BIIB Smart Money
Biogen Inc.
1W: +8.0%
1M: +10.8%
3M: +22.7%
YTD: +41.9%
1Y: +68.1%
3Y: -2.0%
5Y: -6.5%
$252.73
+0.47 (+0.19%)
After Hours: $251.83 (-0.90, -0.35%)
Weekly Expected Move ±4.4%
$229
$240
$251
$262
$273
Credit Risk of going bust: lower than 68% of companies Debt: 18.3% of company value Bonds: $137.0M held by 192 funds, 91 bp over Treasuries → details ▾
Of US companies ranked in the safest four tenths, about 1 in 3,500 filed for bankruptcy within a year (2020-2025).
If the stock fell to about $4.22 (down 98%), Biogen Inc. would be worth roughly what it owes.
Total debt $8.36B against a stock market value of $37.27B.
Distance to default 7.34 (Merton model): prices to 2026-10-26, balance sheet 2026-06-30, debt counted $4.45B (short-term plus half of long-term), stock volatility 33.9%; Altman Z 3.16. A ranking and a back-test, not a forecast.
Bond figures are fund-reported marks (SEC N-PORT) as of Jul 2026. How these are computed.
If the stock fell to about $4.22 (down 98%), Biogen Inc. would be worth roughly what it owes.
Total debt $8.36B against a stock market value of $37.27B.
Distance to default 7.34 (Merton model): prices to 2026-10-26, balance sheet 2026-06-30, debt counted $4.45B (short-term plus half of long-term), stock volatility 33.9%; Altman Z 3.16. A ranking and a back-test, not a forecast.
Bond figures are fund-reported marks (SEC N-PORT) as of Jul 2026. How these are computed.
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🏦 Institutional Activity
Latest: Q2 20261,134
Institutions Holding
+9 vs prior
81.9%
Ownership
+17.37%
126
New
426
Increased
380
Reduced
84
Closed
👔 Insider Trades
25 records| Date | Name | Title | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-02 | Godbout Sean | officer: chief accounting officer | F-Tax Withholding | 8 | $219.88 | $2K | Filing |
| 2026-08-04 | Minor Lloyd | director | S-Sale | 593 | $200.96 | $119K | Filing |
| 2026-08-03 | Minor Lloyd | director | S-Sale | 593 | $203.34 | $121K | Filing |
| 2026-06-09 | Pangalos Menelas N | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | Minor Lloyd | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | Mantas Jesus B | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | Rowinsky Eric K | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | SHERWIN STEPHEN A | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | HAWKINS WILLIAM A | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | Patolawala Monish D | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | LANGER SUSAN | director | A-Grant/Award | 1,505 | $— | $0 | Filing |
| 2026-06-09 | Freire Maria C | director | A-Grant/Award | 2,005 | $— | $0 | Filing |
| 2026-05-01 | Keeney Adam | officer: head of corporate development | F-Tax Withholding | 455 | $187.06 | $85K | Filing |
| 2026-02-12 | Murphy Nicole | officer: head of pharm ops and tech | P-Purchase | 3 | $195.03 | $585 | Filing |
| 2026-02-09 | Singhal Priya | officer: head of development | S-Sale | 2,660 | $199.83 | $532K | Filing |
| 2026-02-06 | Godbout Sean | officer: chief accounting officer | F-Tax Withholding | 103 | $201.18 | $21K | Filing |
| 2026-02-06 | Murphy Nicole | officer: head of pharm ops and tech | F-Tax Withholding | 1,017 | $201.18 | $205K | Filing |
| 2026-02-06 | Kramer Robin | officer: chief financial officer | F-Tax Withholding | 1,063 | $201.18 | $214K | Filing |
| 2026-02-06 | Kramer Robin | officer: chief financial officer | F-Tax Withholding | 207 | $201.18 | $42K | Filing |
| 2026-02-06 | Keeney Adam | officer: head of corporate development | F-Tax Withholding | 589 | $201.18 | $118K | Filing |
| 2026-02-06 | Izzar Rachid | officer: head of global product strat. | F-Tax Withholding | 775 | $201.18 | $156K | Filing |
| 2026-02-06 | Izzar Rachid | officer: head of global product strat. | F-Tax Withholding | 458 | $201.18 | $92K | Filing |
| 2026-02-06 | Grogan Jane | officer: head of research | F-Tax Withholding | 584 | $201.18 | $117K | Filing |
| 2026-02-06 | ALEXANDER SUSAN H | officer: evp chief legal officer | F-Tax Withholding | 931 | $201.18 | $187K | Filing |
| 2026-02-06 | ALEXANDER SUSAN H | officer: evp chief legal officer | F-Tax Withholding | 1,059 | $201.18 | $213K | Filing |
🏛️ Congressional Trades
25 records| Date | Politician | Chamber | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-09-24 | Maria Elvira Salazar | House | Sell | $1,001 - $15,000 | Filing |
| 2026-09-11 | Ro Khanna | House | Sell | $1,001 - $15,000 | Filing |
| 2026-09-04 | Ro Khanna | House | Buy | $1,001 - $15,000 | Filing |
| 2026-08-18 | Kevin Hern | House | Sell | $1,001 - $15,000 | Filing |
| 2026-08-18 | Kevin Hern | House | Sell | $1,001 - $15,000 | Filing |
| 2026-08-17 | Kevin Hern | House | Sell | $1,001 - $15,000 | Filing |
| 2026-06-05 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2026-06-05 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2026-06-04 | Gilbert Ray Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2026-06-02 | Maria Elvira Salazar | House | Sell | $15,001 - $50,000 | Filing |
| 2026-06-02 | Maria Elvira Salazar | House | Sell | $15,001 - $50,000 | Filing |
| 2026-06-01 | Maria Elvira Salazar | House | Sell | $15,001 - $50,000 | Filing |
| 2026-05-12 | Maria Elvira Salazar | House | Buy | $1,001 - $15,000 | Filing |
| 2026-05-12 | Maria Elvira Salazar | House | Buy | $1,001 - $15,000 | Filing |
| 2026-05-11 | Maria Elvira Salazar | House | Buy | $50,001 - $100,000 | Filing |
| 2026-05-11 | Maria Elvira Salazar | House | Buy | $50,001 - $100,000 | Filing |
| 2026-05-11 | Maria Elvira Salazar | House | Buy | $1,001 - $15,000 | Filing |
| 2026-05-11 | Maria Elvira Salazar | House | Buy | $1,001 - $15,000 | Filing |
| 2026-05-10 | Maria Elvira Salazar | House | Buy | $50,001 - $100,000 | Filing |
| 2026-05-10 | Maria Elvira Salazar | House | Buy | $1,001 - $15,000 | Filing |
| 2026-01-30 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2026-01-29 | Gilbert Ray Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-05-15 | Rob Bresnahan | House | Buy | $1,001 - $15,000 | Filing |
| 2025-05-14 | Robert P. Bresnahan | House | Buy | $1,001 - $15,000 | Filing |
| 2025-04-08 | Rob Bresnahan | House | Sell | $1,001 - $15,000 | Filing |
🏦 Top Institutional Holders
20 holders| Holder | Shares | Value | Date Reported | Filing | |
|---|---|---|---|---|---|
| FMR LLC | 18,217,239 | $3.9B | +5,409,698 | 2026-06-30 | Filing |
| BlackRock, Inc. | 15,985,736 | $3.5B | +11,135 | 2026-06-30 | Filing |
| PRIMECAP MANAGEMENT CO/CA | 15,154,606 | $3.3B | +396,999 | 2026-06-30 | Filing |
| VANGUARD CAPITAL MANAGEMENT LLC | 9,651,117 | $2.1B | +113,700 | 2026-06-30 | Filing |
| STATE STREET CORP | 7,344,327 | $1.6B | +176,405 | 2026-06-30 | Filing |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6,604,936 | $1.4B | +73,209 | 2026-06-30 | Filing |
| GEODE CAPITAL MANAGEMENT, LLC | 4,449,295 | $958M | +106,693 | 2026-06-30 | Filing |
| WELLINGTON MANAGEMENT GROUP LLP | 3,117,469 | $674M | +155,828 | 2026-06-30 | Filing |
| NORGES BANK | 2,580,033 | $557M | +2,580,033 | 2026-06-30 | Filing |
| MORGAN STANLEY | 2,411,271 | $521M | +240,331 | 2026-06-30 | Filing |
| AQR CAPITAL MANAGEMENT LLC | 1,936,859 | $417M | +13,302 | 2026-06-30 | Filing |
| JPMORGAN CHASE & CO | 1,823,140 | $395M | -192,869 | 2026-06-30 | Filing |
| Invesco Ltd. | 1,803,944 | $390M | +58,689 | 2026-06-30 | Filing |
| Amundi | 1,516,831 | $328M | +726,004 | 2026-06-30 | Filing |
| Legal & General Group Plc | 1,493,289 | $323M | +143,457 | 2026-06-30 | Filing |
| NORTHERN TRUST CORP | 1,429,490 | $309M | -17,089 | 2026-06-30 | Filing |
| Boston Partners | 1,263,429 | $273M | -436,649 | 2026-06-30 | Filing |
| UBS AM, a distinct business unit of UBS | 1,255,168 | $271M | -122,400 | 2026-06-30 | Filing |
| GOLDMAN SACHS GROUP INC | 1,230,390 | $266M | +179,296 | 2026-06-30 | Filing |
| DIMENSIONAL FUND ADVISORS LP | 1,148,568 | $248M | +69,449 | 2026-06-30 | Filing |