"...10 largest PTs still control < 25% of $30 billion, 19,000-clinic outpatient physical therapy marketplace in the U.S..." https://www.chicagobusiness.com/health-care/are-these-big-physical-therapy-chains-ripe-ipos?utm_source=morning-10&utm_medium=email&utm_campaign=20190111&utm_content=article10-readmore