Pair · Stocks & ETFs
Apple vs Microsoft
As of 22 Oct 2026, Apple (AAPL) and Microsoft (MSFT) have a 120-day daily-return correlation of 0.11 — little to no relationship. Their prices passed the Engle–Granger cointegration test at the 5% level, so the ratio between them has tended to pull back toward its usual level.
Last updated 22 Oct 2026 · data through the 22 Oct 2026 UTC daily candle
The working detail for AAPL/MSFT
- Hedge ratio and mean-reversion half-life
- Live spread z-score with a ±2σ band — how stretched the pair is today
- Rolling history of the relationship, and the days it breaks down
- Pass/fail gates and a composite score across every tracked pair
Common questions
Are Apple and Microsoft correlated?
As of 22 Oct 2026, the correlation between AAPL and MSFT daily returns over the last 120 days is 0.11 (little to no relationship). Near 1 means they usually move the same way on the same day; near 0, independently; below 0, in opposite directions.
Are AAPL and MSFT cointegrated?
Yes. As of 22 Oct 2026, their prices passed the Engle–Granger cointegration test at the 5% level over the last 120 days. The test is re-run every day on fresh prices, so the answer can change.
What’s the difference between correlation and cointegration?
Correlation measures whether two assets’ daily returns move together. Cointegration asks something stronger: whether the gap between their prices — their ratio — is tethered and tends to pull back toward its usual level. Two assets can be highly correlated yet drift apart for months; that is correlation without cointegration.