D’oh!

  • Nearly 21 percent of oil and natural gas shares are in mutual funds, held by 52.3 million American households with a median annual income of $80,000 in 2011.

  • Nearly 18 percent of industry shares are held through IRAs, with 48.6 million households owning one or more IRAs. Of those IRA holders, 80 percent had annual incomes of $70,000 or less in 2010.

  • More than 31 percent of industry shares are owned by public or private pension plans, including 401(k)s (not including IRAs). The funds manage assets for more than 60 million households, with an average account value of less than $55,000. You can learn more about oil and natural gas earnings and pensions here.