National Association of Investors Corporation (NAIC), also known as BetterInvesting, is Michigan based 501c3 non-profit organization (since the mid 1998, where prior it was a for-profit organization) whose aim is to teach individuals how to become successful long-term investors. The NAIC is an umbrella organization with around 16,000 member investment clubs, and approximately 120,000 individual members.http://www.betterinvesting.org/about/overview.html NAIC websiteMembership has been in a steady decline since a peak of well over 400,000 in 1999.http://www.betterinvesting.org/ For information on membership decline, visit the Better Investing website and compare the year to year membership reported in press releases.