Jack Bogle, founder of Vanguard Group and inventor of the index fund, passed away late Wednesday, January 16.

John Bogle will be missed. What a great man. He gave everyone a chance to invest in a terrific instrument that remains the best way to capitalize off the stock market's success RIP

— Jim Cramer (@jimcramer) January 16, 2019

"Jack was the ultimate titan," said TheStreet's Jim Cramer. "He democratized investing and gave everyone a chance at investing in the progress of America. We are all indebted to him for his selfless championing of a low-cost way for people to save and he will be missed. What a gent he was," Cramer added.

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