---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-280733"
form_type: "8-K"
ticker: "PTY"
cik: "0001190935"
company_name: "PIMCO CORPORATE & INCOME OPPORTUNITY FUND"
filed_at: "2026-06-24T17:25:56+00:00"
generated_at: "2026-06-24T17:27:27.478737+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# PIMCO Corporate & Income Opportunity Fund expands 80% policy to non-corporate issuers

## Summary
- Effective August 28, 2026, Fund must invest at least 80% of net assets in corporate debt and/or income-producing investments, including non-corporate issuers.
- New policy replaces prior 80% investment in corporate debt obligations of varying maturities.
- Income-producing investments now explicitly include dividend-paying equities, derivatives, and income-producing structures.
- Fund may not change the 80% Policy without at least 60 days' written notice to shareholders.
- Supplement updates prospectus and SAI to reflect the changes approved by Board on June 23, 2026.

## SEC filing metadata
- accession: 0001193125-26-280733
- form_type: 8-K
- ticker: PTY
- cik: 0001190935
- company_name: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
- filed_at: 2026-06-24T17:25:56+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1190935/000119312526280733/0001193125-26-280733-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1190935/000119312526280733/d120429d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-280733
- JSON: https://secwatch.observer/filing/0001193125-26-280733.json
- Plain text: https://secwatch.observer/filing/0001193125-26-280733.txt

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