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MongoDB Stock: Buy or Sell?

Parkev Tatevosian, CFA•Aug 27, 2026

Summary

Parkev states that MongoDB's revenue growth is showing signs of deceleration, dropping from a recent 25% to a projected 19.5% for the full year. While Parkev acknowledges that this growth still significantly outpaces the US economy and that GAAP operating margins have improved from -80% in 2017 to -4.2%, Parkev believes the rate of improvement is slowing. Parkev highlights that MongoDB is a leader in managing unstructured data, which is essential for the rise of agentic AI, yet the current valuation appears stretched.

Parkev provides the following analysis for MongoDB:

Parkev notes that the stock's forward price-to-earnings ratio is 58, which is more than double the S&P 500 average and difficult to justify given the slowing growth.
Parkev calculates a fair value estimate of $265 using a discounted cash flow model, contrasting sharply with the current market price of approximately $423.
Parkev suggests that for investors who bought in during previous dips, now is an appropriate time to trim positions or sell covered calls with a $500 strike price.

Mentioned Stocks

MDB
Sentiment: HOLDAction: RECOMMENDED

Reasoning: Parkev argues that MongoDB should be downgraded to a hold as of August 20, 2026, because the stock price has soared to $423, which is significantly higher than Parkev's fair value estimate of $265. Parkev states that a forward P/E of 58 is too expensive for a company with decelerating growth and negative margins. Parkev suggests that investors who followed the previous buy recommendation at $200 should now consider taking profits or selling covered calls at a $500 price point.

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