Monthly Return Guide
Use this guide to read 10-year calendar-month seasonality for major indices so you can quickly see which months have historically helped and which months have lagged.
Overview
How to use Monthly Return Guide
Start with the strongest and weakest month cards
Use the overview cards first to see where seasonality has historically helped and hurt each index.
Check the horizontal return band chart
The bar shows the average return, while the deviation band shows how noisy that month has been around the average.
Confirm with the yearly heatmap
A strong average month is more trustworthy when the heatmap shows support across multiple years instead of one big outlier.
Use the ranking table last
Compare win rate, median return, and best/worst outcomes so you do not confuse a volatile month with a dependable one.
Common mistakes to avoid
Best way to use this playbook
Use the page to narrow the market quickly, then promote only the strongest chart-plus-context setups into your active watchlist or research queue.