diff --git a/strategies/high-volume-days/README.md b/strategies/high-volume-days/README.md
index 204793f..17ec6e5 100644
--- a/strategies/high-volume-days/README.md
+++ b/strategies/high-volume-days/README.md
@@ -4,4 +4,20 @@ The idea for these strategies comes from chapter 6 (Volume) of [*How Markets Rea
 
 As with most of the strategies from this book, they are meant to illustrate certain characteristics of the market rather than be traded directly.
 
+## Rules
+
+### High Volume Up Days
+
+1. The asset (e.g., SPY) is above its 200-day moving average.
+2. The volume closes at a 5-day high.
+3. If the asset closes **higher** on the day, enter a long trade.
+4. Exit the trade after 5 trading days (~1 week).
+
+### High Volume Down Days
+
+1. The asset (e.g., SPY) is above its 200-day moving average.
+2. The volume closes at a 5-day high.
+3. If the asset closes **lower** on the day, enter a long trade.
+4. Exit the trade after 5 trading days (~1 week).
+
 ---
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