tech vs utilities
US tech · US utilities — 1-year correlation swings -0.22 to +0.82
1-year rolling correlation · green together, red apartas of 2026-09-11
- +0.39normally
- +0.53in crashes
- -0.22 ~ +0.821-year range
- 1.43positions if held 50/50
The sign flips with the era
The one-year correlation swings from -0.22 to +0.82. Green is the stretches they moved together, red the stretches they moved apart.
So a single long-run average describes this pair badly. Which regime you are in right now matters more than the average.
Try it on your own portfolio
Opens with these two already entered. Add what you hold and the vs the rest and New columns answer whether to add one more.
Open with US tech · US utilitiesWeekly returns, 611 weeks since 2015, every price converted to USD. “Crashes” means the 5% of weeks US tech fell hardest. One sample, one window — not a promise about the future.