---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-218603"
form_type: "8-K"
ticker: "DBC"
cik: "0001328237"
company_name: "Invesco DB Commodity Index Tracking Fund"
filed_at: "2025-09-26T23:59:59+00:00"
generated_at: "2026-05-17T05:32:10.105801+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# DBC's underlying index methodology updated effective November 10, 2025

## Summary
- Expanded commodity universe: eligible commodities determined annually based on liquidity and economic importance.
- Modified Optimum Yield methodology to eliminate contracts with limited liquidity.
- Annual rules-based review of base weights and commodities to reflect global production and market liquidity.
- Sector and single commodity caps and floors implemented annually at rebalance to reduce concentration risk.
- Intra-year rebalance triggered on monthly observation date if large deviation from annual target weights.

## SEC filing metadata
- accession: 0001193125-25-218603
- form_type: 8-K
- ticker: DBC
- cik: 0001328237
- company_name: Invesco DB Commodity Index Tracking Fund
- filed_at: 2025-09-26T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1328237/000119312525218603/0001193125-25-218603-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1328237/000119312525218603/d908863d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-218603
- JSON: https://secwatch.observer/filing/0001193125-25-218603.json
- Plain text: https://secwatch.observer/filing/0001193125-25-218603.txt

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