KST fluctuates above/below the zero line. At its most basic, momentum favors the bulls when KST is positive and the bears when KST is negative.
Even though there are many different signals possible with KST , the basic centerline and signal line crossovers are usually the most robust. Unlike and the Oscillator, KST does not have upper or lower limits. This makes it relatively ill-suited for overbought and oversold signals.
I added the possibility to add on the chart a 2nd timeframe for confirmation.
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In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.