correlation — daily-return correlation of two names
Return correlation between two names
The return correlation of UNH and AAPL: Pearson correlation of daily log-returns over approximately two years, with a 63-day recent window, R² and the beta of UNH on AAPL. Computed only where price history exists for both names.
UNHvsAAPL
-0.02
correlation over 501 trading days
95% CI -0.10 … +0.07 · n 501
Slightly negative — statistically indistinguishable from zero at this sample size.
Pearson r -0.02501 shared daily log-returns (~2y)Fisher 95% CI -0.10 … +0.07
Recent (63d)
+0.05
R²
0.00
β of UNH on AAPL
-0.03
Pearson correlation of daily log-returns over ~2 years and a recent 63-day window; the 63-day figure is a short window and varies more than the full-window figure. R² is the share of UNH's moves explained by AAPL; β on AAPL is the slope of UNH's daily returns regressed on AAPL's. Negative values are shown in green. Correlations typically rise toward 1 in a sell-off. Research — your decisions, your risk.