There is no evidence of a shift in trend yet. The trend for the last 252 days is up .73 from the close and down .69 from the close which is still an up trend including all gaps.
The trend based on the open when comparing the high and the low to the open is up .66 and down .61.
Net move is still up.
That being said anything over 168.97 is something considered an extension to really not buy today. Why would you buy anything greater than 168.97 or 168.70? Because you had to or you don't know the statistical averages of price. So if you did go long above that you better hope that some one comes in and wants it or else you lose.