AMZN's weekly chart is quite a specimen as it has quadrupled from 300 to 1200 in three years.
click on image to enlarge
Typically after a big stock has had such a massive run a breakout above its upper channel line, as happened a few weeks ago, can be a last surge. Investors will be watching to see if it starts a sideways channel across its blue channel like it did from Fall 2016 to Summer 2017 or if it turns and rolls as it did in Fall 2015.
Trade well my friends
Alan