MongoDB raised its growth targets on an engine it does not own
Two days after Meta took its CEO and knocked 17% off the stock, MongoDB lifted three-year targets at its Investor Day. The modernization leg of those numbers runs on Devin, an AI agent built by a $48 billion startup, and neither company will say what the engine costs.
Vincent Jiang · 3 min read
Back in the chair, two days after the fall
Dev Ittycheria, MongoDB's chief executive before Desai, is back as interim president and CEO after Chirantan "CJ" Desai resigned last Friday to lead Meta's new enterprise-AI platform 13. Desai had held the job about eleven months 2. MongoDB shares closed 17% lower Monday, after falling as much as 27% intraday 2. Two days later came the answer: total revenue growth above 20%, up from a high-teens goal, Atlas growth in the mid-20% range, 80% to 100% free-cash-flow conversion over three years, and a fresh $1 billion of buyback 38. The shareholders who ate that drawdown now carry the delivery risk on the new numbers too.
The engine is Devin, and it is Cognition's
The modernization leg of that plan now runs through Cognition. On 29 September the two launched Devin for MongoDB Modernizations, wiring the autonomous coding agent into MongoDB's Application Modernization Platform; in early joint testing, a five-to-six-hour workstream took just over an hour 4. MongoDB counts roughly 70,000 customers, about 75% of the Fortune 100 among them 4, and the deal hands Cognition a route into that base without a salesforce of its own.
Cognition closed more than $2 billion at a $48 billion valuation on 8 September 5, and says its run rate climbed from $492 million in May to almost $900 million 5, a pace since reported at $1 billion per a person familiar 6. Investors are paying roughly 53 times run rate, on two outlets' arithmetic from the company's own figures 67. What MongoDB pays for the engine, neither company says 4.
Cognition's run rate went from $37 million to nearly $900 million in 15 months
Data
| Value | |
|---|---|
| May 2025 | $37M |
| May 2026 | $492M |
| September 2026 | $900M |
The growth had already turned
MongoDB did not need Devin to re-accelerate. Revenue growth bottomed at 12.8% in the quarter ended July 2024 and hit 30.5% in the quarter ended 31 July 2026 9. The AI cohort is small but fast: AI-native and frontier-lab customers are 3% to 5% of Atlas revenue, growing 165% a year, up from 129% a year earlier, and about 40% of Atlas annual recurring revenue now sits with customers running at least one AI use case 38.
MongoDB growth re-accelerated to 30% just as it raised the bar
Data
| Revenue, year-over-year growth | |
|---|---|
| Q3 '23 | 29.8% |
| Q4 '23 | 26.8% |
| Q1 '24 | 22.3% |
| Q2 '24 | 12.8% |
| Q3 '24 | 22.3% |
| Q4 '24 | 19.7% |
| Q1 '25 | 21.9% |
| Q2 '25 | 23.7% |
| Q3 '25 | 18.7% |
| Q4 '25 | 26.7% |
| Q1 '26 | 25.2% |
| Q2 '26 | 30.5% |
The bull case, and the hole in it
Bank of America kept its Buy and called the investor day a net positive, while flagging execution risk during the transition and the chance AI pilots never become production workloads 8. Fair: Ittycheria argues that model advances have made migrations viable that were not before 3. Unresolved: Zuckerberg calls enterprise "the next major pillar" of Meta 2, which is now selling an AI stack to the same buyers, fronted by the man who ran MongoDB's roadmap until Friday 12.
Watch the invoice, not the launch
Three readings decide it: the permanent CEO the board picks 3, whether Devin-led migrations surface as Atlas consumption in the December quarter, and whether Cognition's forecast of more than $1.5 billion in run rate by year end turns out to be receipts rather than a pitch 6. MongoDB is renting its growth engine; the invoice is the part nobody printed.
Deepdive
AI-generated from this story and its cited sources. Not investment advice.
