On July 16, 2013, CMS announced results from the first performance year of the Pioneer Accountable Care Organization (ACO) Model. In the release, CMS reported that the Pioneer ACO participants held Medicare cost increases below those for the general Medicare population, netting more than $33 million of savings to the Medicare Trust Fund for 2012. At the same time, it was mentioned that nine of the 32 Pioneer ACOs will not continue in the second performance year.