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Side-by-side financial comparison of Biogen (BIIB) and Permian Resources Corp (PR). 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 2.1× Permian Resources Corp). Permian Resources Corp runs the higher net margin — 29.0% vs 12.9%, a 16.1% gap on every dollar of revenue. On growth, Biogen posted the faster year-over-year revenue change (2.0% vs -9.8%). Over the past eight quarters, Biogen's revenue compounded faster (0.3% CAGR vs -3.0%).

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 ...

Pioneer Natural Resources Company, headquartered in Irving, Texas, was a company engaged in hydrocarbon exploration. It operated in the Cline Shale, which is part of the Spraberry Trend of the Permian Basin, where the company was the largest acreage holder. In May 2024, the company was acquired by ExxonMobil.

BIIB vs PR — Head-to-Head

Bigger by revenue
BIIB
BIIB
2.1× larger
BIIB
$2.5B
$1.2B
PR
Growing faster (revenue YoY)
BIIB
BIIB
+11.8% gap
BIIB
2.0%
-9.8%
PR
Higher net margin
PR
PR
16.1% more per $
PR
29.0%
12.9%
BIIB
Faster 2-yr revenue CAGR
BIIB
BIIB
Annualised
BIIB
0.3%
-3.0%
PR

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
BIIB
BIIB
PR
PR
Revenue
$2.5B
$1.2B
Net Profit
$319.5M
$339.5M
Gross Margin
Operating Margin
23.1%
Net Margin
12.9%
29.0%
Revenue YoY
2.0%
-9.8%
Net Profit YoY
32.8%
56.7%
EPS (diluted)
$2.15
$0.48

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
PR
PR
Q1 26
$2.5B
Q4 25
$2.3B
$1.2B
Q3 25
$2.5B
$1.3B
Q2 25
$2.6B
$1.2B
Q1 25
$2.4B
$1.4B
Q4 24
$2.5B
$1.3B
Q3 24
$2.5B
$1.2B
Q2 24
$2.5B
$1.2B
Net Profit
BIIB
BIIB
PR
PR
Q1 26
$319.5M
Q4 25
$-48.9M
$339.5M
Q3 25
$466.5M
$59.2M
Q2 25
$634.8M
$207.1M
Q1 25
$240.5M
$329.3M
Q4 24
$266.7M
$216.7M
Q3 24
$388.5M
$386.4M
Q2 24
$583.6M
$235.1M
Gross Margin
BIIB
BIIB
PR
PR
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
PR
PR
Q1 26
Q4 25
-2.5%
23.1%
Q3 25
22.0%
29.6%
Q2 25
28.1%
24.8%
Q1 25
12.8%
36.6%
Q4 24
11.9%
32.8%
Q3 24
18.3%
32.5%
Q2 24
28.3%
36.5%
Net Margin
BIIB
BIIB
PR
PR
Q1 26
12.9%
Q4 25
-2.1%
29.0%
Q3 25
18.4%
4.5%
Q2 25
24.0%
17.3%
Q1 25
9.9%
23.9%
Q4 24
10.9%
16.7%
Q3 24
15.8%
31.8%
Q2 24
23.7%
18.9%
EPS (diluted)
BIIB
BIIB
PR
PR
Q1 26
$2.15
Q4 25
$-0.35
$0.48
Q3 25
$3.17
$0.08
Q2 25
$4.33
$0.28
Q1 25
$1.64
$0.44
Q4 24
$1.82
$0.31
Q3 24
$2.66
$0.53
Q2 24
$4.00
$0.36

Balance Sheet & Financial Strength

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

Metric
BIIB
BIIB
PR
PR
Cash + ST InvestmentsLiquidity on hand
$3.4B
$153.7M
Total DebtLower is stronger
$3.5B
Stockholders' EquityBook value
$18.7B
$10.3B
Total Assets
$29.5B
$17.9B
Debt / EquityLower = less leverage
0.34×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BIIB
BIIB
PR
PR
Q1 26
$3.4B
Q4 25
$153.7M
Q3 25
$111.8M
Q2 25
$451.0M
Q1 25
$702.2M
Q4 24
$479.3M
Q3 24
$272.0M
Q2 24
$47.8M
Total Debt
BIIB
BIIB
PR
PR
Q1 26
Q4 25
$6.3B
$3.5B
Q3 25
$6.3B
$3.5B
Q2 25
$6.3B
$4.0B
Q1 25
$4.5B
$4.0B
Q4 24
$6.3B
$4.2B
Q3 24
$4.5B
$4.2B
Q2 24
$6.3B
$3.9B
Stockholders' Equity
BIIB
BIIB
PR
PR
Q1 26
$18.7B
Q4 25
$18.3B
$10.3B
Q3 25
$18.2B
$10.0B
Q2 25
$17.6B
$9.5B
Q1 25
$17.0B
$9.4B
Q4 24
$16.7B
$9.1B
Q3 24
$16.4B
$9.0B
Q2 24
$15.9B
$8.3B
Total Assets
BIIB
BIIB
PR
PR
Q1 26
$29.5B
Q4 25
$29.4B
$17.9B
Q3 25
$29.2B
$17.3B
Q2 25
$28.3B
$17.5B
Q1 25
$28.0B
$17.1B
Q4 24
$28.0B
$16.9B
Q3 24
$28.3B
$16.6B
Q2 24
$26.8B
$15.4B
Debt / Equity
BIIB
BIIB
PR
PR
Q1 26
Q4 25
0.34×
0.34×
Q3 25
0.35×
0.35×
Q2 25
0.36×
0.42×
Q1 25
0.27×
0.43×
Q4 24
0.38×
0.46×
Q3 24
0.28×
0.47×
Q2 24
0.40×
0.46×

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
PR
PR
Operating Cash FlowLast quarter
$904.3M
Free Cash FlowOCF − Capex
$594.3M
FCF MarginFCF / Revenue
24.0%
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
2.66×
TTM Free Cash FlowTrailing 4 quarters
$2.4B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BIIB
BIIB
PR
PR
Q1 26
Q4 25
$511.9M
$904.3M
Q3 25
$1.3B
$766.5M
Q2 25
$160.9M
$1.0B
Q1 25
$259.3M
$898.0M
Q4 24
$760.9M
$871.6M
Q3 24
$935.6M
$954.4M
Q2 24
$625.8M
$938.4M
Free Cash Flow
BIIB
BIIB
PR
PR
Q1 26
$594.3M
Q4 25
$468.0M
Q3 25
$1.2B
Q2 25
$134.3M
Q1 25
$222.2M
Q4 24
$721.6M
Q3 24
$900.6M
Q2 24
$592.3M
FCF Margin
BIIB
BIIB
PR
PR
Q1 26
24.0%
Q4 25
20.5%
Q3 25
48.4%
Q2 25
5.1%
Q1 25
9.1%
Q4 24
29.4%
Q3 24
36.5%
Q2 24
24.0%
Capex Intensity
BIIB
BIIB
PR
PR
Q1 26
Q4 25
1.9%
Q3 25
1.8%
Q2 25
1.0%
Q1 25
1.5%
Q4 24
1.6%
Q3 24
1.4%
Q2 24
1.4%
Cash Conversion
BIIB
BIIB
PR
PR
Q1 26
Q4 25
2.66×
Q3 25
2.73×
12.94×
Q2 25
0.25×
5.01×
Q1 25
1.08×
2.73×
Q4 24
2.85×
4.02×
Q3 24
2.41×
2.47×
Q2 24
1.07×
3.99×

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%

PR
PR

Crude Oil$1.0B87%
Natural Gas Liquids Reserves$145.1M12%

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