📖William Gann
Trend Definition
Trend is defined by sequence of higher or lower extremes.
A trend is defined by higher highs and higher lows in an uptrend, lower highs and lower lows in a downtrend. Never trade against the main trend.
🏠 Everyday Analogy
📖 Core Interpretation
Trend identification is the foundation of successful trading
💎 Key Insight：In an uptrend, each high is higher than the previous high, and each low is higher than the previous low. In a downtrend, the pattern reverses. This simple but powerful concept helps traders identify trend direction and potential reversals. When the pattern breaks (higher high fails or lower low fails), it signals the trend may be changing.
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❓ Why It Matters
Gann emphasized that fighting the trend is the quickest way to lose money
🎯 How to Practice
Use swing highs and lows to identify trend direction; trade with the trend
🎙️ Master's Voice
Buy on strength and sell on weakness. Follow the trend until it clearly reverses.
Gann was a trend follower. He bought markets showing strength and sold those showing weakness. He stayed with trends until clear evidence of reversal appeared.
⚔️ Practical Guide
✅ Decision Checklist
- Is this market showing strength or weakness?
- Am I following or fighting the trend?
- Is there evidence of trend reversal?
📋 Action Steps
- Identify the dominant trend
- Trade in the direction of the trend
- Wait for clear reversal signals
🚨 Warning Signs
- Fighting the trend
- Calling reversals prematurely
- Ignoring trend direction
⚠️ Common Pitfalls
Treating short rebounds as full cycle turns
Extrapolating peak conditions indefinitely
Becoming maximally defensive near valuation troughs
📚 Case Studies
1
Pre-Crash Dow Trend Reversal (1929)
Using Gann’s trend definition, a series of lower tops and lower bottoms on the Dow in late 1929 signaled a primary downtrend before the October crash.
✨ Outcome：An investor respecting the new downtrend would have exited early, avoiding the bulk of the crash losses.
2
Dot-Com Bubble Peak (2000)
The NASDAQ in early 2000 broke its prior swing lows, forming a clear downtrend per Gann’s rule of lower highs and lower lows after a parabolic rise.
✨ Outcome：Investors who sold when the trend reversed sidestepped years of heavy tech stock drawdowns.
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