---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-26-000118"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2026-07-28T20:04:34+00:00"
generated_at: "2026-07-28T20:06:44.129095+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Arch Capital Q2 net income falls to $1.0B from $1.2B; combined ratio worsens to 83.5%

## Summary
- Net income available to common shareholders $1.0B ($3.00/diluted share) vs $1.2B ($3.23) in Q2 2025.
- After-tax operating income $893M ($2.56/share) vs $979M ($2.58) in prior year.
- Combined ratio 83.5% vs 81.2% a year ago; ex-cat and prior year development 82.5% vs 80.9%.
- Gross premiums written $6.1B (-1.1% YoY); net premiums written $4.0B (-6.9%).
- Book value per share $68.04, up 2.8% from Q1; share repurchases $1.2B in quarter.

## SEC filing metadata
- accession: 0000947484-26-000118
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2026-07-28T20:04:34+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748426000118/0000947484-26-000118-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748426000118/acgl-20260728.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-26-000118
- JSON: https://secwatch.observer/filing/0000947484-26-000118.json
- Plain text: https://secwatch.observer/filing/0000947484-26-000118.txt

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