@techreport{blackridge_portfolio_risk_aggregation_20261005,
  author      = {{BlackRidge}},
  title       = {{Corporate Credit Risk Aggregation}},
  institution = {BlackRidge},
  type        = {Research report},
  year        = {2026},
  url         = {https://blckridge.com/research/portfolio-risk-aggregation-20261005/},
  note        = {Research synthesis. Original sources are credited in the report.}
}