Planet Fitness (PLNT) tumbled more than 5% on Tuesday on a slew of Wall Street downgrades. JPMorgan and Jefferies both cut their rating for the gym franchise following long-time CEO Chris Rondeau's abrupt departure from the company. If you like this story, sign up for Jim Cramer's Top 10 Morning Thoughts on the Market email newsletter for free. CNBC's Jim Cramer agrees with analysts, adding that the market's reaction is telling of how vital the veteran executive was to the workout chain. "He was the company for heaven's sake," Cramer said, citing Rondeau's long tenure, where he worked his way up from a front desk position nearly 30 years ago at the gym's first location.

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Persons: Chris Rondeau's, Jim Cramer's, Jefferies, CNBC's Jim Cramer, Cramer, Rondeau's Organizations: JPMorgan, Jefferies, Fitness