You know what grew at almost the same rate (up ~24%) as the DJIA in 2017? The number of ACOs operating in the US. For the uninitiated, “Accountable Care Organizations (ACOs) are groups of health care providers, who come together to give coordinated care to Medicare patients. When an ACO succeeds in delivering high-quality care and spending health care dollars more wisely, it shares the savings it achieves for the Medicare program.” There will be 18% more ACOs in 2018, than in 2017. There are 5 different ACO models and according to a report by IQVIA (form required), there are “1,000 federal, commercial and Medicaid ACOs, representing an estimated 28M beneficiaries.” The report lists the top 30 ACOs as well as the top ACOs in each of the 5 models. Not sure, but ~9% of the US population starts to raise an eyebrow or one.