It's hard to find entries on ultra strong stocks like this. But looking at the weekly chart we see that the median of the fork created by the 2008 crisis has not been touched in a long time.

This gives an idea to match that median with a low volume zone on the volume profile. Should another global financial crisis arise then it may make a similar buying opportunity.

$270 may seem like a long way to fall for such a blue chip stock but it's not impossible considering it went from about $100 to $45 in 2008.

It is currently near the upper fork extension of so it could be considered over extended.
Chart PatternsPitchforks

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