Fact Based List:

Number of States in Which the Three Largest Issuers Held at Least 80% Market Share, 2011-2016

  1. 2011 - 40
  2. 2012 - 41
  3. 2013 - 40
  4. 2014 - 40
  5. 2015 - 43
  6. 2016 - 43

Source: GAO
Source URL: https://www.gao.gov/assets/700/697746.pdf
Notes: Overall Large Group Market