DDOG · Datadog

The thesis

Datadog's third-quarter revenue beat guidance and its full-year forecast rose, but a fourth-quarter outlook that holds revenue flat pushed the shares to $178.40 on 10 November 2026. The 4 November 2026 report cut the case's price level and shifted what settles it: the fourth-quarter report in about February 2027 must show growth outside the largest customer holding in the low-to-mid 30% range. Analysts are still cutting estimates and the largest customer's usage is guided to its contractual minimum.

The shares closed at $278.41 on 28 October 2026 and at $178.40 on 10 November 2026, so that level has been breached. The revenue condition, third-quarter revenue below $1.135 billion, did not fire: revenue was $1.197 billion, up 35% from $885.7 million, per Datadog's 4 November 2026 release.

The story is well known: the story is well known, and the target-raise run of 19 October to 27 October 2026 ended when the 4 November 2026 guidance reset expectations. Press reports put the report-day drop between 14% (24/7 Wall St.) and 19% (MarketBeat).

Bullish and bearish views on Datadog, Inc.

The bull case on Datadog, Inc. (DDOG), in brief: third quarter beat and the full-year forecast rose. The bear case: the fourth-quarter guide is flat.

Bull case

• Third quarter beat and the full-year forecast rose. Revenue of $1.197 billion cleared the $1.135–1.145 billion guidance range, and non-GAAP (adjusted) earnings per share were $0.81, per the 4 November 2026 release. Full-year revenue guidance rose to $4.515–4.525 billion from $4.45–4.47 billion.
• Growth outside AI customers keeps speeding up. Revenue growth excluding the AI cohort accelerated for a fifth straight quarter to the high-20% range year over year, per the 4 November 2026 earnings call as summarised by MarketBeat.
• Underlying growth is faster than the headline guide. Management said fourth-quarter growth excluding the largest customer is implied in the low-to-mid 30% range, per MarketBeat's call summary. The 25–26% headline growth guide holds that customer at its minimum commitment.
• AI customer base is broadening. Datadog had about 850 AI customers, up from about 750 the prior quarter, and 39 of them spend over $1 million a year, per the call summary. Customers with annual recurring revenue above $100,000 rose 20% to about 4,860.
• Cash generation is strong. Third-quarter free cash flow was $250.6 million, a 21% margin, and non-GAAP operating income was $334.3 million, a 28% margin, per the 4 November 2026 release.
• Targets sit far above the price. After the cuts, the lowest published targets are $240 (Macquarie, Wedbush, StoneX); Citigroup's is $290 and Wells Fargo's is $300, all dated 5 November 2026.

Bear case

• The fourth-quarter guide is flat. Datadog guided fourth-quarter revenue to $1.19–1.20 billion, 25–26% growth against 35% in the third quarter. A 5 November 2026 news headline said the guide implies the first sequential growth decline since 2019.
• The largest customer is guided to its floor. That customer's usage fell in the third quarter but stayed above its minimum commitment, and the fourth-quarter outlook assumes revenue at the minimum, per the call summary. The company has not named the customer.
• Early renewals bring near-term price concessions. Several large AI customers renewed early at larger commitments and better volume pricing, which management said creates short-term revenue headwinds, per the call summary.
• Analysts reset estimates. At least 14 firms lowered targets on 5 November 2026 and 6 November 2026: Bernstein to $273 from $350, Wells Fargo to $300 from $325, Rothschild & Co Redburn to $275 from $300, and Macquarie to $240. Morgan Stanley kept $270.
• Reported profit is thin. Third-quarter operating income under generally accepted accounting principles (GAAP) was $74.7 million against $334.3 million on the non-GAAP measure, per the 4 November 2026 release.
• Net retention is not accelerating. Trailing 12-month net revenue retention was in the low-120% range, similar to the prior quarter, per the call summary.

Price setup

The adjusted close on 10 November 2026 was $178.40. That is 39.2% below the 52-week high of $293.26 and 29.3% lower than three months earlier. The 14-day relative strength index (RSI), a momentum gauge where readings under 30 are usually called oversold, was 20.4.

The shares fell about $100 from the 28 October 2026 close of $278.41. The prior $240 kill line broke on the report-day decline. Schaeffer's Research put the stock up 93.5% for the year as of 19 October 2026, so the 2026 gain has been largely reversed.

Crowding evidence has changed. The run-up into the report and the cluster of target raises from 19 October to 27 October 2026 were the visible crowding; the post-report reset removed most of it. A 5 November 2026 headline from Benzinga-syndicated coverage asked whether this is the bottom; no filing or price action in this note confirms one. SEC Form 4 insider sales and share issuance are not part of the evidence here.

Catalysts ahead

• ~February 2027 (est.): Fourth-quarter 2026 results. Tests the $1.19–1.20 billion revenue guide, the full-year range and growth excluding the largest customer.

What would change the view

A daily close above $212.04, 15% above the last close (11 November 2026), would show the shares leading the S&P 500 and prove this call wrong.

What it trades with

Datadog trades with high-growth software and AI-usage names. Its largest customer is AI-native, so its revenue also responds to AI-lab compute and tooling decisions. Software peers reporting in the coming weeks can move the shares on read-across. No correlation figures were measured for this note.