CTHR fundamentally is in a rough spot... they are basically a gemstone company (very similar to diamond, but it is called mossianite) that gets silicon carbide for its gems supplied by its "sister" company CREE. CTHR got pounded during earnings and honestly I don't see the company going anywhere anytime soon. I have owned CREE stock for about 10 years now, thus my familiarity with CTHR.
IMHO, any signal for CTHR needs to be evaluated carefully... if you jump in too soon, you may catch a head fake (some temporary short covering?) only to watch volume dry up again and price drift sideways/downward.
JMHO, happy trading