Costco / Walmart Ratio
8.440 +0.63% close-to-close +9.0% YTD Close of Oct 20, 2026
A rising line means Costco is outperforming Walmart; a falling line means leadership is shifting the other way.
This free chart covers the last five years. Everything older, plus the CSV and JSON downloads, comes with a paid NASDUCK subscription.
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The latest values and a keyboard-readable date table are below the chart. CSV and JSON downloads are for NASDUCK paid members.
Use Price for the raw chart and % from view start when you want to compare the move across any chosen window. In percent mode, the first visible session becomes 0% and the scale stays linear. Log is available only when every loaded price is positive. Tip: drag to pan, scroll or pinch to zoom, and use Reset view to snap back quickly.
Dates & readable data
How To Read It
- A rising line means Costco is outperforming Walmart; a falling line means Walmart is taking the lead.
- Use shorter windows for tactical leadership changes and longer windows for regime shifts.
- The most important reversals are the ones that break a long trend, not just a single volatile day.
Breadth and sector charts tell you the weather. They just can't tell you which stock to hold for the next 10 days - that's the whole job of the Dig for Stocks algorithm.