---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-078516"
form_type: "8-K"
ticker: "USO"
cik: "0001327068"
company_name: "United States Oil Fund, LP"
filed_at: "2026-06-29T12:16:43+00:00"
generated_at: "2026-06-29T12:20:31.570685+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# USO reports $270M net loss for May 2026 on unrealized futures losses; NAV ends at $128.02

## Summary
- Net loss of $270.1M for May 2026; unrealized loss on commodity futures of $304.2M.
- Net asset value per share at May 31, 2026: $128.02 on 13.5M shares.
- Total income (loss) negative $269M; realized trading gains of $65.6M offset by large unrealized losses.
- Net asset value decreased from $1.692B to $1.731B despite net creations of $309M from share issuance.

## SEC filing metadata
- accession: 0001104659-26-078516
- form_type: 8-K
- ticker: USO
- cik: 0001327068
- company_name: United States Oil Fund, LP
- filed_at: 2026-06-29T12:16:43+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1327068/000110465926078516/0001104659-26-078516-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1327068/000110465926078516/tm2617346d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-078516
- JSON: https://secwatch.observer/filing/0001104659-26-078516.json
- Plain text: https://secwatch.observer/filing/0001104659-26-078516.txt

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