A research filter, not a predictor — not financial advice. Grades rank growth stocks on evidence-based quality signals from end-of-day data; they are not buy/sell calls or price forecasts. Always do your own research.
Duolingo, Inc. DUOL
Strong (graded 2026-09-05, not re-checked) broader-coverage candidate · Duolingo, Inc. builds and operates an online platform and a mobile application dedicated to language learning, catering to audiences in both the United States and China. The compan
On FrontierLab's discovery record since 2026-06-17 (15 weeks ago) — when this name first surfaced. (distinct from the snapshot date below)
Auto-graded broader coverage — sourced by an automated screen and graded on default bands, not the sector-calibrated bands the curated screener uses. A "Strong" here is NOT the same bar as a curated grade; these are auto-screened candidates for your own research, shown as of their surface date (2026-09-05), not the curated Frontier signal.
Key quality signals
| Revenue growth (YoY) | 29.4% |
|---|---|
| Gross margin | 72.3% |
| Gross profits / assets | 0.4 |
| Rule of 40 | 43.6 |
| Net margin | 14.2% |
| Cash runway (months) | — |
| PEG | 0.1 |
| Price / sales | 6.3 |
Quality checklist
- ✓ Revenue growth — 29.4% (pass ≥ 20%)
- ✓ Gross profits / assets — 0.4 (pass ≥ 0.33)
- ✓ Gross margin — 72.3% (pass ≥ 60%)
- ✓ Cash generation
- ~ Share dilution — 2.1%
Fundamentals — snapshot as of 2026-09-05
| Stage | Established |
|---|---|
| Share issuance (YoY) | 2.1% · modest issuance |
| Moat | — |
| TAM | — |
| P/E (trailing) | 18.5 |
| EPS (trailing) | $8.34 |
| Burn multiple | — |
| Gross-margin trend (pts) | 0.9 |
| Cash / assets | 0.63 |
| Net debt / EBITDA | -5.3 |
| Statements as of | Q2 FY2026 · filed 2026-08-06 |
Momentum context — a snapshot from 2026-09-05, not current
| Price at surface | $154.46 (as of 2026-09-05) |
|---|---|
| 52-week range | $87.89 – $353 |
| % off 52-wk high | -56.2% |
| RSI (14) | 61 |
| Relative volume | 0.9× |
Risk flags
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Data as of 2026-09-05 (end-of-day). How grades are computed →