---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-23-000093"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2023-10-30T23:59:59+00:00"
generated_at: "2026-06-09T06:34:58.927139+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Arch Capital Q3 net income $713M ($1.88 EPS), operating income $876M, combined ratio 77.9%

## Summary
- Net income $713M ($1.88 diluted EPS) vs $7M ($0.02) in prior-year quarter; 20.2% annualized ROE.
- After-tax operating income $876M ($2.31/share) vs $106M ($0.28); 24.8% annualized operating ROE.
- Combined ratio improved to 77.9% from 97.3%; ex-cat & prior-year development ratio 77.0% vs 82.2%.
- Book value $38.62 per share, up 4.3% from June 30; net premiums written up 23.2% YoY to $3.4B.
- Underwriting income $721M vs $68M; gross premiums written $4.5B, net premiums earned $3.2B.

## SEC filing metadata
- accession: 0000947484-23-000093
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2023-10-30T23:59:59+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/947484/000094748423000093/0000947484-23-000093-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748423000093/acgl-20231030.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-23-000093
- JSON: https://secwatch.observer/filing/0000947484-23-000093.json
- Plain text: https://secwatch.observer/filing/0000947484-23-000093.txt

## Key facts
- Earnings Releases
  ARCH CAPITAL GROUP LTD. reported the quarter ended September 30, 2023 results: net income $713 million, EPS $1.88 per share.
  - Period: the quarter ended September 30, 2023
  - Net income: $713 million
  - EPS: $1.88 per share
  - Result: reported results
  source text: Net income available to Arch common shareholders of $713 million, or $1.88 per share, a 20.2% annualized net income return on average common equity
  evidence_url: https://www.sec.gov/Archives/edgar/data/947484/000094748423000093/0000947484-23-000093-index.htm

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