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not sure how Wave Trend Indicator works

Refering to https://www.tradingview.com/script/2KE8wTuF-Indicator-WaveTrend-Oscillator-WT/, I couldn't understand fully how it works.
The idea might be to determine the overbought and oversold level, and when it cross overbought level, we sell the securities, vice versa.
I tried few times on AAPL stock and I set the level as +-25, otherwise it doesn't generate few transactions. But how do we determine the level? And it turns out that it always generate negative return. If I operate it oppositely, for example, sell when it cross the oversold level, the return is positive.

1 response

The opposite way of doing it