... Funds, Shareholder Sentiment, and Use of the Internet, 2011. ” ICI Research Perspective 17, no. 5 (October). Available at www.ici.org /pdf/ per17-05 .pdf. Ownership of Mutual Funds, Shareholder Sentiment, ... Sentiment, and Use of the Internet, 2011 KEY FINDINGS »In 2011, 45.0 percent of U.S. households owned shares of mutual funds or other U.S registered investment companies—including exchange-traded funds, ... percent of mutual fund–owning households and remains essentially at that level (29 percent) in May 2011. Risk tolerance varies with the age of the head of household, and younger households...