TOP TIERMARKET NEWSWIRE
Movers explained · 2026-09-01

Archived explainer. For the current picture see today's MDB page.

Why Is MONGODB INC A (MDB) Stock Moving Today?

By the Top Tier Newswire AI Desk · September 1, 2026 at 5:58 PM ET · reviewed against 24 wire stories

MONGODB INC A (MDB) is drawing unusual attention today. Our newswire has captured 24 stories on MDB across 11 sources in the last 36 hours, with AI sentiment reading mixed (avg 57/100).

Public view, delayed 4h. Every headline, price and sentiment read below — and this write-up itself — reaches Pro subscribers live. Public readers see it once it clears the delay.

MongoDB Inc. (MDB) is moving sharply lower in after-hours trading, down more than 13% as of the latest price of $378.45. The stock fell despite the company reporting better-than-expected second-quarter results, including revenue of $771.8 million and adjusted earnings per share of $1.90. The decline reflects investor concerns over rising infrastructure and AI-related costs, as well as mixed guidance for the future.

What Happened

MongoDB reported fiscal second-quarter results that exceeded revenue and earnings estimates, with revenue growing 30% year-over-year. The company also raised its full-year guidance for adjusted earnings per share. However, the stock slid after hours as investors focused on the company’s ongoing unprofitability, with a trailing twelve-month net margin of -1.1% and an EPS of -0.37. Additionally, MongoDB’s management highlighted increased infrastructure costs tied to AI initiatives, which raised concerns about future margins. The stock opened the day at $448.40, down slightly from the prior close, but then dropped sharply to a low of $367.76 before settling at $378.45, with a trading volume of 2.7 million shares, 1.5 times the 3-month average.

What The Data Shows

The intraday session showed a volatile move, with the stock reaching a high of $487.73 before plunging. The stock’s 52-week range is $215.68 to $473.10, and it has printed one fresh 52-week low on the most recent trading day. Over the last eight sessions, the stock had risen 3.3%, from $420.37 to $434.21. Recent insider transactions show 10 sales totaling $55.9 million in the last 90 days, with no insider purchases. Congressional trades include several sales, including from Donald J. Trump and Gilbert Cisneros.

What To Watch

Investors should monitor MongoDB’s upcoming earnings report for further clarity on its financial trajectory. The company has also raised its FY2027 guidance, which may influence investor sentiment in the coming weeks.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

MDB by the numbers

7 sessions: +0.78%Coverage: 24 stories / 11 sourcesAI sentiment: 57/100 (mixed)Mkt cap: $35.9B52w: $215.68 to $473.10
MDB · Sep 1 session (5-min) · -17.66% vs prior close · updated 8:59 PM ET
$366$412$458prev close $453.37$373.307:00 AM10:13 AM1:27 PM4:41 PM7:55 PM7:00 AM · $448.347:05 AM · $449.987:15 AM · $448.107:20 AM · $448.007:35 AM · $449.987:55 AM · $446.008:05 AM · $444.458:15 AM · $445.008:20 AM · $446.008:25 AM · $444.448:30 AM · $446.888:35 AM · $442.858:40 AM · $443.428:55 AM · $443.009:10 AM · $445.009:15 AM · $444.009:20 AM · $444.949:25 AM · $443.409:30 AM · $444.219:35 AM · $441.709:40 AM · $441.949:45 AM · $440.279:50 AM · $436.339:55 AM · $439.9510:00 AM · $439.9010:05 AM · $441.0110:10 AM · $439.3310:15 AM · $439.3110:20 AM · $438.4910:25 AM · $438.1910:30 AM · $439.7010:35 AM · $440.3810:40 AM · $440.6810:45 AM · $441.0010:50 AM · $438.5410:55 AM · $439.0411:00 AM · $438.0411:05 AM · $437.4811:10 AM · $439.0311:15 AM · $439.0011:20 AM · $439.4911:25 AM · $439.7411:30 AM · $440.9311:35 AM · $440.4411:40 AM · $440.1211:45 AM · $440.5711:50 AM · $439.2411:55 AM · $438.0612:00 PM · $437.3812:05 PM · $436.7712:10 PM · $435.8112:15 PM · $435.7512:20 PM · $433.8212:25 PM · $434.0212:30 PM · $432.7512:35 PM · $431.4612:40 PM · $431.5212:45 PM · $433.0912:50 PM · $432.5912:55 PM · $434.511:00 PM · $434.131:05 PM · $435.741:10 PM · $435.921:15 PM · $436.511:20 PM · $435.791:25 PM · $435.761:30 PM · $437.301:35 PM · $438.001:40 PM · $437.571:45 PM · $437.671:50 PM · $436.611:55 PM · $435.752:00 PM · $436.822:05 PM · $437.512:10 PM · $438.312:15 PM · $438.802:20 PM · $437.062:25 PM · $438.312:30 PM · $437.232:35 PM · $437.352:40 PM · $437.622:45 PM · $438.102:50 PM · $437.272:55 PM · $438.973:00 PM · $438.983:05 PM · $438.783:10 PM · $438.803:15 PM · $437.733:20 PM · $437.583:25 PM · $434.943:30 PM · $435.593:35 PM · $435.213:40 PM · $432.403:45 PM · $431.613:50 PM · $434.893:55 PM · $435.294:00 PM · $436.294:05 PM · $383.004:10 PM · $379.944:15 PM · $379.644:20 PM · $378.004:25 PM · $378.614:30 PM · $386.754:35 PM · $383.994:40 PM · $381.854:45 PM · $383.004:50 PM · $378.004:55 PM · $381.335:00 PM · $380.005:05 PM · $383.245:10 PM · $381.825:15 PM · $377.245:20 PM · $371.325:25 PM · $371.005:30 PM · $371.735:35 PM · $371.505:40 PM · $375.555:45 PM · $378.005:50 PM · $379.905:55 PM · $378.336:00 PM · $379.006:05 PM · $378.426:10 PM · $376.956:15 PM · $375.506:20 PM · $372.986:25 PM · $373.606:30 PM · $373.966:35 PM · $372.936:40 PM · $373.356:45 PM · $373.806:50 PM · $375.016:55 PM · $375.007:00 PM · $374.107:05 PM · $373.197:10 PM · $372.807:15 PM · $373.507:20 PM · $372.507:25 PM · $373.007:30 PM · $373.007:35 PM · $372.517:40 PM · $372.757:45 PM · $373.507:50 PM · $373.067:55 PM · $373.30
AI sentiment, last 36h · averaged over 24 stories · 57/100 bullish
AI sentiment 57/100 (bullish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 8 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishInvestors.com · sentiment 48 · MongoDB Earnings Beat Estimates But Stock FallsInvestors.com · 48MongoDB Earnings Beat Estimates But Stock FallsInvestors.com · sentiment 42 · MongoDB Earnings Beat Estimates But Stock TumblesInvestors.com · 42MongoDB Earnings Beat Estimates But Stock TumblesThe Fly · sentiment 37 · MongoDB down 13% after Q2 reportThe Fly · 37MongoDB down 13% after Q2 reportSeeking Alpha · sentiment 65 · MongoDB delivers another solid quarter, but AI, infrastructure costs weigh on sharesSeeking Alpha · 65MongoDB delivers another solid quarter, but AI, infrastructure costs weigh on sharesBarron's · sentiment 58 · MongoDB Earnings Beat Expectations. The Stock Is Dropping Anyway.Barron's · 58MongoDB Earnings Beat Expectations. The Stock Is Dropping Anyway.CNBC · sentiment 50 · Stocks making the biggest moves after hours: Dell, MongoDB, GitLab and moreCNBC · 50Stocks making the biggest moves after hours: Dell, MongoDB, GitLab and moreInvesting.com Markets · sentiment 42 · Why is MongoDB stock tumbling today?Investing.com Markets · 42Why is MongoDB stock tumbling today?The Fly · sentiment 67 · MongoDB sees Atlas growth in Q3 at about 26%The Fly · 67MongoDB sees Atlas growth in Q3 at about 26%
11d agoThe FlyBULLISH 67Earnings

MongoDB sees Atlas growth in Q3 at about 26%

11d agoInvesting.com MarketsBEARISH 42General

Why is MongoDB stock tumbling today?

Why is MongoDB stock tumbling today?

11d agoCNBCNEUTRAL 50General

Stocks making the biggest moves after hours: Dell, MongoDB, GitLab and more

These are the stocks posting the largest moves in after-hours trading.

11d agoBarron'sBULLISH 58Earnings

MongoDB Earnings Beat Expectations. The Stock Is Dropping Anyway.

11d agoSeeking AlphaBULLISH 65Earnings

MongoDB delivers another solid quarter, but AI, infrastructure costs weigh on shares

MongoDB (MDB) Q2 earnings beat: 30% revenue growth, higher EPS and raised FY guidance.

11d agoThe FlyBEARISH 37Earnings

MongoDB down 13% after Q2 report

11d agoInvestors.comNEUTRAL 48Earnings

MongoDB Earnings Beat Estimates But Stock Falls

MongoDB stock slid late Tuesday, after the database software company reported fiscal second quarter results.

11d agoInvestors.comBEARISH 42Earnings

MongoDB Earnings Beat Estimates But Stock Tumbles

MongoDB stock slid late Tuesday, after the database software company reported fiscal second quarter results.

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More on MDB: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier MDB move explainers: 2026-09-10 · 2026-09-03 · 2026-09-02 · 2026-09-01 · 2026-08-31 · 2026-08-24