References

  • SEC filings for Packaging Corporation of America: https://www.sec.gov/edgar/browse/?CIK=75677&owner=exclude
  • S&P 500 Equal Weight Index: https://www.spglobal.com/spdji/en/indices/equity/sp-500-equal-weight-index/
  • S&P U.S. Indices Methodology: https://www.spglobal.com/spdji/en/documents/methodologies/methodology-sp-us-indices.pdf

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