Compare

2 stocks, side by side
Relative performance · rebased to 100
AZNMRK
Pair ratio · AZN ÷ MRKRelative value, rich or cheap vs their own history

The price ratio AZN ÷ MRK with its 1Y mean and ±1σ / ±2σ bands; the z-score is how far the ratio sits from its average. A stretched reading flags one stock as rich vs the other relative to their history, but mean-reversion isn't guaranteed (a durable re-rating from better growth or margins can keep the ratio elevated). Research tooling, not advice.

AZNAstraZeneca PLCMRKMerck & Co.
Smart Score9/108/10
Price$185.68$120.60
1 month-0.81%-0.77%
1 year+34%+55%
5 year+77%+84%
P/E (TTM)27.733.8
P/E vs sector-12%-
Market cap$288.0B$281.2B
SectorHealthcareHealth Care
Risk / Return · past yearAnnualized return vs volatility, up-and-left is more reward for less risk.
Correlation · do they move together?Pairwise daily-return correlation over the past year, high = one bet, low = diversifying.