Premiums and Revenues - Gross premiums written increased by 11.9% to 4,756millionforthethreemonthsendedDecember31,2024,comparedto4,251 million in the same period of 2023[12]. - Net premiums written rose by 17.1% to 3,819millionforthethreemonthsendedDecember31,2024,upfrom3,261 million in the prior year[12]. - Net premiums earned for Q4 2024 reached 4,143million,up23.93,344 million in Q4 2023[17]. - Total revenues for Q4 2024 were 4,548million,anincreaseof14.43,975 million in Q4 2023[17]. - Gross premiums written totaled 4,756million,withtheinsurancesegmentcontributing2,484 million, reinsurance 1,941million,andmortgage331 million[34]. - Net premiums earned for the year ended December 31, 2024, reached 15,100million,asignificantincreasefrom12,440 million in 2023, reflecting a growth of 21.3%[75]. - Total net premiums written for the year ended December 31, 2024, reached 7,746million,a17.96,554 million in 2023[51]. Income and Profitability - Net income available to Arch common shareholders decreased by 60.2% to 925millionforthethreemonthsendedDecember31,2024,downfrom2,324 million in the prior year[12]. - After-tax operating income available to Arch common shareholders was 866millionforthethreemonthsendedDecember31,2024,an8.4945 million in the same period of 2023[12]. - Comprehensive income available to Arch decreased by 86.7% to 415millionforthethreemonthsendedDecember31,2024,comparedto3,111 million in the prior year[12]. - Net income attributable to Arch for Q4 2024 was 925million,adecreaseof60.32,324 million in Q4 2023[17]. - The company reported a net income available to common shareholders of 4,403millionfortheyearendedDecember31,2023[42].RatiosandPerformanceMetrics−Thecombinedratioincreasedto85.0405 million for the three months ended December 31, 2024, compared to 313millioninthesameperiodof2023[12].−Thecompanyreportednetrealizedlossesof161 million during the same period[34]. - Total investable assets amounted to 41,388million,withtotalassetsat70,906 million and total liabilities at 50,086million[34].−Thecompanyreportedgrossinvestmentincomeof428 million for the three months ended December 31, 2024, compared to 332millionforthesameperiodin2023,reflectingayear−over−yearincreaseof28.927,889 million, a decrease from 29,531milliononSeptember30,2024[89].LiabilitiesandEquity−Thecompanyreportedtotalassetsof70,906 million as of December 31, 2024, up from 58,906millionayearearlier,representinga20.450,086 million as of December 31, 2024, compared to 40,551millionayearearlier,markinga23.519.990 billion from 21.444billioninSeptember2024[121].−TotalcapitalavailabletoArchis23.548 billion, down from 25.001billioninSeptember2024[121].MortgageInsuranceMetrics−U.S.primarymortgageinsurancenetpremiumswrittenwere208 million for the three months ended December 31, 2024, representing 75.1% of total net premiums written[59]. - Insurance in force (IIF) for U.S. primary mortgage insurance was 290,435millionasofDecember31,2024,accountingfor58.076,034 million, a slight decrease from 76,448milliononSeptember30,2024[62].ShareRepurchaseandCapitalManagement−Aggregatecostofsharesrepurchasedinthequarteris23.5 million, with 0.3 million shares repurchased at an average price of 89.65pershare[123].−Remainingsharerepurchaseauthorizationis976.5 million[123]. - Cumulative shares repurchased since the program's inception total 433.8 million[123].