In 2018, one-third of accountable care organizations (ACOs) had at least one contract with downside risk of loss if they failed to meet savings targets. In 2012, 28% of ACOs had contracts with two-sided risk. The ACOs taking on downside risk were less likely to be physician-led, and were more likely to have previous experience with risk-bearing contracts in the past. These findings were reported in “ACO Contracts With Downside Financial Risk Growing, But Still In The Minority” by Kristen A. Peck, Benjamin Usadi, Alexander J. Mainor, Elliott S. Fisher, and Carrie H. Colla. The researchers . . .