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Side-by-side financial comparison of American Electric Power (AEP) and Vertex Pharmaceuticals (VRTX). Click either name above to swap in a different company.

American Electric Power is the larger business by last-quarter revenue ($5.1B vs $3.2B, roughly 1.6× Vertex Pharmaceuticals). Vertex Pharmaceuticals runs the higher net margin — 37.3% vs 12.0%, a 25.4% gap on every dollar of revenue. On growth, Vertex Pharmaceuticals posted the faster year-over-year revenue change (9.5% vs 6.2%). Over the past eight quarters, Vertex Pharmaceuticals's revenue compounded faster (8.9% CAGR vs -0.3%).

American Electric Power Company, Inc., an electric public utility holding company, engages in the generation, transmission, and distribution of electricity for sale to retail and wholesale customers in the United States. It operates through Vertically Integrated Utilities, Transmission and Distribution Utilities, AEP Transmission Holdco, and Generation & Marketing segments. The company generates electricity using coal and lignite, natural gas, nuclear, hydro, solar, wind, and other energy sou...

Vertex Pharmaceuticals Incorporated is an American biopharmaceutical company based in Boston, Massachusetts. It was one of the first biotech firms to use an explicit strategy of rational drug design rather than combinatorial chemistry. It maintains headquarters in Boston, Massachusetts, and three research facilities, in San Diego, California, and Milton Park, Oxfordshire, England.

AEP vs VRTX — Head-to-Head

Bigger by revenue
AEP
AEP
1.6× larger
AEP
$5.1B
$3.2B
VRTX
Growing faster (revenue YoY)
VRTX
VRTX
+3.3% gap
VRTX
9.5%
6.2%
AEP
Higher net margin
VRTX
VRTX
25.4% more per $
VRTX
37.3%
12.0%
AEP
Faster 2-yr revenue CAGR
VRTX
VRTX
Annualised
VRTX
8.9%
-0.3%
AEP

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AEP
AEP
VRTX
VRTX
Revenue
$5.1B
$3.2B
Net Profit
$605.2M
$1.2B
Gross Margin
85.4%
Operating Margin
22.1%
37.8%
Net Margin
12.0%
37.3%
Revenue YoY
6.2%
9.5%
Net Profit YoY
-9.1%
30.5%
EPS (diluted)
$1.06
$4.64

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
AEP
AEP
VRTX
VRTX
Q4 25
$5.1B
$3.2B
Q3 25
$6.0B
$3.1B
Q2 25
$5.1B
$3.0B
Q1 25
$5.6B
$2.8B
Q4 24
$4.8B
$2.9B
Q3 24
$5.5B
$2.8B
Q2 24
$4.7B
$2.6B
Q1 24
$5.1B
$2.7B
Net Profit
AEP
AEP
VRTX
VRTX
Q4 25
$605.2M
$1.2B
Q3 25
$1.0B
$1.1B
Q2 25
$1.3B
$1.0B
Q1 25
$802.2M
$646.3M
Q4 24
$665.9M
$913.0M
Q3 24
$961.7M
$1.0B
Q2 24
$342.5M
$-3.6B
Q1 24
$1.0B
$1.1B
Gross Margin
AEP
AEP
VRTX
VRTX
Q4 25
85.4%
Q3 25
86.5%
Q2 25
86.3%
Q1 25
86.9%
Q4 24
85.5%
Q3 24
85.8%
Q2 24
85.9%
Q1 24
87.3%
Operating Margin
AEP
AEP
VRTX
VRTX
Q4 25
22.1%
37.8%
Q3 25
25.5%
38.6%
Q2 25
27.7%
38.8%
Q1 25
22.8%
22.7%
Q4 24
23.0%
35.2%
Q3 24
24.7%
40.3%
Q2 24
14.7%
-132.9%
Q1 24
23.1%
42.4%
Net Margin
AEP
AEP
VRTX
VRTX
Q4 25
12.0%
37.3%
Q3 25
16.8%
35.2%
Q2 25
25.5%
34.8%
Q1 25
14.2%
23.3%
Q4 24
14.0%
31.4%
Q3 24
17.6%
37.7%
Q2 24
7.4%
-135.8%
Q1 24
19.8%
40.9%
EPS (diluted)
AEP
AEP
VRTX
VRTX
Q4 25
$1.06
$4.64
Q3 25
$1.81
$4.20
Q2 25
$2.29
$3.99
Q1 25
$1.50
$2.49
Q4 24
$1.24
$3.62
Q3 24
$1.80
$4.01
Q2 24
$0.64
$-13.92
Q1 24
$1.90
$4.21

Balance Sheet & Financial Strength

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

Metric
AEP
AEP
VRTX
VRTX
Cash + ST InvestmentsLiquidity on hand
$417.0M
$6.6B
Total DebtLower is stronger
$47.3B
Stockholders' EquityBook value
$31.1B
$18.7B
Total Assets
$114.5B
$25.6B
Debt / EquityLower = less leverage
1.52×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AEP
AEP
VRTX
VRTX
Q4 25
$417.0M
$6.6B
Q3 25
$1.3B
$6.3B
Q2 25
$439.3M
$6.4B
Q1 25
$463.6M
$6.2B
Q4 24
$418.3M
$6.1B
Q3 24
$474.4M
$6.5B
Q2 24
$428.2M
$5.8B
Q1 24
$447.7M
$10.2B
Total Debt
AEP
AEP
VRTX
VRTX
Q4 25
$47.3B
Q3 25
$46.1B
Q2 25
$44.5B
Q1 25
$43.0B
Q4 24
$42.6B
Q3 24
$42.0B
Q2 24
$42.1B
Q1 24
$39.8B
Stockholders' Equity
AEP
AEP
VRTX
VRTX
Q4 25
$31.1B
$18.7B
Q3 25
$30.4B
$17.3B
Q2 25
$29.9B
$17.2B
Q1 25
$27.3B
$16.5B
Q4 24
$26.9B
$16.4B
Q3 24
$26.6B
$15.6B
Q2 24
$26.1B
$14.8B
Q1 24
$25.8B
$18.5B
Total Assets
AEP
AEP
VRTX
VRTX
Q4 25
$114.5B
$25.6B
Q3 25
$110.3B
$24.9B
Q2 25
$107.8B
$24.0B
Q1 25
$104.4B
$22.9B
Q4 24
$103.1B
$22.5B
Q3 24
$100.1B
$22.2B
Q2 24
$99.6B
$20.1B
Q1 24
$97.7B
$23.9B
Debt / Equity
AEP
AEP
VRTX
VRTX
Q4 25
1.52×
Q3 25
1.52×
Q2 25
1.49×
Q1 25
1.57×
Q4 24
1.58×
Q3 24
1.58×
Q2 24
1.61×
Q1 24
1.54×

Cash Flow & Capital Efficiency

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

Metric
AEP
AEP
VRTX
VRTX
Operating Cash FlowLast quarter
$1.8B
$498.0M
Free Cash FlowOCF − Capex
$348.6M
FCF MarginFCF / Revenue
10.9%
Capex IntensityCapex / Revenue
4.7%
Cash ConversionOCF / Net Profit
3.00×
0.42×
TTM Free Cash FlowTrailing 4 quarters
$3.2B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AEP
AEP
VRTX
VRTX
Q4 25
$1.8B
$498.0M
Q3 25
$2.5B
$1.2B
Q2 25
$1.2B
$1.1B
Q1 25
$1.4B
$818.9M
Q4 24
$1.7B
$584.6M
Q3 24
$2.2B
$1.4B
Q2 24
$1.5B
$-3.8B
Q1 24
$1.4B
$1.3B
Free Cash Flow
AEP
AEP
VRTX
VRTX
Q4 25
$348.6M
Q3 25
$2.2B
$1.1B
Q2 25
$927.4M
Q1 25
$778.2M
Q4 24
$492.0M
Q3 24
$1.3B
Q2 24
$-3.8B
Q1 24
$1.2B
FCF Margin
AEP
AEP
VRTX
VRTX
Q4 25
10.9%
Q3 25
36.3%
37.0%
Q2 25
31.3%
Q1 25
28.1%
Q4 24
16.9%
Q3 24
47.0%
Q2 24
-144.5%
Q1 24
46.0%
Capex Intensity
AEP
AEP
VRTX
VRTX
Q4 25
4.7%
Q3 25
5.0%
3.3%
Q2 25
4.9%
Q1 25
1.5%
Q4 24
3.2%
Q3 24
0.0%
2.4%
Q2 24
2.6%
Q1 24
2.5%
Cash Conversion
AEP
AEP
VRTX
VRTX
Q4 25
3.00×
0.42×
Q3 25
2.46×
1.15×
Q2 25
0.95×
1.04×
Q1 25
1.81×
1.27×
Q4 24
2.59×
0.64×
Q3 24
2.26×
1.31×
Q2 24
4.27×
Q1 24
1.43×
1.19×

Financial Flow Comparison

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

Revenue Breakdown by Segment

AEP
AEP

Transmissionand Distribution Utilities Revenues$1.5B29%
Electric Generation Transmission Distribution Revenues$956.6M19%
Electricity Transmission And Distribution Revenues$931.8M18%
Industrial$685.8M14%
Marketing Competitive Retailand Renewable$438.3M9%
Wholesale Generation$231.1M5%
Wholesale Transmission$113.6M2%
Other$110.2M2%
Electric Transmission$103.4M2%
Other Retail$60.1M1%

VRTX
VRTX

TRIKAFTAKAFTRIO$2.6B81%
ALYFTREK$380.1M12%
Manufactured Product Other$237.4M7%

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