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BIIB BIOGEN INC.

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Health Care · Pharmaceuticals & Biotechnology · data as of 2026-10-22 · latest quarter 2026-06-30, filed 2026-07-29

Market cap
$37.51B
P/E (trailing)
45.0×
P/E vs. sector
1.7×
FCF yield
6.2%
Avg daily $ volume
$311.27M
Days to next report
7
Quality checklist

3 of 6 checks passed · quarter ending 2026-06-30

  • ROIC at least 10%3.4%
  • Operating margin up over 3 years−21.2 pp
  • Free cash flow at least 80% of net income323.1%
  • Share count up at most 5% in 3 years2.0%
  • Net debt at most 3× EBITDA3.2×
  • Revenue grew over 3 years0.2%
Insider buying, last 90 days

No discretionary insider buying in the last 90 days.

Tracked funds, latest reports
Active managers
+$1.31B +4.1 pp of the company
4 buying · 0 selling · 4 holding
Mutual funds & ETFs
+$374.94M +1.2 pp of the company
2 buying · 1 selling · 5 holding

Each factor with its sector median and, where it's reported per quarter, its last 12 quarters.

Size & liquidity
BIIBSector12 quartersMarket cap$37.51B$9.67BEnterprise value$43.52B$10.41BAvg daily $ volume$311.27M$132.68MDaily turnover0.8%1.3%
Growth
BIIBSector12 quartersRevenue CAGR 3y0.2%9.5%-8.5% → 0.2%Revenue CAGR 5y-3.0%8.9%-4.6% → -3.0%Revenue growth YoY3.4%8.7%0.9% → 3.4%Revenue acceleration+1.5 pp+0.0 pp+6.0 pp → +1.5 ppFCF growth YoY36.3%5.9%-51.6% → 36.3%FCF conversion323.1%130.8%72.6% → 323.1%Forward growth (HoM est.)1.8%9.8%
Valuation
BIIBSector12 quartersP/E (trailing)45.0×27.6×P/E (forward, HoM est.)44.1×25.2×P/E vs. sector1.7×1.0×PEG (HoM est.)24.463.12EV/EBITDA23.5×17.5×EV/Sales4.3×3.3×FCF yield6.2%3.6%Dividend yield0.0%0.0%Shareholder yield0.0%1.2%
Quality
BIIBSector12 quartersQuality checks passed33ROIC3.4%9.2%7.7% → 3.4%Gross profitability23.1%32.6%26.6% → 23.1%Gross margin74.0%60.1%75.1% → 74.0%Gross margin Δ 3y−3.0 pp−0.1 pp−10.5 pp → −3.0 ppOperating margin10.1%10.6%16.1% → 10.1%Operating margin Δ 3y−21.2 pp+0.9 pp−15.7 pp → −21.2 ppDebt/equity0.4×0.7×0.5× → 0.4×Net debt/EBITDA3.2×2.0×2.2× → 3.2×Interest coverage3.5×4.9×7.0× → 3.5×Share count Δ 3y2.0%-0.3%-5.8% → 2.0%Stock compensation / revenue3.0%1.8%2.8% → 3.0%Accruals ratio-6.8%-4.3%0.4% → -6.8%
Earnings & estimates
BIIBSector12 quartersDays to next report713
Ownership & positioning
BIIBSector12 quartersInsider buys (90d)00Insiders buying (90d)00Insider net value (90d)$0$0Institutional ownership96.3%99.6%Institutional Δ QoQ+4.5 pp+1.1 ppConviction funds net buying—−0.0 ppActive managers net buying+4.1 pp+0.1 ppActive funds net buying+1.2 pp+0.0 ppDays to cover4.874.29Short % of shares out4.0%6.0%Short interest Δ+0.1 pp+0.1 pp

Data provided for free by IEX. By accessing or using IEX Historical Data, you agree to the IEX Historical Data Terms of Use. Terms of use

Source: SEC EDGAR: Forms 4 (insider trades), 10-Q and 10-K (financials). Insider trades as filed (amendments applied); financial metrics computed by Hand of the Market from the companies' quarterly and annual reports. Each trade links to its filing.

Not investment advice. These signals are starting points for research, not recommendations. Data may contain errors or lag the filings.