Core Viewpoint - Arch Capital Group Ltd. (ACGL) reported a first-quarter 2025 operating income of 1.54pershare,exceedingtheZacksConsensusEstimateby12.46.4 billion, while net premiums written rose by 10.5% year over year to 4.5billion,drivenbyhigherpremiumsinbothInsuranceandReinsurancesegments[2].−Netinvestmentincomegrewby15.6378 million, although it fell short of the estimate of 436.2million,influencedbyareductionininvestableassetsduetoa1.9 billion special cash dividend paid in December 2024 and higher investment expenses [3]. Revenue and Losses - Operating revenues reached 4.5billion,markinga21.2547 million, significantly higher than the previous year's loss of 58million.Underwritingincomedeclinedby43.3417 million [4]. - The combined ratio, indicating the percentage of premiums paid out as claims and expenses, worsened by 1,130 basis points to 90.1, compared to the estimate of 94.5 [5]. Segment Performance - In the Insurance segment, gross premiums written rose by 24.4% year over year to 2.6billion,withnetpremiumswrittenclimbing25.41.9 billion, driven by new business opportunities and rate changes, despite competitive market pressures [6]. - The Reinsurance segment saw gross premiums written increase by 0.8% year over year to 3.5billion,whilenetpremiumswrittenroseby2.22.3 billion, primarily due to rate increases and growth in existing accounts, although offset by reductions in specialty lines [7][8]. - The Mortgage segment experienced a decline, with gross premiums written dropping by 4.4% year over year to 326millionandnetpremiumswrittendecreasingby4266 million, attributed to lower mortgage originations [9]. Financial Position - As of March 31, 2025, the company had cash of 1.2billion,a21.22.7 billion. Book value per share was $55.15, up 3.8% from the end of 2024, while annualized operating return on average common equity contracted by 920 basis points year over year to 11.5% [11].