BIIB Institutional Ownership
Biogen Inc.
1W: +4.0%
1M: +10.5%
3M: +20.8%
YTD: +42.1%
1Y: +68.6%
3Y: -1.8%
5Y: -5.7%
$252.73
+0.47 (+0.19%)
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 $37.34B.
Distance to default 7.34 (Merton model): prices to 2026-10-27, 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 $37.34B.
Distance to default 7.34 (Merton model): prices to 2026-10-27, 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.
Overview
News
Chart
Smart Money
Financials
Income Statement
Cash Flow
Balance Sheet
Earnings
Dividends
Analysis
Technicals
Weather
Peers
ESG
Institutions
ETF Exposure
Dark Pool
Short Interest
Supply Chain
Institutional Ownership — BIIB
1,134
Institutional Holders
+9 vs prior quarter
0.0%
Ownership
+0.00pp
$31B
Total Invested
126
New Positions
426
Increased
380
Reduced
84
Closed
0.79
Put/Call Ratio
Ownership Trends
Top Institutional Holders (1221 total)
| # | Holder | Shares | Value | Change | Change % | Holding Period | Filing |
|---|---|---|---|---|---|---|---|
| 1 | FMR LLC | 18,217,239 | $4.6B | +5,409,698 | +42.2% | 91Q | SEC ↗ |
| 2 | BlackRock, Inc. | 15,985,736 | $4.0B | +11,135 | +0.1% | 8Q | SEC ↗ |
| 3 | PRIMECAP MANAGEMENT CO/CA | 15,154,606 | $3.8B | +396,999 | +2.7% | 15Q | SEC ↗ |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 9,651,117 | $2.4B | +113,700 | +1.2% | 2Q | SEC ↗ |
| 5 | STATE STREET CORP | 7,344,327 | $1.9B | +176,405 | +2.5% | 46Q | SEC ↗ |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6,604,936 | $1.7B | +73,209 | +1.1% | 2Q | SEC ↗ |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 4,449,295 | $1.1B | +106,693 | +2.5% | 91Q | SEC ↗ |
| 8 | WELLINGTON MANAGEMENT GROUP LLP | 3,117,469 | $788M | +155,828 | +5.3% | 83Q | SEC ↗ |
| 9 | NORGES BANK NEW | 2,580,033 | $652M | — | +0.0% | 1Q | SEC ↗ |
| 10 | MORGAN STANLEY | 2,411,271 | $609M | +240,331 | +11.1% | 60Q | SEC ↗ |
| 11 | AQR CAPITAL MANAGEMENT LLC | 1,936,859 | $490M | +13,302 | +0.7% | 85Q | SEC ↗ |
| 12 | JPMORGAN CHASE & CO | 1,823,140 | $461M | -192,869 | -9.6% | 91Q | SEC ↗ |
| 13 | Invesco Ltd. | 1,803,944 | $456M | +58,689 | +3.4% | 87Q | SEC ↗ |
| 14 | Amundi | 1,516,831 | $383M | +726,004 | +91.8% | 21Q | SEC ↗ |
| 15 | Legal & General Group Plc | 1,493,289 | $377M | +143,457 | +10.6% | 27Q | SEC ↗ |
| 16 | NORTHERN TRUST CORP | 1,429,490 | $361M | -17,089 | -1.2% | 91Q | SEC ↗ |
| 17 | Boston Partners | 1,263,429 | $319M | -436,649 | -25.7% | 3Q | SEC ↗ |
| 18 | UBS AM, a distinct business unit of UB | 1,255,168 | $317M | -122,400 | -8.9% | 63Q | SEC ↗ |
| 19 | GOLDMAN SACHS GROUP INC | 1,230,390 | $311M | +179,296 | +17.1% | 15Q | SEC ↗ |
| 20 | DIMENSIONAL FUND ADVISORS LP | 1,148,568 | $290M | +69,449 | +6.4% | 91Q | SEC ↗ |
| 21 | Pacer Advisors, Inc. | 1,122,981 | $284M | +462,573 | +70.0% | 43Q | SEC ↗ |
| 22 | Sixth Street Partners Management Compa NEW | 1,117,663 | $282M | — | +0.0% | 1Q | SEC ↗ |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT I | 1,117,663 | $282M | -31,731 | -2.8% | 15Q | SEC ↗ |
| 24 | BANK OF AMERICA CORP /DE | 1,116,228 | $282M | -40,141 | -3.5% | 15Q | SEC ↗ |
| 25 | UBS Group AG | 1,030,150 | $260M | +506,700 | +96.8% | 47Q | SEC ↗ |
| 26 | Alyeska Investment Group, L.P. | 932,374 | $236M | +127,324 | +15.8% | 5Q | SEC ↗ |
| 27 | DEUTSCHE BANK AG | 894,035 | $226M | -169,793 | -16.0% | 52Q | SEC ↗ |
| 28 | Pictet Asset Management Holding SA | 851,819 | $215M | -61,509 | -6.7% | 12Q | SEC ↗ |
| 29 | VANGUARD FIDUCIARY TRUST CO | 829,318 | $210M | +3,787 | +0.5% | 2Q | SEC ↗ |
| 30 | Robeco Institutional Asset Management | 791,092 | $200M | +27,918 | +3.7% | 76Q | SEC ↗ |
| 31 | FRED ALGER MANAGEMENT, LLC | 788,307 | $199M | +55,113 | +7.5% | 4Q | SEC ↗ |
| 32 | PRICE T ROWE ASSOCIATES INC /MD | 774,283 | $196M | +101,856 | +15.1% | 16Q | SEC ↗ |
| 33 | Bank of New York Mellon Corp | 773,619 | $196M | -14,904 | -1.9% | 76Q | SEC ↗ |
| 34 | MASSACHUSETTS FINANCIAL SERVICES CO /M | 744,892 | $188M | +24,263 | +3.4% | 59Q | SEC ↗ |
| 35 | CITIGROUP INC | 734,517 | $186M | +234,010 | +46.8% | 91Q | SEC ↗ |
| 36 | ROYAL BANK OF CANADA | 708,562 | $179M | +177,185 | +33.3% | 87Q | SEC ↗ |
| 37 | Employees Provident Fund Board | 704,196 | $178M | — | +0.0% | 27Q | SEC ↗ |
| 38 | FIRST TRUST ADVISORS LP | 682,021 | $172M | +8,063 | +1.2% | 64Q | SEC ↗ |
| 39 | AustralianSuper Pty Ltd | 672,723 | $170M | +56,530 | +9.2% | 6Q | SEC ↗ |
| 40 | Artemis Investment Management LLP | 570,974 | $144M | -597 | -0.1% | 3Q | SEC ↗ |
| 41 | Zurcher Kantonalbank (Zurich Cantonalb | 540,001 | $136M | +17,846 | +3.4% | 59Q | SEC ↗ |
| 42 | HSBC HOLDINGS PLC | 527,866 | $133M | +64,214 | +13.8% | 91Q | SEC ↗ |
| 43 | Caisse de depot et placement du Quebec | 510,194 | $129M | -8,500 | -1.6% | 6Q | SEC ↗ |
| 44 | LSV ASSET MANAGEMENT | 444,049 | $112M | +110,310 | +33.1% | 8Q | SEC ↗ |
| 45 | CITADEL ADVISORS LLC | 418,356 | $106M | +280,263 | +203.0% | 8Q | SEC ↗ |
| 46 | Swiss National Bank | 413,900 | $105M | -16,700 | -3.9% | 53Q | SEC ↗ |
| 47 | National Pension Service | 406,064 | $103M | +4,397 | +1.1% | 48Q | SEC ↗ |
| 48 | BNP PARIBAS FINANCIAL MARKETS | 387,542 | $98M | -83,526 | -17.7% | 91Q | SEC ↗ |
| 49 | Candriam S.C.A. | 384,326 | $97M | +2,558 | +0.7% | 47Q | SEC ↗ |
| 50 | Mitsubishi UFJ Asset Management Co., L | 358,823 | $91M | +24,410 | +7.3% | 69Q | SEC ↗ |
Recent Activity
New Positions (20)
| Holder | Shares | Value |
|---|---|---|
| NORGES BANK | 2,580,033 | $652M |
| Sixth Street Partners Management Co | 1,117,663 | $282M |
| PERCEPTIVE ADVISORS LLC | 276,173 | $70M |
| LORD, ABBETT & CO. LLC | 130,184 | $33M |
| ANTIPODES PARTNERS Ltd | 86,827 | $22M |
| Freestone Grove Partners LP | 83,853 | $21M |
| D. E. Shaw & Co., Inc. | 74,438 | $19M |
| FARALLON CAPITAL MANAGEMENT, L.L.C. | 71,000 | $18M |
| Atle Fund Management AB | 62,781 | $16M |
| PICTON MAHONEY ASSET MANAGEMENT | 46,536 | $12M |
| Polymer Capital Management (HK) LTD | 38,665 | $10M |
| Nykredit A/S | 37,134 | $9M |
| Zurich Insurance Group Ltd/FI | 35,169 | $9M |
| Verition Fund Management LLC | 30,914 | $8M |
| Curated Wealth Partners LLC | 26,338 | $7M |
| Mubadala Investment Co PJSC | 24,083 | $6M |
| Caption Management, LLC | 21,000 | $5M |
| IMC-Chicago, LLC | 20,649 | $5M |
| Jupiter Topco LLC | 19,831 | $5M |
| Fideuram Asset Management (Ireland) | 13,094 | $3M |
Sold Out (20)
| Holder | Prev Shares | Prev Value |
|---|---|---|
| HRT FINANCIAL LP | 384,265 | $97M |
| Jain Global LLC | 353,173 | $89M |
| Sofinnova Investments, Inc. | 229,521 | $58M |
| Qube Research & Technologies Ltd | 212,921 | $54M |
| Logos Global Management LP | 200,000 | $51M |
| Y-Intercept (Hong Kong) Ltd | 134,566 | $34M |
| SUVRETTA CAPITAL MANAGEMENT, LLC | 132,290 | $33M |
| BRAIDWELL LP | 115,700 | $29M |
| Defilade Capital Management, L.P. | 96,289 | $24M |
| MILLENNIUM MANAGEMENT LLC | 93,964 | $24M |
| Eversept Partners, LP | 77,944 | $20M |
| Brevan Howard Capital Management LP | 71,017 | $18M |
| Contrarius Group Holdings Ltd | 64,952 | $16M |
| GLENVIEW CAPITAL MANAGEMENT, LLC | 57,019 | $14M |
| Weiss Asset Management LP | 55,560 | $14M |
| Schonfeld Strategic Advisors LLC | 48,828 | $12M |
| ARROWSTREET CAPITAL, LIMITED PARTNE | 45,349 | $11M |
| BRIDGER MANAGEMENT, LLC | 36,065 | $9M |
| Parkman Healthcare Partners LLC | 35,425 | $9M |
| TANG CAPITAL MANAGEMENT LLC | 35,000 | $9M |
Biggest Increases (20)
| Holder | Added | Change % | Total Shares |
|---|---|---|---|
| FMR LLC | +5,409,698 | +42.2% | 18,217,239 |
| Amundi | +726,004 | +91.8% | 1,516,831 |
| UBS Group AG | +506,700 | +96.8% | 1,030,150 |
| Pacer Advisors, Inc. | +462,573 | +70.0% | 1,122,981 |
| PRIMECAP MANAGEMENT CO/CA | +396,999 | +2.7% | 15,154,606 |
| CITADEL ADVISORS LLC | +280,263 | +203.0% | 418,356 |
| MORGAN STANLEY | +240,331 | +11.1% | 2,411,271 |
| CITIGROUP INC | +234,010 | +46.8% | 734,517 |
| VOYA INVESTMENT MANAGEMENT LLC | +192,221 | +352.3% | 246,782 |
| GOLDMAN SACHS GROUP INC | +179,296 | +17.1% | 1,230,390 |
| ROYAL BANK OF CANADA | +177,185 | +33.3% | 708,562 |
| STATE STREET CORP | +176,405 | +2.5% | 7,344,327 |
| WELLINGTON MANAGEMENT GROUP LLP | +155,828 | +5.3% | 3,117,469 |
| NISSAY ASSET MANAGEMENT CORP /JAPAN | +155,539 | +522.6% | 185,301 |
| JUPITER ASSET MANAGEMENT LTD | +152,916 | +2141.4% | 160,057 |
| Legal & General Group Plc | +143,457 | +10.6% | 1,493,289 |
| Alyeska Investment Group, L.P. | +127,324 | +15.8% | 932,374 |
| VANGUARD CAPITAL MANAGEMENT LLC | +113,700 | +1.2% | 9,651,117 |
| LSV ASSET MANAGEMENT | +110,310 | +33.1% | 444,049 |
| GEODE CAPITAL MANAGEMENT, LLC | +106,693 | +2.5% | 4,449,295 |
Biggest Decreases (20)
| Holder | Reduced | Change % | Total Shares |
|---|---|---|---|
| T. Rowe Price Investment Management | -1,047,116 | -90.2% | 113,873 |
| VAN ECK ASSOCIATES CORP | -981,752 | -90.9% | 98,109 |
| Point72 Asset Management, L.P. | -721,468 | -89.1% | 88,149 |
| Boston Partners | -436,649 | -25.7% | 1,263,429 |
| Balyasny Asset Management L.P. | -384,956 | -59.2% | 265,090 |
| BARCLAYS PLC | -304,317 | -55.2% | 247,157 |
| MARSHALL WACE, LLP | -217,284 | -94.5% | 12,595 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | -203,858 | -61.1% | 129,599 |
| JPMORGAN CHASE & CO | -192,869 | -9.6% | 1,823,140 |
| SG Americas Securities, LLC | -172,868 | -88.3% | 22,800 |
| DEUTSCHE BANK AG | -169,793 | -16.0% | 894,035 |
| ExodusPoint Capital Management, LP | -149,122 | -98.1% | 2,871 |
| RENAISSANCE TECHNOLOGIES LLC | -125,652 | -61.8% | 77,744 |
| Man Group plc | -122,523 | -38.4% | 196,222 |
| UBS AM, a distinct business unit of | -122,400 | -8.9% | 1,255,168 |
| ACADIAN ASSET MANAGEMENT LLC | -118,611 | -47.7% | 129,878 |
| THOMPSON SIEGEL & WALMSLEY LLC | -117,831 | -47.4% | 130,512 |
| Hudson Bay Capital Management LP | -111,367 | -55.3% | 90,000 |
| LMR Partners LLP | -111,265 | -95.8% | 4,866 |
| CANADA PENSION PLAN INVESTMENT BOAR | -101,336 | -88.2% | 13,602 |