Why Sectors Matter
Cyclical vs defensive, sector rotation through business cycles, and why a P/E of 30 means different things for SaaS vs utilities
In January 2022, NextEra Energy — a regulated utility — traded at a forward P/E of 30. Salesforce — an enterprise SaaS company growing revenue at 25% per year — also traded at a forward P/E of 30. A naive screener would call them identically valued.
Within eighteen months, NextEra had fallen 35% as rising rates crushed its debt-heavy capital structure, while Salesforce rallied 60% as its margins expanded and growth compounded. Same multiple, opposite outcomes. The number told you nothing without the sector context that gives it meaning.
Every sector has a different capital structure, growth profile, margin structure, and sensitivity to the macro cycle. A P/E ratio of 30 for a utility means investors are paying 30x stable but slow-growing earnings generated by a company with 60-70% debt-to-capital. The same 30x for a SaaS company means they're paying 30x rapidly growing earnings from a capital-light business with 80%+ gross margins and minimal debt.
That is the opening. Finishing a lesson is where it stops being interesting and starts being useful: the full lesson runs to 6 sections and ends with 5 practice questions. A free account is what opens the rest, and the other 255 lessons in the Academy with it. No card.
What this lesson covers
- 1The sector lens: why one number is never enough
- 2The same P/E, completely different stories
- 3Cyclical vs defensive: the business cycle split
- 4Sector rotation through the business cycle
- 5Why each sector has its own valuation language
- 6Two companies, same P/E, opposite quality