Let's look at Amazon's chart and see how overbought it really is:
At first glance, it would seem to be all out of control to the upside. If you're going to buy it, you have to wait for a big pull back, right? But if you assume there is a change in climb steepness, related to some fundamental changes in their business, and you construct the trading channel change in slope associated with that, you see that it doesn't look so overbought. It is, in fact, resting on the bottom of the new channel preparing for the next run to the top.
I've also included the Accumulation/Distribution cycling for this channel along with the CMF money flow cycling. These weigh the considered opinion of what I call the "heavy" money - large funds and other very large pools of cash, which tend to do the best research. I find that these have very good predictive power in moving the needle when the cycling correlates well with runs in the stock. As the chart shows, there is very good correlation for Amazon now. Virtually every trip the A/D support trend line corresponds to the beginning of a good run to the upside for the stock, and we are smack on one right now. All this suggests AMZN is actually at a good buy point, even after the run it has had this year - it may just be changing gears.
This isn't the first time this kind of thing has happened. If you look at the following chart, you see a very similar situation:
Here we have the same A/D cycling setting in with the same change in channel. And what happened? Well, we all know what happened. This turned out to be the massive breakout NVDA did in 2015, and it made a bee line to $250 from the way "overbought" $35 price you see at the right end of this chart. Just staring at the above chart in April of 2016, your thought was that you'd have to be crazy reckless to buy it there. But the combined wisdom of the market was telling us that Nvidia's business was changing from gaming to artificial intelligence and a bunch of new, lucrative stuff. I suspect something similar may be going on now with Amazon.