---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-26-000051"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2026-04-28T23:59:59+00:00"
generated_at: "2026-05-15T03:38:53.916379+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Arch Capital Q1 net income $1.0B ($2.88 EPS); operating ROE 15.4%

## Summary
- Net income $1.0B vs $564M in Q1 2025; diluted EPS $2.88 vs $1.48.
- After-tax operating income $901M ($2.50 per share); annualized operating ROE 15.4%.
- Combined ratio 81.7% (82.3% ex-cat & prior-year development); prior-year reserve favorable development of $200M.
- Share repurchases of $783M during Q1; book value per share $66.19 (+1.7% from Dec 2025).
- Gross premiums written $6.4B (flat YoY); net premiums earned $4.0B (-4.8% YoY).

## SEC filing metadata
- accession: 0000947484-26-000051
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2026-04-28T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748426000051/0000947484-26-000051-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748426000051/acgl-20260428.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-26-000051
- JSON: https://secwatch.observer/filing/0000947484-26-000051.json
- Plain text: https://secwatch.observer/filing/0000947484-26-000051.txt

## Key facts
- Earnings Releases
  ARCH CAPITAL GROUP LTD. reported the quarter ended March 31, 2026 results: net income $1.0 billion, EPS $2.88 per share.
  - Period: the quarter ended March 31, 2026
  - Net income: $1.0 billion
  - EPS: $2.88 per share
  - Result: reported results
  source text: Group Ltd. (NASDAQ: ACGL; “Arch,” “our” or “the Company”) announces its 2026 first quarter results. The results included: • Net income available to Arch common shareholders of $1.0 billion, or $2.88 per share, representing a 17.8% annualized net income return on average common equity, compared to net income available to Arch common shareholders of $564 million, or
  evidence_url: https://www.sec.gov/Archives/edgar/data/947484/000094748426000051/0000947484-26-000051-index.htm

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