| Balance Sheets | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 |
|---|---|---|---|---|
| Debt securities available for sale, at fair value-Fixed Maturities | 32,399 | 32,426 | 31,908 | 30,332 |
| Debt securities available for sale, at fair value-Short Term Investments | 2,638 | 2,625 | 2,351 | 2,788 |
| Equity securities, at fair value | 1,766 | 1,864 | 1,805 | 1,715 |
| Other investments, at fair value | 3,331 | 3,136 | 3,027 | 2,892 |
| Investments accounted for using the equity method | 6,652 | 6,453 | 6,232 | 6,566 |
| Total investments | 46,786 | 46,504 | 45,323 | 44,293 |
| Cash | 914 | 993 | 1,063 | 983 |
| Accrued investment income | 302 | 338 | 307 | 329 |
| Investment in operating affiliates | 1,330 | 1,313 | 1,417 | 1,356 |
| Premiums receivable (net of allowance for credit losses 39 and 43) | 6,526 | 5,723 | 6,450 | 7,067 |
| Reinsurance recoverable on unpaid and paid losses and loss adjustment expenses (net of allowance for credit losses 18 and 17) | 9,732 | 9,526 | 9,070 | 9,044 |
| Contractholder receivables (net of allowance for credit losses 7 and 7) | 2,253 | 2,270 | 2,287 | 2,280 |
| Ceded unearned premiums | 3,183 | 2,659 | 3,079 | 3,229 |
| Deferred acquisition costs | 1,774 | 1,717 | 1,786 | 1,814 |
| Receivable for securities sold | 643 | 180 | 695 | 390 |
| Gross balance | NaN | 620 | NaN | NaN |
| Accumulated amortization | NaN | -619 | NaN | NaN |
| Finite Lived Intangible Assets-Insurance Contracts Acquired In Business Combination | NaN | 1 | NaN | NaN |
| Gross balance | NaN | 117 | NaN | NaN |
| Accumulated amortization | NaN | -78 | NaN | NaN |
| Finite Lived Intangible Assets-Technology Based Intangible Assets | NaN | 39 | NaN | NaN |
| Gross balance | NaN | 865 | NaN | NaN |
| Accumulated amortization | NaN | -427 | NaN | NaN |
| Foreign currency movements and other adjustments | NaN | -21 | NaN | NaN |
| Customer Relationships-Finite Lived Intangible Assets | NaN | 417 | NaN | NaN |
| Gross balance | NaN | 606 | NaN | NaN |
| Foreign currency movements and other adjustments | NaN | 1 | NaN | NaN |
| Goodwill | NaN | 607 | NaN | NaN |
| Gross balance | NaN | 58 | NaN | NaN |
| Indefinitelived Intangible Assets-Licensing Agreements | NaN | 58 | NaN | NaN |
| Gross balance | NaN | 22 | NaN | NaN |
| Foreign currency movements and other adjustments | NaN | 1 | NaN | NaN |
| Indefinitelived Intangible Assets-Syndicate Capacity | NaN | 23 | NaN | NaN |
| Gross balance | NaN | 134 | NaN | NaN |
| Accumulated amortization | NaN | -57 | NaN | NaN |
| Finite Lived Intangible Assets-Other Intangible Assets | NaN | 77 | NaN | NaN |
| Goodwill and intangible assets | 1,190 | 1,222 | 1,268 | 1,319 |
| Other assets | 6,813 | 6,796 | 6,440 | 6,684 |
| Total assets | 81,446 | 79,241 | 79,185 | 78,788 |
| Reserve for losses and loss adjustment expenses | 34,105 | 33,547 | 32,822 | 32,089 |
| Unearned premiums | 10,939 | 10,100 | 11,124 | 11,625 |
| Reinsurance balances payable | 2,737 | 2,320 | 2,638 | 2,841 |
| Contractholder payables | 2,260 | 2,277 | 2,293 | 2,286 |
| Collateral held for insured obligations | 260 | 237 | 239 | 225 |
| Senior notes | 2,729 | 2,729 | 2,728 | 2,728 |
| Payable for securities purchased | 798 | 308 | 335 | 728 |
| Other liabilities | 3,430 | 3,517 | 3,287 | 3,225 |
| Total liabilities | 57,258 | 55,035 | 55,466 | 55,747 |
| Non-cumulative preferred shares | 830 | 830 | 830 | 830 |
| Common shares (0.0011 par, shares issued 602.3 and 599.8) | 1 | 1 | 1 | 1 |
| Additional paid-in capital | 2,831 | 2,735 | 2,682 | 2,660 |
| Retained earnings | 28,082 | 27,045 | 25,817 | 24,477 |
| Accumulated other comprehensive income (loss), net of deferred income tax | -333 | 5 | 0 | -48 |
| Common shares held in treasury, at cost (shares 249.4 and 240.8) | 7,223 | 6,410 | 5,611 | 4,879 |
| Total shareholders' equity available to arch | 24,188 | 24,206 | 23,719 | 23,041 |
| Total liabilities and shareholders' equity | 81,446 | 79,241 | 79,185 | 78,788 |
ARCH CAPITAL GROUP LTD. (ACGLN)
ARCH CAPITAL GROUP LTD. (ACGLN)