Vivos Inc (RDGL)

[kayak_wench]

Apples and oranges (or maybe more like apples and watermelons where CATX is the watermelon). CATX may have bought IsoRay, but it looks like they are far more than IsoRay. Why they wanted IsoRay is a mystery....but it isn't responsible for the market cap.
https://finance.yahoo.com/news/perspective-therapeutics-selected-fda-participate-110000414.html

Perspective Therapeutics, Inc., is a radiopharmaceutical development company that is pioneering advanced treatment applications for cancers throughout the body. The Company has proprietary technology that utilizes the alpha emitting isotope 212Pb to deliver powerful radiation specifically to cancer cells via specialized targeting peptides. The Company is also developing complementary imaging diagnostics that incorporate the same targeting peptides, which provide the opportunity to personalize treatment and optimize patient outcomes. This "theranostic" approach enables the ability to see the specific tumor and then treat it to potentially improve efficacy and minimize toxicity.