I do have some concerns about charting techniques that ignore time. Ignoring time can mean you miss out on significant events in the corporate history that did have an effect on the share price.
PET provides a good example of this. Trading in
PET shares was suspended for two years (Sept 20 - Sept 22) while the company sorted through the ramifications of internal fraud and mismanagement.
P&F charts don't show this and other charting techniques that ignore time won't show it either. Does this really matter? I say yes, because if you were a shareholder waiting two years for the suspension to end, it matters. In this example of
PET, there was no consolidation of shares or massive capital reconstruction done before the resumption of trading. If there had been, then all the support/resistance levels prior to the suspension would be invalid now.
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Recent support/resistance levels are relevant. But the only concern now for holders is the pending news. Will it be addressing past issues or future ones.