Daily newsletter · Tue 29 Sep 2026
MongoDB lost 18% of its value because Meta wanted its chief executive
Chirantan Desai, who goes by CJ, left MongoDB with immediate effect on Monday to run a new Meta unit selling AI tools to business customers, reporting to Mark Zuckerberg. MongoDB closed at US$334.68, down US$75.76 or 18.46%.
He had been in the job less than a year. Dev Ittycheria, who ran MongoDB from 2014 to 2025, is back as interim president and chief executive. The company's annual investor day was scheduled for the following morning.
MongoDB sells a document database, the plumbing that stores and fetches the data an application runs on. Desai had been the company's main voice on why that plumbing suits AI agents, and that pitch is most of what the share price rests on.
Guggenheim Securities called the move a real shocker, and William Blair said it raised more questions than answers a day before the event meant to set out the plan. Meta, one of our preferred stocks, fell more than 4% itself, on reports that OpenAI is building a rival assistant.
whether a database company's worth sits in its technology or in the person explaining it. Almost a fifth of MongoDB's market value left with one resignation, and the investor day now has to answer for that rather than for the product.
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