3 24: 0 buyingQ3 24: 0 sellingQ3 24Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 1 buyingQ3 25: 1 sellingQ3 25
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20230—0——
Q1 20240—0——
Q2 20240—0——
Q3 20240—0——
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20251$10.5k1$243.5m—
DateInsiderTradeSharesPrice ValueTheir holding
2025-07-25 Schwartz Keoni Andrew +2 Director · See Footnote Sold 11,596,152 $21.00 $243.5m11.6m shares -100%
2025-07-25 Hasley Nancy General Counsel, director Bought 500 $21.00 $10.5k500 shares new

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 SECURITY BENEFIT LIFE INSURANCE CO /KS/ 32.51% of their portfolio TOPEKA, KS 5,866,2575.9m $80.8m $80.8m 32.51% New
2 Capital World Investors 0.01% of their portfolio LOS ANGELES, CA 5,753,2505.8m $85.7m $85.7m 0.01% New
3 GILDER GAGNON HOWE & CO LLC 0.59% of their portfolio New York, NY 3,898,2723.9m $58.0m $58.0m 0.59% New
4 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,221,7263.2m $48.0m $48.0m 0.00% New
5 BARINGS LLC 0.88% of their portfolio CHARLOTTE, NC 3,128,8673.1m $46.4m $46.4m 0.88% New
6 ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio NASHVILLE, TN 2,789,0842.8m $41.5m $41.5m 0.01% New
7 T. Rowe Price Investment Management, Inc. 0.02% of their portfolio BALTIMORE, MD 2,355,8012.4m $35.1m $35.1m 0.02% New
8 BlackRock, Inc. 0.00% of their portfolio New York, NY 2,306,7012.3m $34.3m $34.3m 0.00% New
9 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,248,6072.2m $33.5m $33.5m 0.00% New
10 Balyasny Asset Management L.P. 0.06% of their portfolio Chicago, IL 2,018,7842.0m $30.1m $30.1m 0.06% New
11 BAMCO INC /NY/ 0.05% of their portfolio NEW YORK, NY 1,218,3091.2m $18.1m $18.1m 0.05% New
12 ArrowMark Colorado Holdings LLC 0.29% of their portfolio Denver, CO 1,031,6041.0m $15.4m $15.4m 0.29% New
13 Driehaus Capital Management LLC 0.11% of their portfolio Chicago, IL 1,011,9401.0m $15.1m $15.1m 0.11% New
14 Grandeur Peak Global Advisors, LLC 1.89% of their portfolio SALT LAKE CITY, UT 945,929945.9k $14.1m $14.1m 1.89% New
15 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 922,087922.1k $13.7m $13.7m 0.01% New
16 AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio KANSAS CITY, MO 912,825912.8k $13.6m $13.6m 0.01% New
17 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 872,080872.1k $13.0m $13.0m 0.01% New
18 NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio NEW YORK, NY 746,117746.1k $11.1m $11.1m 0.01% New
19 Azora Capital LP 0.43% of their portfolio MIAMI, FL 627,118627.1k $9.3m $9.3m 0.43% New
20 FMR LLC 0.00% of their portfolio BOSTON, MA 558,645558.6k $8.3m $8.3m 0.00% New
21 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 543,284543.3k $8.1m $8.1m 0.00% New
22 FRED ALGER MANAGEMENT, LLC 0.03% of their portfolio NEW YORK, NY 520,915520.9k $7.8m $7.8m 0.03% New
23 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 510,380510.4k $7.6m $7.6m 0.00% New
24 Journey Advisory Group, LLC 0.58% of their portfolio COVINGTON, KY 432,526432.5k $7.9m $7.9m 0.58% New
25 Ghisallo Capital Management LLC 0.21% of their portfolio BOSTON, MA 425,000425.0k $6.3m $6.3m 0.21% New
26 CenterBook Partners LP 0.28% of their portfolio GREENWICH, CT 382,645382.6k $5.7m $5.7m 0.28% New
27 Dragoneer Investment Group, LLC 0.11% of their portfolio SAN FRANCISCO, CA 336,361336.4k $5.0m $5.0m 0.11% New
28 Walleye Capital LLC 0.04% of their portfolio NEW YORK, NY 299,800299.8k $4.5m $4.5m 0.04% New
29 Verition Fund Management LLC 0.02% of their portfolio GREENWICH, CT 272,240272.2k $4.1m $4.1m 0.02% New
30 LMR Partners LLP 0.05% of their portfolio LONDON, X0 260,000260.0k $3.9m $3.9m 0.05% New
31 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 229,895229.9k $3.4m $3.4m 0.01% New
32 SOROS FUND MANAGEMENT LLC 0.05% of their portfolio NEW YORK, NY 225,000225.0k $3.4m $3.4m 0.05% New
33 Interval Partners, LP 0.07% of their portfolio NEW YORK, NY 217,010217.0k $3.2m $3.2m 0.07% New
34 Davidson Kempner Capital Management LP 0.04% of their portfolio New York, NY 208,600208.6k $3.1m $3.1m 0.04% Not comparable
35 Blackstone Inc. 0.01% of their portfolio NEW YORK, NY 200,000200.0k $3.0m $3.0m 0.01% New
36 SEVEN GRAND MANAGERS, LLC 0.24% of their portfolio BRONXVILLE, NY 200,000200.0k $3.0m $3.0m 0.24% New
37 Jain Global LLC 0.04% of their portfolio NEW YORK, NY 200,000200.0k $3.0m $3.0m 0.04% New
38 TEACHER RETIREMENT SYSTEM OF TEXAS 0.01% of their portfolio AUSTIN, TX 175,000175.0k $2.6m $2.6m 0.01% New
39 Lighthouse Investment Partners, LLC 0.09% of their portfolio Palm Beach Gardens, FL 172,311172.3k $2.6m $2.6m 0.09% New
40 Schonfeld Strategic Advisors LLC 0.02% of their portfolio NEW YORK, NY 156,662156.7k $2.3m $2.3m 0.02% New
41 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 156,471156.5k $2.3m $2.3m 0.00% New
42 Centiva Capital, LP 0.21% of their portfolio New York, NY 151,033151.0k $2.2m $2.2m 0.21% New
43 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 150,700150.7k $2.2m $2.2m 0.00% New
44 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.00% of their portfolio TORONTO, A6 150,000150.0k $2.2m $2.2m 0.00% New
45 Woodline Partners LP 0.01% of their portfolio San Francisco, CA 145,413145.4k $2.2m $2.2m 0.01% New
46 UBS Group AG 0.00% of their portfolio ZURICH, V8 124,025124.0k $1.8m $1.8m 0.00% New
47 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 105,215105.2k $1.6m $1.6m 0.00% New
48 Burkehill Global Management, LP 0.08% of their portfolio NEW YORK, NY 100,000100.0k $1.5m $1.5m 0.08% New
49 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 94,34794.3k $1.4m $1.4m 0.00% New
50 Pembroke Management, LTD 0.14% of their portfolio Montreal, A8 93,78593.8k $1.4m $1.4m 0.14% New
51 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 90,09990.1k $1.3m $1.3m 0.00% New
52 Hudson Bay Capital Management LP 0.01% of their portfolio STAMFORD, CT 84,29884.3k $1.3m $1.3m 0.01% New
53 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 76,30076.3k $1.1m $1.1m 0.00% New
54 TIGER GLOBAL MANAGEMENT LLC 0.00% of their portfolio New York, NY 75,00075.0k $1.1m $1.1m 0.00% New
55 TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio STAMFORD, CT 72,17372.2k $1.1m $1.1m 0.01% New
56 Allianz Asset Management GmbH 0.00% of their portfolio MUNICH, 2M 71,39971.4k $1.1m $1.1m 0.00% New
57 Quadrature Capital Ltd 0.01% of their portfolio LONDON, X0 70,75970.8k $1.1m $1.1m 0.01% New
58 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 66,39166.4k $988.6k $988.6k 0.01% New
59 XTX Topco Ltd 0.05% of their portfolio LONDON, X0 63,86563.9k $951.0k $951.0k 0.05% New
60 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 55,36555.4k $824.4k $824.4k 0.00% New
61 PICTON MAHONEY ASSET MANAGEMENT 0.01% of their portfolio Toronto, A6 52,34952.3k $780.0k $780.0k 0.01% New
62 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 41,69441.7k $620.8k $620.8k 0.00% New
63 Limestone Investment Advisors LP 0.27% of their portfolio NEW YORK, NY 40,90040.9k $609.0k $609.0k 0.27% New
64 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 40,07240.1k $596.7k $596.7k 0.00% New
65 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 35,90835.9k $534.7k $534.7k 0.00% New
66 3G Capital Partners LP 0.12% of their portfolio NEW YORK, NY 35,00035.0k $521.1k $521.1k 0.12% New
67 SummitTX Capital, L.P. 0.02% of their portfolio FORT WORTH, TX 31,92031.9k $475.3k $475.3k 0.02% New
68 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 30,00030.0k $446.7k $446.7k 0.00% New
69 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 29,93029.9k $445.7k $445.7k 0.00% New
70 Oribel Capital Management, LP 0.03% of their portfolio NEW YORK, NY 25,90025.9k $385.7k $385.7k 0.03% New
71 Crestwood Capital Management, L.P. 0.21% of their portfolio NEW YORK, NY 20,00020.0k $297.8k $297.8k 0.21% New
72 PharVision Advisers, LLC 0.14% of their portfolio BOCA RATON, FL 16,27316.3k $242.3k $242.3k 0.14% New
73 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 11,07411.1k $164.9k $164.9k 0.00% New
74 Graham Capital Management, L.P. 0.01% of their portfolio ROWAYTON, CT 10,51010.5k $156.5k $156.5k 0.01% New
75 Jefferies Financial Group Inc. 0.00% of their portfolio NEW YORK, NY 10,00010.0k $148.9k $148.9k 0.00% New
76 Legal & General Group Plc 0.00% of their portfolio London, X0 10,00010.0k $149.0k $149.0k 0.00% New
77 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 8,3378.3k $124.1k $124.1k 0.00% New
78 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 2,8242.8k $42.0k $42.0k 0.00% New
79 Quarry LP 0.01% of their portfolio NEW YORK, NY 2,6972.7k $40.2k $40.2k 0.01% New
80 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,8681.9k $27.8k $27.8k 0.00% New
81 Point72 Europe (London) LLP 0.00% of their portfolio LONDON, X0 787787 $11.7k $11.7k 0.00% New
82 Aster Capital Management (DIFC) Ltd 0.00% of their portfolio DUBAI, C0 477477 $7.1k $7.1k 0.00% New
83 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 335335 $5.0k $5.0k 0.00% New
84 FIRST HORIZON CORP 0.00% of their portfolio MEMPHIS, TN 294294 $4.4k $4.4k 0.00% First filing
85 PRINCIPAL SECURITIES, INC. 0.00% of their portfolio DES MOINES, IA 250250 $3.7k $3.7k 0.00% New
86 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 167167 $2.5k $2.5k 0.00% New
87 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 125125 $1.8k $1.8k 0.00% New
88 Rakuten Securities, Inc. 0.00% of their portfolio TOKYO, M0 11 $15 $15 0.00% New