vs

Side-by-side financial comparison of Biogen (BIIB) and CELESTICA INC (CLS). Click either name above to swap in a different company.

CELESTICA INC is the larger business by last-quarter revenue ($4.0B vs $2.5B, roughly 1.6× Biogen). Biogen runs the higher net margin — 12.9% vs 5.2%, a 7.6% gap on every dollar of revenue. On growth, CELESTICA INC posted the faster year-over-year revenue change (52.8% vs 2.0%). Biogen produced more free cash flow last quarter ($594.3M vs $137.9M). Over the past eight quarters, CELESTICA INC's revenue compounded faster (35.4% CAGR vs 0.3%).

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 ...

Celestica Inc. is a Canadian multinational design, manufacturing, hardware platform, and supply chain electronics manufacturing services (EMS) company, which is headquartered in Toronto, Ontario. The company operates in 50 sites across 15 countries.

BIIB vs CLS — Head-to-Head

Bigger by revenue
CLS
CLS
1.6× larger
CLS
$4.0B
$2.5B
BIIB
Growing faster (revenue YoY)
CLS
CLS
+50.8% gap
CLS
52.8%
2.0%
BIIB
Higher net margin
BIIB
BIIB
7.6% more per $
BIIB
12.9%
5.2%
CLS
More free cash flow
BIIB
BIIB
$456.4M more FCF
BIIB
$594.3M
$137.9M
CLS
Faster 2-yr revenue CAGR
CLS
CLS
Annualised
CLS
35.4%
0.3%
BIIB

Income Statement — Q1 FY2026 vs Q1 FY2026

Metric
BIIB
BIIB
CLS
CLS
Revenue
$2.5B
$4.0B
Net Profit
$319.5M
$212.3M
Gross Margin
10.8%
Operating Margin
6723.5%
Net Margin
12.9%
5.2%
Revenue YoY
2.0%
52.8%
Net Profit YoY
32.8%
146.3%
EPS (diluted)
$2.15
$1.83

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
CLS
CLS
Q1 26
$2.5B
$4.0B
Q4 25
$2.3B
$3.7B
Q3 25
$2.5B
$3.2B
Q2 25
$2.6B
$2.9B
Q1 25
$2.4B
$2.6B
Q4 24
$2.5B
Q3 24
$2.5B
$2.5B
Q2 24
$2.5B
$2.4B
Net Profit
BIIB
BIIB
CLS
CLS
Q1 26
$319.5M
$212.3M
Q4 25
$-48.9M
$267.5M
Q3 25
$466.5M
$267.8M
Q2 25
$634.8M
$211.0M
Q1 25
$240.5M
$86.2M
Q4 24
$266.7M
Q3 24
$388.5M
$89.5M
Q2 24
$583.6M
$95.0M
Gross Margin
BIIB
BIIB
CLS
CLS
Q1 26
10.8%
Q4 25
78.3%
11.8%
Q3 25
73.4%
13.0%
Q2 25
77.1%
12.8%
Q1 25
74.1%
10.3%
Q4 24
76.2%
Q3 24
74.1%
10.4%
Q2 24
77.8%
10.6%
Operating Margin
BIIB
BIIB
CLS
CLS
Q1 26
6723.5%
Q4 25
-2.5%
8.6%
Q3 25
22.0%
10.2%
Q2 25
28.1%
9.4%
Q1 25
12.8%
4.9%
Q4 24
11.9%
Q3 24
18.3%
5.5%
Q2 24
28.3%
5.6%
Net Margin
BIIB
BIIB
CLS
CLS
Q1 26
12.9%
5.2%
Q4 25
-2.1%
7.3%
Q3 25
18.4%
8.4%
Q2 25
24.0%
7.3%
Q1 25
9.9%
3.3%
Q4 24
10.9%
Q3 24
15.8%
3.6%
Q2 24
23.7%
4.0%
EPS (diluted)
BIIB
BIIB
CLS
CLS
Q1 26
$2.15
$1.83
Q4 25
$-0.35
$2.29
Q3 25
$3.17
$2.31
Q2 25
$4.33
$1.82
Q1 25
$1.64
$0.74
Q4 24
$1.82
Q3 24
$2.66
$0.75
Q2 24
$4.00
$0.80

Balance Sheet & Financial Strength

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

Metric
BIIB
BIIB
CLS
CLS
Cash + ST InvestmentsLiquidity on hand
$3.4B
$378.0M
Total DebtLower is stronger
Stockholders' EquityBook value
$18.7B
$2.1B
Total Assets
$29.5B
$8260.0B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BIIB
BIIB
CLS
CLS
Q1 26
$3.4B
$378.0M
Q4 25
$595.6M
Q3 25
$305.9M
Q2 25
$313.8M
Q1 25
$303.0M
Q4 24
Q3 24
Q2 24
Total Debt
BIIB
BIIB
CLS
CLS
Q1 26
Q4 25
$6.3B
$750.5M
Q3 25
$6.3B
$756.7M
Q2 25
$6.3B
$848.6M
Q1 25
$4.5B
$915.0M
Q4 24
$6.3B
Q3 24
$4.5B
Q2 24
$6.3B
Stockholders' Equity
BIIB
BIIB
CLS
CLS
Q1 26
$18.7B
$2.1B
Q4 25
$18.3B
$2.2B
Q3 25
$18.2B
$2.0B
Q2 25
$17.6B
$1.8B
Q1 25
$17.0B
$1.6B
Q4 24
$16.7B
Q3 24
$16.4B
$1.8B
Q2 24
$15.9B
$1.8B
Total Assets
BIIB
BIIB
CLS
CLS
Q1 26
$29.5B
$8260.0B
Q4 25
$29.4B
$7.2B
Q3 25
$29.2B
$6.6B
Q2 25
$28.3B
$6.2B
Q1 25
$28.0B
$5.8B
Q4 24
$28.0B
Q3 24
$28.3B
Q2 24
$26.8B
Debt / Equity
BIIB
BIIB
CLS
CLS
Q1 26
Q4 25
0.34×
0.34×
Q3 25
0.35×
0.37×
Q2 25
0.36×
0.48×
Q1 25
0.27×
0.59×
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
BIIB
BIIB
CLS
CLS
Operating Cash FlowLast quarter
$356.3M
Free Cash FlowOCF − Capex
$594.3M
$137.9M
FCF MarginFCF / Revenue
24.0%
3.4%
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
1.68×
TTM Free Cash FlowTrailing 4 quarters
$2.4B
$502.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BIIB
BIIB
CLS
CLS
Q1 26
$356.3M
Q4 25
$511.9M
$250.6M
Q3 25
$1.3B
$126.2M
Q2 25
$160.9M
$152.4M
Q1 25
$259.3M
$130.3M
Q4 24
$760.9M
Q3 24
$935.6M
$122.8M
Q2 24
$625.8M
$99.6M
Free Cash Flow
BIIB
BIIB
CLS
CLS
Q1 26
$594.3M
$137.9M
Q4 25
$468.0M
$155.9M
Q3 25
$1.2B
$88.9M
Q2 25
$134.3M
$119.9M
Q1 25
$222.2M
$93.6M
Q4 24
$721.6M
Q3 24
$900.6M
$76.8M
Q2 24
$592.3M
$62.7M
FCF Margin
BIIB
BIIB
CLS
CLS
Q1 26
24.0%
3.4%
Q4 25
20.5%
4.3%
Q3 25
48.4%
2.8%
Q2 25
5.1%
4.1%
Q1 25
9.1%
3.5%
Q4 24
29.4%
Q3 24
36.5%
3.1%
Q2 24
24.0%
2.6%
Capex Intensity
BIIB
BIIB
CLS
CLS
Q1 26
Q4 25
1.9%
2.6%
Q3 25
1.8%
1.2%
Q2 25
1.0%
1.1%
Q1 25
1.5%
1.4%
Q4 24
1.6%
Q3 24
1.4%
1.8%
Q2 24
1.4%
1.5%
Cash Conversion
BIIB
BIIB
CLS
CLS
Q1 26
1.68×
Q4 25
0.94×
Q3 25
2.73×
0.47×
Q2 25
0.25×
0.72×
Q1 25
1.08×
1.51×
Q4 24
2.85×
Q3 24
2.41×
1.37×
Q2 24
1.07×
1.05×

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%

CLS
CLS

Segment breakdown not available.

Related Comparisons