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Side-by-side financial comparison of ARM HOLDINGS PLC (ARM) and Biogen (BIIB). Click either name above to swap in a different company.

Biogen is the larger business by last-quarter revenue ($2.5B vs $1.2B, roughly 2.0× ARM HOLDINGS PLC). ARM HOLDINGS PLC runs the higher net margin — 18.0% vs 12.9%, a 5.1% gap on every dollar of revenue. On growth, ARM HOLDINGS PLC posted the faster year-over-year revenue change (26.3% vs 2.0%). Biogen produced more free cash flow last quarter ($594.3M vs $186.0M). Over the past eight quarters, ARM HOLDINGS PLC's revenue compounded faster (24.1% CAGR vs 0.3%).

Arm Holdings plc is a British semiconductor and software design company headquartered in Cambridge, UK. It designs the Arm CPU architecture and licenses its processor designs and related intellectual property to chipmakers and device manufacturers worldwide. Arm-based chips power the vast majority of smartphones and an increasing share of laptops, data center servers, and embedded devices. The company listed on Nasdaq in September 2023 and remains majority-owned by SoftBank.

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 ...

ARM vs BIIB — Head-to-Head

Bigger by revenue
BIIB
BIIB
2.0× larger
BIIB
$2.5B
$1.2B
ARM
Growing faster (revenue YoY)
ARM
ARM
+24.3% gap
ARM
26.3%
2.0%
BIIB
Higher net margin
ARM
ARM
5.1% more per $
ARM
18.0%
12.9%
BIIB
More free cash flow
BIIB
BIIB
$408.3M more FCF
BIIB
$594.3M
$186.0M
ARM
Faster 2-yr revenue CAGR
ARM
ARM
Annualised
ARM
24.1%
0.3%
BIIB

Income Statement — Q3 FY2026 vs Q1 FY2026

Metric
ARM
ARM
BIIB
BIIB
Revenue
$1.2B
$2.5B
Net Profit
$223.0M
$319.5M
Gross Margin
97.6%
Operating Margin
14.9%
Net Margin
18.0%
12.9%
Revenue YoY
26.3%
2.0%
Net Profit YoY
-11.5%
32.8%
EPS (diluted)
$0.21
$2.15

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
ARM
ARM
BIIB
BIIB
Q1 26
$2.5B
Q4 25
$1.2B
$2.3B
Q3 25
$1.1B
$2.5B
Q2 25
$1.1B
$2.6B
Q1 25
$2.4B
Q4 24
$983.0M
$2.5B
Q3 24
$844.0M
$2.5B
Q2 24
$939.0M
$2.5B
Net Profit
ARM
ARM
BIIB
BIIB
Q1 26
$319.5M
Q4 25
$223.0M
$-48.9M
Q3 25
$238.0M
$466.5M
Q2 25
$130.0M
$634.8M
Q1 25
$240.5M
Q4 24
$252.0M
$266.7M
Q3 24
$107.0M
$388.5M
Q2 24
$223.0M
$583.6M
Gross Margin
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
97.6%
78.3%
Q3 25
97.4%
73.4%
Q2 25
97.2%
77.1%
Q1 25
74.1%
Q4 24
97.2%
76.2%
Q3 24
96.2%
74.1%
Q2 24
96.5%
77.8%
Operating Margin
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
14.9%
-2.5%
Q3 25
14.4%
22.0%
Q2 25
10.8%
28.1%
Q1 25
12.8%
Q4 24
17.8%
11.9%
Q3 24
7.6%
18.3%
Q2 24
19.4%
28.3%
Net Margin
ARM
ARM
BIIB
BIIB
Q1 26
12.9%
Q4 25
18.0%
-2.1%
Q3 25
21.0%
18.4%
Q2 25
12.3%
24.0%
Q1 25
9.9%
Q4 24
25.6%
10.9%
Q3 24
12.7%
15.8%
Q2 24
23.7%
23.7%
EPS (diluted)
ARM
ARM
BIIB
BIIB
Q1 26
$2.15
Q4 25
$0.21
$-0.35
Q3 25
$0.22
$3.17
Q2 25
$0.12
$4.33
Q1 25
$1.64
Q4 24
$0.24
$1.82
Q3 24
$0.10
$2.66
Q2 24
$0.21
$4.00

Balance Sheet & Financial Strength

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

Metric
ARM
ARM
BIIB
BIIB
Cash + ST InvestmentsLiquidity on hand
$3.5B
$3.4B
Total DebtLower is stronger
Stockholders' EquityBook value
$7.8B
$18.7B
Total Assets
$10.2B
$29.5B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ARM
ARM
BIIB
BIIB
Q1 26
$3.4B
Q4 25
$3.5B
Q3 25
$3.3B
Q2 25
$2.9B
Q1 25
Q4 24
$2.7B
Q3 24
$2.4B
Q2 24
$2.5B
Total Debt
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
$6.3B
Q3 25
$6.3B
Q2 25
$6.3B
Q1 25
$4.5B
Q4 24
$6.3B
Q3 24
$4.5B
Q2 24
$6.3B
Stockholders' Equity
ARM
ARM
BIIB
BIIB
Q1 26
$18.7B
Q4 25
$7.8B
$18.3B
Q3 25
$7.4B
$18.2B
Q2 25
$7.0B
$17.6B
Q1 25
$17.0B
Q4 24
$6.4B
$16.7B
Q3 24
$6.0B
$16.4B
Q2 24
$5.7B
$15.9B
Total Assets
ARM
ARM
BIIB
BIIB
Q1 26
$29.5B
Q4 25
$10.2B
$29.4B
Q3 25
$9.7B
$29.2B
Q2 25
$9.4B
$28.3B
Q1 25
$28.0B
Q4 24
$8.5B
$28.0B
Q3 24
$8.1B
$28.3B
Q2 24
$7.9B
$26.8B
Debt / Equity
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
0.34×
Q3 25
0.35×
Q2 25
0.36×
Q1 25
0.27×
Q4 24
0.38×
Q3 24
0.28×
Q2 24
0.40×

Cash Flow & Capital Efficiency

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

Metric
ARM
ARM
BIIB
BIIB
Operating Cash FlowLast quarter
$365.0M
Free Cash FlowOCF − Capex
$186.0M
$594.3M
FCF MarginFCF / Revenue
15.0%
24.0%
Capex IntensityCapex / Revenue
14.4%
Cash ConversionOCF / Net Profit
1.64×
TTM Free Cash FlowTrailing 4 quarters
$1.2B
$2.4B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
$365.0M
$511.9M
Q3 25
$567.0M
$1.3B
Q2 25
$332.0M
$160.9M
Q1 25
$259.3M
Q4 24
$423.0M
$760.9M
Q3 24
$6.0M
$935.6M
Q2 24
$-290.0M
$625.8M
Free Cash Flow
ARM
ARM
BIIB
BIIB
Q1 26
$594.3M
Q4 25
$186.0M
$468.0M
Q3 25
$429.0M
$1.2B
Q2 25
$178.0M
$134.3M
Q1 25
$222.2M
Q4 24
$360.0M
$721.6M
Q3 24
$-47.0M
$900.6M
Q2 24
$-319.0M
$592.3M
FCF Margin
ARM
ARM
BIIB
BIIB
Q1 26
24.0%
Q4 25
15.0%
20.5%
Q3 25
37.8%
48.4%
Q2 25
16.9%
5.1%
Q1 25
9.1%
Q4 24
36.6%
29.4%
Q3 24
-5.6%
36.5%
Q2 24
-34.0%
24.0%
Capex Intensity
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
14.4%
1.9%
Q3 25
12.2%
1.8%
Q2 25
14.6%
1.0%
Q1 25
1.5%
Q4 24
6.4%
1.6%
Q3 24
6.3%
1.4%
Q2 24
3.1%
1.4%
Cash Conversion
ARM
ARM
BIIB
BIIB
Q1 26
Q4 25
1.64×
Q3 25
2.38×
2.73×
Q2 25
2.55×
0.25×
Q1 25
1.08×
Q4 24
1.68×
2.85×
Q3 24
0.06×
2.41×
Q2 24
-1.30×
1.07×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ARM
ARM

Royalty$737.0M59%
Transferred Over Time$294.0M24%
Transferred At Point In Time$211.0M17%

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%

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