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Why MongoDB Sank Today

The Motley Fool | Sep 28, 2026 4:00 PM EDT

Shares of new-age database company MongoDB (NASDAQ: MDB) sank as much as 26.9% on Monday, before recovering to a 18.5% decline on the day. Today, MongoDB's CEO, Chirantan "CJ" Desai, announced that he has left MongoDB to head the new Meta Enterprise Platform, which Meta Platforms (NASDAQ: META) also announced today. It's pretty shocking to see a CEO who was just one year into his tenure leave for a large Magnificent Seven company where he won't be the CEO. Therefore, it's no surprise to see MongoDB falling in the news. But is the sell-off overdone? Continue reading

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