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Side-by-side financial comparison of Biogen (BIIB) and Norfolk Southern (NSC). Click either name above to swap in a different company.

Norfolk Southern is the larger business by last-quarter revenue ($3.0B vs $2.5B, roughly 1.2× Biogen). Norfolk Southern runs the higher net margin — 21.7% vs 12.9%, a 8.8% gap on every dollar of revenue. On growth, Biogen posted the faster year-over-year revenue change (2.0% vs -1.7%). Biogen produced more free cash flow last quarter ($594.3M vs $334.0M). Over the past eight quarters, Biogen's revenue compounded faster (0.3% CAGR vs -0.5%).

Biogen Inc. is an American multinational biotechnology company based in Cambridge, Massachusetts, United States specializing in the treatment of neurological diseases. The company's primary products are dimethyl fumarate (Tecfidera), diroximel fumarate (Vumerity), interferon beta-1a (AVONEX), peginterferon beta-1a (Plegridy), and natalizumab (Tysabri), all for the treatment of multiple sclerosis ; nusinersen (Spinraza) for the treatment of spinal muscular atrophy ; omaveloxolone (Skyclarys) for ...

The Norfolk Southern Railway is a Class I freight railroad operating in the Eastern United States. Headquartered in Atlanta, the company was formed in 1982 with the merger of the Norfolk and Western Railway and Southern Railway. The company operates 19,420 route miles (31,250 km) in 22 eastern states and the District of Columbia, and has rights in Canada over the Albany to Montreal route of the Canadian Pacific Kansas City.

BIIB vs NSC — Head-to-Head

Bigger by revenue
NSC
NSC
1.2× larger
NSC
$3.0B
$2.5B
BIIB
Growing faster (revenue YoY)
BIIB
BIIB
+3.7% gap
BIIB
2.0%
-1.7%
NSC
Higher net margin
NSC
NSC
8.8% more per $
NSC
21.7%
12.9%
BIIB
More free cash flow
BIIB
BIIB
$260.3M more FCF
BIIB
$594.3M
$334.0M
NSC
Faster 2-yr revenue CAGR
BIIB
BIIB
Annualised
BIIB
0.3%
-0.5%
NSC

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
BIIB
BIIB
NSC
NSC
Revenue
$2.5B
$3.0B
Net Profit
$319.5M
$644.0M
Gross Margin
Operating Margin
31.5%
Net Margin
12.9%
21.7%
Revenue YoY
2.0%
-1.7%
Net Profit YoY
32.8%
-12.1%
EPS (diluted)
$2.15
$2.87

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
BIIB
BIIB
NSC
NSC
Q1 26
$2.5B
Q4 25
$2.3B
$3.0B
Q3 25
$2.5B
$3.1B
Q2 25
$2.6B
$3.1B
Q1 25
$2.4B
$3.0B
Q4 24
$2.5B
$3.0B
Q3 24
$2.5B
$3.1B
Q2 24
$2.5B
$3.0B
Net Profit
BIIB
BIIB
NSC
NSC
Q1 26
$319.5M
Q4 25
$-48.9M
$644.0M
Q3 25
$466.5M
$711.0M
Q2 25
$634.8M
$768.0M
Q1 25
$240.5M
$750.0M
Q4 24
$266.7M
$733.0M
Q3 24
$388.5M
$1.1B
Q2 24
$583.6M
$737.0M
Gross Margin
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
78.3%
Q3 25
73.4%
Q2 25
77.1%
Q1 25
74.1%
Q4 24
76.2%
Q3 24
74.1%
Q2 24
77.8%
Operating Margin
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
-2.5%
31.5%
Q3 25
22.0%
35.4%
Q2 25
28.1%
37.8%
Q1 25
12.8%
38.3%
Q4 24
11.9%
37.4%
Q3 24
18.3%
52.3%
Q2 24
28.3%
37.2%
Net Margin
BIIB
BIIB
NSC
NSC
Q1 26
12.9%
Q4 25
-2.1%
21.7%
Q3 25
18.4%
22.9%
Q2 25
24.0%
24.7%
Q1 25
9.9%
25.1%
Q4 24
10.9%
24.2%
Q3 24
15.8%
36.0%
Q2 24
23.7%
24.2%
EPS (diluted)
BIIB
BIIB
NSC
NSC
Q1 26
$2.15
Q4 25
$-0.35
$2.87
Q3 25
$3.17
$3.16
Q2 25
$4.33
$3.41
Q1 25
$1.64
$3.31
Q4 24
$1.82
$3.24
Q3 24
$2.66
$4.85
Q2 24
$4.00
$3.25

Balance Sheet & Financial Strength

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

Metric
BIIB
BIIB
NSC
NSC
Cash + ST InvestmentsLiquidity on hand
$3.4B
$1.5B
Total DebtLower is stronger
$16.5B
Stockholders' EquityBook value
$18.7B
$15.5B
Total Assets
$29.5B
$45.2B
Debt / EquityLower = less leverage
1.06×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BIIB
BIIB
NSC
NSC
Q1 26
$3.4B
Q4 25
$1.5B
Q3 25
$1.4B
Q2 25
$1.3B
Q1 25
$1.0B
Q4 24
$1.6B
Q3 24
$975.0M
Q2 24
$659.0M
Total Debt
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
$6.3B
$16.5B
Q3 25
$6.3B
$16.5B
Q2 25
$6.3B
$16.5B
Q1 25
$4.5B
$16.7B
Q4 24
$6.3B
$16.7B
Q3 24
$4.5B
$16.6B
Q2 24
$6.3B
$16.9B
Stockholders' Equity
BIIB
BIIB
NSC
NSC
Q1 26
$18.7B
Q4 25
$18.3B
$15.5B
Q3 25
$18.2B
$15.1B
Q2 25
$17.6B
$14.8B
Q1 25
$17.0B
$14.5B
Q4 24
$16.7B
$14.3B
Q3 24
$16.4B
$13.8B
Q2 24
$15.9B
$13.0B
Total Assets
BIIB
BIIB
NSC
NSC
Q1 26
$29.5B
Q4 25
$29.4B
$45.2B
Q3 25
$29.2B
$44.6B
Q2 25
$28.3B
$44.2B
Q1 25
$28.0B
$43.8B
Q4 24
$28.0B
$43.7B
Q3 24
$28.3B
$43.3B
Q2 24
$26.8B
$42.6B
Debt / Equity
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
0.34×
1.06×
Q3 25
0.35×
1.09×
Q2 25
0.36×
1.11×
Q1 25
0.27×
1.15×
Q4 24
0.38×
1.16×
Q3 24
0.28×
1.21×
Q2 24
0.40×
1.30×

Cash Flow & Capital Efficiency

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

Metric
BIIB
BIIB
NSC
NSC
Operating Cash FlowLast quarter
$1.1B
Free Cash FlowOCF − Capex
$594.3M
$334.0M
FCF MarginFCF / Revenue
24.0%
11.2%
Capex IntensityCapex / Revenue
24.5%
Cash ConversionOCF / Net Profit
1.65×
TTM Free Cash FlowTrailing 4 quarters
$2.4B
$2.2B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
$511.9M
$1.1B
Q3 25
$1.3B
$1.3B
Q2 25
$160.9M
$1.1B
Q1 25
$259.3M
$950.0M
Q4 24
$760.9M
$951.0M
Q3 24
$935.6M
$1.2B
Q2 24
$625.8M
$1.0B
Free Cash Flow
BIIB
BIIB
NSC
NSC
Q1 26
$594.3M
Q4 25
$468.0M
$334.0M
Q3 25
$1.2B
$720.0M
Q2 25
$134.3M
$602.0M
Q1 25
$222.2M
$501.0M
Q4 24
$721.6M
$276.0M
Q3 24
$900.6M
$645.0M
Q2 24
$592.3M
$468.0M
FCF Margin
BIIB
BIIB
NSC
NSC
Q1 26
24.0%
Q4 25
20.5%
11.2%
Q3 25
48.4%
23.2%
Q2 25
5.1%
19.4%
Q1 25
9.1%
16.7%
Q4 24
29.4%
9.1%
Q3 24
36.5%
21.1%
Q2 24
24.0%
15.4%
Capex Intensity
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
1.9%
24.5%
Q3 25
1.8%
17.8%
Q2 25
1.0%
15.3%
Q1 25
1.5%
15.0%
Q4 24
1.6%
22.3%
Q3 24
1.4%
19.0%
Q2 24
1.4%
18.7%
Cash Conversion
BIIB
BIIB
NSC
NSC
Q1 26
Q4 25
1.65×
Q3 25
2.73×
1.79×
Q2 25
0.25×
1.40×
Q1 25
1.08×
1.27×
Q4 24
2.85×
1.30×
Q3 24
2.41×
1.12×
Q2 24
1.07×
1.41×

Financial Flow Comparison

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

Revenue Breakdown by Segment

BIIB
BIIB

Product revenue, net$1.8B71%
Royalty revenue on sales of OCREVUS$317.2M13%
Contract manufacturing, royalty and other revenue$246.9M10%
Biogen's share of pre-tax profits in the U.S. for RITUXAN, GAZYVA and LUNSUMIO$94.7M4%
Alzheimer's collaboration Revenue$59.5M2%
Other revenue from anti-CD20 therapeutic programs$7.2M0%

NSC
NSC

Railway Operating Revenues Market Group Merchandise$1.9B63%
Metals And Construction$404.0M14%
Railway Operating Revenues Market Group Coal$347.0M12%
Automotive$293.0M10%

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