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Side-by-side financial comparison of Alpha Metallurgical Resources, Inc. (AMR) and Duolingo, Inc. (DUOL). Click either name above to swap in a different company.

Alpha Metallurgical Resources, Inc. is the larger business by last-quarter revenue ($519.1M vs $282.9M, roughly 1.8× Duolingo, Inc.). Duolingo, Inc. runs the higher net margin — 14.8% vs -3.3%, a 18.2% gap on every dollar of revenue. On growth, Duolingo, Inc. posted the faster year-over-year revenue change (35.0% vs -15.7%). Duolingo, Inc. produced more free cash flow last quarter ($96.6M vs $-10.0M). Over the past eight quarters, Duolingo, Inc.'s revenue compounded faster (29.9% CAGR vs -22.4%).

Alpha Metallurgical Resources, formerly Contura Energy, is a leading coal supplier with underground and surface coal mining complexes across Northern and Central Appalachia. Contura owns large coal basins in Pennsylvania, Virginia and West Virginia which supply both metallurgical coal to produce steel and thermal coal to generate power.

Duolingo, Inc. is a leading global edtech firm operating a gamified language learning platform. It offers free and premium self-paced courses for over 40 languages, plus language certification, math learning tools, and literacy programs, serving individual learners, schools and corporate clients worldwide.

AMR vs DUOL — Head-to-Head

Bigger by revenue
AMR
AMR
1.8× larger
AMR
$519.1M
$282.9M
DUOL
Growing faster (revenue YoY)
DUOL
DUOL
+50.6% gap
DUOL
35.0%
-15.7%
AMR
Higher net margin
DUOL
DUOL
18.2% more per $
DUOL
14.8%
-3.3%
AMR
More free cash flow
DUOL
DUOL
$106.5M more FCF
DUOL
$96.6M
$-10.0M
AMR
Faster 2-yr revenue CAGR
DUOL
DUOL
Annualised
DUOL
29.9%
-22.4%
AMR

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AMR
AMR
DUOL
DUOL
Revenue
$519.1M
$282.9M
Net Profit
$-17.3M
$42.0M
Gross Margin
72.8%
Operating Margin
-4.1%
15.4%
Net Margin
-3.3%
14.8%
Revenue YoY
-15.7%
35.0%
Net Profit YoY
-711.2%
201.7%
EPS (diluted)
$-1.35
$0.99

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
AMR
AMR
DUOL
DUOL
Q4 25
$519.1M
$282.9M
Q3 25
$525.2M
$271.7M
Q2 25
$548.7M
$252.3M
Q1 25
$529.7M
$230.7M
Q4 24
$615.4M
$209.6M
Q3 24
$669.8M
$192.6M
Q2 24
$800.1M
$178.3M
Q1 24
$861.3M
$167.6M
Net Profit
AMR
AMR
DUOL
DUOL
Q4 25
$-17.3M
$42.0M
Q3 25
$-5.5M
$292.2M
Q2 25
$-5.0M
$44.8M
Q1 25
$-33.9M
$35.1M
Q4 24
$-2.1M
$13.9M
Q3 24
$3.8M
$23.4M
Q2 24
$58.9M
$24.4M
Q1 24
$127.0M
$27.0M
Gross Margin
AMR
AMR
DUOL
DUOL
Q4 25
72.8%
Q3 25
72.5%
Q2 25
72.4%
Q1 25
71.1%
Q4 24
71.9%
Q3 24
72.9%
Q2 24
73.4%
Q1 24
73.0%
Operating Margin
AMR
AMR
DUOL
DUOL
Q4 25
-4.1%
15.4%
Q3 25
-0.5%
12.9%
Q2 25
0.5%
13.2%
Q1 25
-7.6%
10.2%
Q4 24
1.6%
6.6%
Q3 24
0.8%
7.0%
Q2 24
8.8%
10.5%
Q1 24
16.5%
9.8%
Net Margin
AMR
AMR
DUOL
DUOL
Q4 25
-3.3%
14.8%
Q3 25
-1.1%
107.5%
Q2 25
-0.9%
17.8%
Q1 25
-6.4%
15.2%
Q4 24
-0.3%
6.6%
Q3 24
0.6%
12.1%
Q2 24
7.4%
13.7%
Q1 24
14.7%
16.1%
EPS (diluted)
AMR
AMR
DUOL
DUOL
Q4 25
$-1.35
$0.99
Q3 25
$-0.42
$5.95
Q2 25
$-0.38
$0.91
Q1 25
$-2.60
$0.72
Q4 24
$-0.09
$0.31
Q3 24
$0.29
$0.49
Q2 24
$4.49
$0.51
Q1 24
$9.59
$0.57

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
AMR
AMR
DUOL
DUOL
Cash + ST InvestmentsLiquidity on hand
$415.6M
$1.0B
Total DebtLower is stronger
$9.8M
Stockholders' EquityBook value
$1.5B
$1.3B
Total Assets
$2.3B
$2.0B
Debt / EquityLower = less leverage
0.01×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMR
AMR
DUOL
DUOL
Q4 25
$415.6M
$1.0B
Q3 25
$457.9M
$1.0B
Q2 25
$449.0M
$976.2M
Q1 25
$448.0M
$884.0M
Q4 24
$481.6M
$785.8M
Q3 24
$484.6M
$854.4M
Q2 24
$336.1M
$888.2M
Q1 24
$269.4M
$829.7M
Total Debt
AMR
AMR
DUOL
DUOL
Q4 25
$9.8M
Q3 25
$2.9M
Q2 25
$3.1M
Q1 25
$2.4M
Q4 24
$2.9M
Q3 24
$3.6M
Q2 24
$5.3M
Q1 24
$6.0M
Stockholders' Equity
AMR
AMR
DUOL
DUOL
Q4 25
$1.5B
$1.3B
Q3 25
$1.6B
$1.3B
Q2 25
$1.6B
$977.0M
Q1 25
$1.6B
$893.8M
Q4 24
$1.6B
$824.5M
Q3 24
$1.7B
$822.5M
Q2 24
$1.6B
$766.9M
Q1 24
$1.6B
$711.1M
Total Assets
AMR
AMR
DUOL
DUOL
Q4 25
$2.3B
$2.0B
Q3 25
$2.3B
$1.9B
Q2 25
$2.4B
$1.5B
Q1 25
$2.4B
$1.4B
Q4 24
$2.4B
$1.3B
Q3 24
$2.5B
$1.2B
Q2 24
$2.5B
$1.1B
Q1 24
$2.5B
$1.1B
Debt / Equity
AMR
AMR
DUOL
DUOL
Q4 25
0.01×
Q3 25
0.00×
Q2 25
0.00×
Q1 25
0.00×
Q4 24
0.00×
Q3 24
0.00×
Q2 24
0.00×
Q1 24
0.00×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
AMR
AMR
DUOL
DUOL
Operating Cash FlowLast quarter
$19.0M
$107.3M
Free Cash FlowOCF − Capex
$-10.0M
$96.6M
FCF MarginFCF / Revenue
-1.9%
34.1%
Capex IntensityCapex / Revenue
5.6%
3.8%
Cash ConversionOCF / Net Profit
2.56×
TTM Free Cash FlowTrailing 4 quarters
$17.8M
$369.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMR
AMR
DUOL
DUOL
Q4 25
$19.0M
$107.3M
Q3 25
$50.5M
$84.2M
Q2 25
$53.2M
$90.7M
Q1 25
$22.2M
$105.6M
Q4 24
$56.3M
$83.3M
Q3 24
$189.5M
$56.3M
Q2 24
$138.1M
$62.4M
Q1 24
$196.1M
$83.5M
Free Cash Flow
AMR
AMR
DUOL
DUOL
Q4 25
$-10.0M
$96.6M
Q3 25
$25.4M
$79.4M
Q2 25
$18.6M
$89.5M
Q1 25
$-16.3M
$104.3M
Q4 24
$13.6M
$81.4M
Q3 24
$158.0M
$53.1M
Q2 24
$77.0M
$56.8M
Q1 24
$132.5M
$82.1M
FCF Margin
AMR
AMR
DUOL
DUOL
Q4 25
-1.9%
34.1%
Q3 25
4.8%
29.2%
Q2 25
3.4%
35.5%
Q1 25
-3.1%
45.2%
Q4 24
2.2%
38.8%
Q3 24
23.6%
27.6%
Q2 24
9.6%
31.9%
Q1 24
15.4%
49.0%
Capex Intensity
AMR
AMR
DUOL
DUOL
Q4 25
5.6%
3.8%
Q3 25
4.8%
1.8%
Q2 25
6.3%
0.5%
Q1 25
7.3%
0.6%
Q4 24
6.9%
0.9%
Q3 24
4.7%
1.7%
Q2 24
7.6%
3.1%
Q1 24
7.4%
0.8%
Cash Conversion
AMR
AMR
DUOL
DUOL
Q4 25
2.56×
Q3 25
0.29×
Q2 25
2.02×
Q1 25
3.01×
Q4 24
5.99×
Q3 24
49.81×
2.41×
Q2 24
2.34×
2.56×
Q1 24
1.54×
3.10×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

AMR
AMR

Segment breakdown not available.

DUOL
DUOL

License And Service$242.3M86%
Advertising$20.2M7%
English Test$10.3M4%
Other$10.1M4%

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