Investing in Index Funds. Vanguard’s John Bogle February 13, 2018 admin Investor Education, Long Term Investing Comments Off on Investing in Index Funds. Vanguard’s John Bogle Why Invest in Index Funds? Vanguard’s John Bogle Explains Discover Tomorrow’s Winning Stocks! Thank you for subscribing. Something went wrong. Get our latest stock reports before everyone else! Actionable news, and breakout stocks w multi-bagger upside potential — delivered directly to your inbox. Your privacy is our priority. Your email address will never be sold or shared with anyone else.