Does EXAS/Cologuard have any other US competitors currently or on the horizon?
None (other than MYNZ) that are stool-based tests. There are several companies developing blood tests (a/k/a liquid biopsies) for CRC, but I doubt that these can be as precise as a stool-based test.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”