![CNBC on Twitter: "Jack Bogle, who preached buy and hold investing, and was considered one of the world's greatest investors, has died. He was 89. https://t.co/GOImd8wW1V" / Twitter CNBC on Twitter: "Jack Bogle, who preached buy and hold investing, and was considered one of the world's greatest investors, has died. He was 89. https://t.co/GOImd8wW1V" / Twitter](https://pbs.twimg.com/media/DxE6FsuX4AABWVD.jpg)
CNBC on Twitter: "Jack Bogle, who preached buy and hold investing, and was considered one of the world's greatest investors, has died. He was 89. https://t.co/GOImd8wW1V" / Twitter
![John C. Bogle, Vanguard founder, father of index investing, dies at 89 - Philadelphia Business Journal John C. Bogle, Vanguard founder, father of index investing, dies at 89 - Philadelphia Business Journal](https://media.bizj.us/view/img/2346651/bogleportrait001*1200xx3000-1689-0-0.jpg)
John C. Bogle, Vanguard founder, father of index investing, dies at 89 - Philadelphia Business Journal
![Jack Bogle '51, founder of Vanguard and hero of ordinary investors dies at 89 | The Julis-Rabinowitz Center for Public Policy and Finance Jack Bogle '51, founder of Vanguard and hero of ordinary investors dies at 89 | The Julis-Rabinowitz Center for Public Policy and Finance](https://jrc.princeton.edu/sites/jrc/files/news/jack_bogle_1929-2019_0.jpg)