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 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 (9 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 (2026-07-28), not the curated Frontier signal.

Key quality signals

Revenue growth (YoY)	35.5%
Gross margin	72.1%
Gross profits / assets	0.39
Rule of 40	50.3
Net margin	14.8%
Cash runway (months)	—
PEG	—
Price / sales	5.6

Quality checklist

✓ Revenue growth — 35.5% (pass ≥ 20%)
✓ Gross profits / assets — 0.39 (pass ≥ 0.33)
✓ Gross margin — 72.1% (pass ≥ 60%)
✓ Cash generation
~ Share dilution — 1%

Fundamentals — snapshot as of 2026-07-28

Stage	Established
Share issuance (YoY)	1% · modest issuance
Moat	—
TAM	—
P/E (trailing)	15.5
EPS (trailing)	$8.59
Burn multiple	—
Gross-margin trend (pts)	0.6
Cash / assets	0.61
Net debt / EBITDA	-4.8
Statements as of	Q1 FY2026 · filed 2026-05-05

Momentum context — a snapshot from 2026-07-28, not current

Price at surface	$132.82 (as of 2026-07-28)
52-week range	$87.89 – $468
% off 52-wk high	-71.6%
RSI (14)	57
Relative volume	1.3×

Risk flags

Hyper-expansion — assets up ~47% in a year; aggressive expanders have historically lagged.

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Data as of 2026-07-28 (end-of-day). How grades are computed →