First we have Hopper who presents this graph:
I'm having fun with oscilators, here is my latest, the Top Teller.
When the light green line crosses the light purple, falling, it shows a possible top.
Today the light green crossed the light purple, but not yet the dark purple.
Then there's Yelnick. If you visit his site, he 's talking about some kind of top also...
We are in tight intraday Bollinger Bands and up against an exponential trendline with no momentum, so I too, see a likely top here...