Perspective Therapeutics Inc (CATX)

[BooDog]

That actually happened a week or so ago. Depends on your strategy and your trading style. There are so many different indicators that each trader uses as their trigger to buy or sell. Finding out what works for you is what's important. Then, technicals Vs. fundamentals. Either way, having a plan is essential with stop loss. I'll tell you what, pick any crappy looking chart out there and I bet I can make it look like a buy by using different combinations of indicators and different candle stick patterns.
Might be some links on my board here to different technical trading sites, ie take a look at Japanese Candlesticking.

You brought up the 20dma, I'm thinking you meant to say 50dma. The major DMA's offer good support/resistance targets but keep in mind that you should look for confirmation unless you're using the 50/200dma's as your stop loss (remember your plan).
ISR's sell signal actually came through the end of June imo. Now, providing ISR doesn't tank, it is showing some potential buy signals but need confirmation. Watch the stochastic family, Fast sto, slow sto and full sto (which say watch/accumulate cautiously imo). I combine that with the divergence of the ADX which says wait imo. Then the other support levels come into play, 2.50 was a good level to see hold. stockta.com posts some decent support resistance levels.
A lot of different ways to look at the puzzle, just need to see which angle is right for you.

My own opinion. I'm not a paid promoter or analyst/advisor.