KVYO · Klaviyo, Inc. · Stock research

Current Thesis

The August 5 binary resolved in the company's favour on the numbers and against it on the tape. Q2 2026 revenue printed $370.576M (+26% YoY) against a $362.110M consensus, adjusted EPS $0.19 in line, and FY26 guidance was raised a second time — from $1.514–1.522B to $1.526–1.534B, above the $1.520B estimate. Shares fell 13.3% the next session to $16.73 (2026-08-06), recovered to $19.22 by 2026-08-13, and closed $18.49 on 2026-08-14, still 48.5% under the $35.92 52-week high. The leg an investor would be buying here is no longer the 30%-growth compounder: it is an AI-agent CRM expansion story — Composer, Customer Agent, and the Agency AI acquisition announced 2026-08-05 — funded by $236M of trailing free cash flow and roughly $240M of Q2 buyback, at a price four months of selling has halved. What sits against it: Q3 guidance of $377–381M implies 21.5–22.5% growth after 26% in Q2 2026 and 28% in Q1 2026, and the Q3 non-GAAP operating income guide of $40–43M runs below the 14% margin Q2 delivered.

Bullish and bearish views on Klaviyo, Inc.

The model's bull view on Klaviyo, Inc. (KVYO), in brief: Beat and second raise, 2026-08-05: Q2 revenue $370.576M vs $362.110M consensus; FY26 guide lifted to $1.526–1.534B (~24% growth) against a $1.520B estimate. The bear view: Deceleration is visible across four quarters: $293M/+32% in Q2 2025, 28% in Q1 2026, 26% in Q2 2026, and a Q3 guide of $377–381M implying 21.5–22.5%. Both cases follow in full.

Bull Case

• Beat and second raise, 2026-08-05: Q2 revenue $370.576M vs $362.110M consensus; FY26 guide lifted to $1.526–1.534B (~24% growth) against a $1.520B estimate. The May pattern — a raise that missed the number — did not repeat.
• Upmarket cohort is the fast part: 4,477 customers above $50K ARR as of Q2 2026, +36% YoY, against 205,000+ total brands, +16% YoY (Q2 2026 slides). Enterprise land-and-expand is carrying the mix.
• Cash generation is real: trailing-twelve-month free cash flow $236M at a 17% margin, up from $155M in Q2 FY25; $833M cash and equivalents; approximately $240M of stock repurchased during Q2 2026.
• AI products have usage numbers, not just slideware: Composer, the marketing agent, reached 95,000+ users in its first month at roughly 25% weekly active; Customer Agent resolution rates of 87% (order tracking), 83% (coupons), 80% (returns), 80% (subscriptions), per the Q2 2026 deck.
• Platform reach extends via M&A: Agency AI announced 2026-08-05 (terms undisclosed), expected to close in Q3 2026, with Elias Torres joining as Chief Product Officer — pushing the product toward CRM rather than campaign tooling.
• The high end of the street stayed: Citigroup raised its target to $36 on 2026-08-07, six sessions after the print and one session after the cluster of cuts.

Bear Case

• Deceleration is visible across four quarters: $293M/+32% in Q2 2025, 28% in Q1 2026, 26% in Q2 2026, and a Q3 guide of $377–381M implying 21.5–22.5%. Nothing in the Q2 disclosure stops that sequence.
• Margin direction reverses in Q3: guided non-GAAP operating income $40–43M (~10.5–11% margin) against 14% delivered in Q2; gross margin 73.4%, down 300bps YoY on SMS carrier fees, with $10–12M of acquisition-related costs and SMS mix pressure flagged through Q4.
• The 2026-08-06 revision cluster skewed down: Benchmark cut to Hold; Stifel $24→$22, Barclays →$22, Piper Sandler →$23, BTIG →$25, TD Cowen →$26, KeyBanc →$29, Canaccord →$29, Truist →$30. Only Macquarie (→$19) and Stephens (→$25) went up that day.
• Supply is being cleared into the bounce: Summit Partners converted 5,000,000 Series B shares into Series A and disposed of all of them at $17.71 on 2026-08-11, reported indirect Series A holding to zero; Rule 144 notices were filed via Goldman Sachs the same day.
• Structure has not been repaired: $18.49 (2026-08-14) is 48.5% below the $35.92 52-week high, and the 2026-05-13 gap-down zone has not been reclaimed. RSI(14) at 53 describes a name with no momentum bid to lean on in either direction.

Setup & Price Structure

• The narrative is dead. The narrative that broke on 2026-05-13 — durable 25–30% growth deserving a premium multiple — has not been replaced by one the tape pays for. The AI-agent leg is one quarter old with product-usage metrics but no revenue attribution.
• The 3-month return of +28.6% is measured from mid-May, immediately after the -32% gap. It describes repair off a crater, not trend.
• Post-print sequence is the working structure: reaction close $16.73 (2026-08-06), $19.22 (2026-08-13), $18.49 (2026-08-14). The 2026-08-06 close is the level that defines whether the recovery holds.
• Positioning and crowding observables: 14 target revisions landed in one session (2026-08-06) on a name with 22 covering analysts — coverage is dense and the marginal action was downward; the largest pre-IPO holder cleared 5M shares at $17.71 into the recovery; the CFO seat was vacant through the print and fills 2026-09-01; no earnings date falls inside the next 30 days. Market cap $5.26B on 284.73M shares (stockanalysis.com, 2026-08-16).

Catalyst Calendar (next 30 days)

• 2026-09-01 — Erica Smith effective as CFO. The Q3 report is the first guidance the new CFO owns.
• ~2026-09-30 (est.) — Agency AI acquisition expected to close in Q3 2026; Elias Torres to become Chief Product Officer.

Elapsed catalysts

• 2026-08-21 — Amanda Whalen's last day as CFO (announced 2026-07-13). (passed 5d ago)
• Beyond the window: Q3 2026 results were not scheduled as of 2026-08-16. The marked number will be Q3 revenue against the guided $377–381M and the $378.396M estimate, plus whatever Q4 guide accompanies it. (passed 10d ago)

What Would Change Our Mind

The whole recent tape rests on one thing: the post-print recovery from the 2026-08-06 reaction close. Losing it puts the name back in the downtrend that has governed since 2026-05-13 and makes the Q2 beat-and-raise a non-event in price terms. A weekly close below $16.73 is that break. The deceleration side closes the case separately: a Q4 revenue guide at the Q3 report implying sub-20% growth, or dollar-based net revenue retention printing under the 109% reported for Q2 2026, would confirm the step-down is structural rather than the profile-enforcement lapping management attributed it to.

Moving the label off dead requires the opposite evidence, and it is specific: a weekly close above the $22–$23 zone where the bulk of the 2026-08-06 cuts landed (Stifel $22, Barclays $22, Piper Sandler $23), plus a quarter in which growth stops stepping down. Failure of the Agency AI transaction to close during Q3 2026, or further large blocks printing at or below the $17.71 Summit clearing level, would argue the supply overhang is not finished.

Correlation Notes

• Trades with high-growth application software rather than AI infrastructure; the 2026-08-12 session ("Nasdaq 100 Rises on Strong AI Earnings, Benign Inflation") is the kind of tape that lifts the group without any company-specific input.
• Revenue is levered to e-commerce GMV through the merchant base; a deceleration in Shopify-ecosystem merchant volume reads through to Klaviyo billings with a lag.
• Gross margin moves inversely with text-message mix: SMS carrier fees drove the 300bps YoY decline to 73.4% in Q2 2026, so faster SMS and WhatsApp growth compresses the blended line even as revenue accelerates.
• Long-duration growth behaviour on macro days: the 2026-07-22 session (Nasdaq 100 lower as crude rallied to $88) is the pattern that moves the name independent of anything the company discloses.