---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-23-000052"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2023-04-26T23:59:59+00:00"
generated_at: "2026-06-16T15:12:27.244418+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Arch Capital Q1 net income $705M ($1.87/sh) vs $186M; book value up 8.4%

## Summary
- Net income $705M ($1.87/sh) vs $186M ($0.48/sh) in Q1 2022; after-tax operating income $654M ($1.73/sh).
- Gross premiums written $4.78B (+25.8% YoY); net premiums earned $2.88B (+35.9%).
- Combined ratio 80.6% vs 78.7% (cat losses $79M); underwriting income $570M (+24.5%).
- Book value per share $35.35, up 8.4% from Dec 2022; favorable prior year development $126M.
- Underwriting expense ratio improved to 29.6% from 31.5%.

## SEC filing metadata
- accession: 0000947484-23-000052
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2023-04-26T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748423000052/0000947484-23-000052-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748423000052/acgl-20230426.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-23-000052
- JSON: https://secwatch.observer/filing/0000947484-23-000052.json
- Plain text: https://secwatch.observer/filing/0000947484-23-000052.txt

## Key facts
- Earnings Releases
  ARCH CAPITAL GROUP LTD. reported the quarter ended March 31, 2023 results: net income $705 million, EPS $1.87 per share.
  - Period: the quarter ended March 31, 2023
  - Net income: $705 million
  - EPS: $1.87 per share
  - Result: reported results
  source text: Arch Capital Group Ltd. (NASDAQ: ACGL; “Arch” or “the Company”) announces its 2023 first quarter results. The results included: • Net income available to Arch common shareholders of $705 million, or $1.87 per share
  evidence_url: https://www.sec.gov/Archives/edgar/data/947484/000094748423000052/0000947484-23-000052-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.