GILD vs BIIB Stock Comparison

Gilead Sciences and Biogen Prices as of Oct 26, 2026 Peers: Industry group
GILD Gilead Sciences, Inc.
$158.69 +5.1% 1M +31.2% 1Y
Market cap
$196.44B
P/E
–
Revenue (TTM)
$30.46B
Div. yield
–
Biotechnology Healthcare
4 wins
BIIB Biogen Inc.
$252.26 +10.8% 1M +68.3% 1Y
Market cap
$37.37B
P/E
44.8x
Revenue (TTM)
$10.03B
Div. yield
–
Biotechnology Healthcare
5 wins

Head to Head

9 decided of 12

Biogen leads on 5 of the 12 questions below (Biogen 5, Gilead Sciences 4). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionGILDBIIBLeader
Larger companyMarket capitalisation $196.44B $37.37B GILD
Cheaper on earningsLower P/E, profitable companies only -60.6x 44.8x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 19.7x –
Faster revenue growthRevenue growth, trailing twelve months +5.5% +0.3% GILD
More profitableNet margin, trailing twelve months -10.6% 8.3% BIIB
Better return on capitalReturn on invested capital -6.0% 3.3% BIIB
Less leveragedLower net debt / EBITDA 87.7x 3.2x BIIB
Higher dividend yieldTrailing dividend yield 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +31.2% +68.3% BIIB
Better 5-year returnAnnualised price return, 5 years +18.9%/yr -0.6%/yr GILD
Less volatileAnnualised volatility, 1 year 27.0% 34.1% GILD
Higher overall scoreMean of the five percentile scores vs peers 61/100 62/100 BIIB

Percentile Scorecard

GILDBIIB

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisGILDBIIB
Valuation 90 #62 of 626 92 #51 of 626
Growth 31 #420 of 604 34 #397 of 604
Profitability 85 #85 of 555 88 #66 of 555
Financial Health 21 #518 of 658 35 #428 of 658
Shareholder Returns 77 #85 of 368 –
Overall 61 62
  • GILD ranked among 673 companies in Pharmaceuticals and Biotechnology
  • BIIB ranked among 673 companies in Pharmaceuticals and Biotechnology

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodGILDBIIBSPY
1 month +5.1%+10.8% -0.8%
3 months +21.6%+26.0% +3.5%
6 months +24.2%+39.6% +7.0%
Year to date +29.3%+43.3% +12.2%
1 year +31.2%+68.3% +13.0%
3 years +107.1%+7.6% +86.3%
3 years, per year +27.5%+2.5% +23.1%
5 years +137.7%-3.0% +68.6%
5 years, per year +18.9%-0.6% +11.0%
10 years +110.5%-14.9% +258.0%
10 years, per year +7.7%-1.6% +13.6%

Risk

MeasureGILDBIIBSPY
Volatility, 1Y 27.0%34.1% 12.7%
Downside volatility, 1Y 24.0%32.3% 12.7%
Beta vs S&P 500, 1Y 0.300.26 1.00
Return / volatility, 1Y 1.162.00 1.02
Max drawdown, 5Y -29.4%-64.4% -25.4%
From 52-week high 0.0%-0.6% -1.8%
52-week high $158.69$253.84 $779.14
52-week low $117.88$147.86 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleGILDBIIB
P/E now vs peer median -60.9xmedian 17.1x 44.6xmedian 17.1x
P/S now vs peer median 6.5xmedian 8.8x 3.7xmedian 8.8x
EV/EBITDA now vs peer median 836.5xmedian 17.1x 23.3xmedian 17.1x
P/FCF now vs peer median 15.2xmedian 18.0x 13.8xmedian 18.0x
P/B now vs peer median 16.6xmedian 2.1x 2.0xmedian 2.1x
PEG now vs peer median 1.62median 0.31 -1.37median 0.31

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsGILDBIIB
Revenue $30.46B $10.03B
Gross profit $24.24B $7.42B
Operating income -$2.50B $1.01B
Net income -$3.24B $834.60M
Free cash flow $12.94B $2.70B
R&D $6.07B $2.01B
EPS (diluted) $-2.61 $5.61
Cash & equivalents $3.18B $1.29B
Total debt $26.25B $7.29B
Shares (diluted) 1.24B 148.70M
Enterprise value $170.64B $24.02B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricGILDBIIB
P/E -60.9x 44.6x
P/FCF 15.2x 13.8x
P/Operating cash flow 14.5x 12.9x
P/S 6.5x 3.7x
P/B 16.6x 2.0x
P/Tangible book -89.4x 7.0x
EV/EBITDA 836.5x 23.3x
EV/EBIT -88.1x 42.8x
EV/Revenue 7.2x 4.3x
EV/FCF 17.0x 16.0x
EV/Operating cash flow 16.2x 15.0x
PEG (3Y EPS CAGR) 1.62 -1.37

Growth

14 metrics
MetricGILDBIIB
Revenue growth (1Y) 5.5% 0.3%
Revenue CAGR (3Y) 3.6% 0.2%
Gross profit growth (1Y) 6.9% -1.6%
Gross profit CAGR (3Y) 3.7% -1.1%
Operating income growth (1Y) -131.0% -43.7%
Operating income CAGR (3Y) -31.9% -31.3%
Net income growth (1Y) -151.3% -45.5%
Net income CAGR (3Y) -37.3% -32.1%
EPS growth (1Y) -151.8% -46.2%
EPS CAGR (3Y) -37.5% -32.6%
Operating cash flow growth (1Y) 37.3% 36.0%
Operating cash flow CAGR (3Y) 12.5% 26.3%
Free cash flow growth (1Y) 38.1% 36.3%
Free cash flow CAGR (3Y) 13.2% 33.0%

Profitability

14 metrics
MetricGILDBIIB
Gross margin 79.6% 74.0%
EBITDA margin 0.9% 18.5%
Operating margin -8.2% 10.1%
Pretax margin -6.4% 10.1%
Net margin -10.6% 8.3%
FCF margin 42.5% 26.9%
Operating cash flow margin 44.5% 28.7%
Return on equity -18.4% 4.5%
Return on assets -6.1% 2.7%
Return on invested capital -6.0% 3.3%
Return on capital employed -6.0% 3.8%
Asset turnover 0.6x 0.3x
Cash conversion (OCF / net income) -4.2x 3.4x
Stock comp / revenue 3.0% 3.0%

Financial Health

11 metrics
MetricGILDBIIB
Debt / assets 53.2% 22.7%
Debt / equity 2.2x 0.4x
Net debt / EBITDA 87.7x 3.2x
Debt / FCF 2.0x 2.7x
Liabilities / assets 76.0% 41.3%
Equity / assets 24.0% 58.7%
Interest coverage -2.5x –
Current ratio 1.3x 1.9x
Quick ratio 0.7x 1.1x
Cash ratio 0.3x 0.3x
Altman Z-score 3.73 3.15

Shareholder Returns

7 metrics
MetricGILDBIIB
Dividend yield 2.0% –
Net buyback yield 0.6% –
Shareholder yield 2.6% –
Payout ratio (earnings) – –
Payout ratio (FCF) – –
Dividend growth (1Y) – –
Dividend CAGR (3Y) – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusGILDBIIB
Forward P/E – 19.7xFY2026
EPS, next fiscal year $-0.39FY2026 $12.81FY2026
EPS growth, next FY -104.8%FY2026 -16.2%FY2026
EPS growth, the year after – +36.5%
Revenue, next fiscal year $28.65BFY2026 $9.96BFY2026
Revenue growth, next FY -2.7%FY2026 +0.7%FY2026
Revenue growth, the year after +18.1% +11.9%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersGILDBIIB
Held by institutions 89.6% 96.4%
Institutions holding 2,290 1,036
Change in shares held, QoQ +5.1% +6.0%
Institutions buying 1,113 548
Institutions selling 850 294
Buyers to sellers 1.31 1.86

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

GILDBIIB
GILD 1.00 0.40
BIIB 0.40 1.00

Add a Peer

Largest companies in the same industry

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Frequently Asked Questions

Which is bigger, GILD and BIIB?

Gilead Sciences (GILD) is the largest by market capitalisation: Gilead Sciences (GILD) $196.44B, Biogen (BIIB) $37.37B.

Which company is growing faster?

Gilead Sciences (GILD) grew revenue fastest over the trailing twelve months: Gilead Sciences (GILD) +5.5%, Biogen (BIIB) +0.3%.

Which company is more profitable?

Biogen (BIIB) has the highest net margin (Gilead Sciences (GILD) -10.6%, Biogen (BIIB) 8.3%). On return on invested capital, Biogen (BIIB) leads (Gilead Sciences (GILD) -6.0%, Biogen (BIIB) 3.3%).

Which stock has performed better?

Over the past year Biogen (BIIB) returned the most: Gilead Sciences (GILD) +31.2%, Biogen (BIIB) +68.3%. Over five years, Gilead Sciences (GILD) compounded fastest (Gilead Sciences (GILD) +18.9%/yr, Biogen (BIIB) -0.6%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Gilead Sciences (GILD) has been the steadiest (Gilead Sciences (GILD) 27.0%, Biogen (BIIB) 34.1%). Volatility measures how widely the price swings, not the risk of the business.

Do GILD and BIIB move together?

Their daily returns over the past year have a correlation of 0.40, a weak relationship. Holding both diversifies more than two closely linked stocks would.

Which is the better stock, GILD and BIIB?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Biogen (BIIB) leads on 5. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.