Verified anchors

  • 1959 - founding or lineage field in the current constituent metadata.
  • 2017-07-26 - S&P 500 addition date for PKG in the constituent registry.
  • 2026-09-15 - current S&P 500 Equal Weight snapshot date used by this package.

Founding and predecessor businesses Research this stage specifically for Packaging Corporation of America. Add an

event only when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Initial public-market history Research this stage specifically for Packaging Corporation of America. Add an event

only when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Major products or market entries Research this stage specifically for Packaging Corporation of America. Add an event

only when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Transformative acquisitions and divestitures Research this stage specifically for Packaging Corporation of America.

Add an event only when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Restructurings and spin-offs Research this stage specifically for Packaging Corporation of America. Add an event

only when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Leadership transitions Research this stage specifically for Packaging Corporation of America. Add an event only when

a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Regulatory or legal turning points Research this stage specifically for Packaging Corporation of America. Add an

event only when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Crises and recoveries Research this stage specifically for Packaging Corporation of America. Add an event only when

a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Strategic pivots Research this stage specifically for Packaging Corporation of America. Add an event only when a

primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

Current-era operating model Research this stage specifically for Packaging Corporation of America. Add an event only

when a primary or high-quality authoritative source establishes the date and significance. Explain why the event changed the economics, not merely that it happened. Link material events to the current business model, segment mix, capital structure, competitive position, or risk profile.

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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