- Type / Class
- Equity / Common Stock
- Shares outstanding
- 147,079,094
- Total 13F shares
- 139,668,143
- Share change
- +8,248,959
- Total reported value
- $24,578,175,279
- Put/Call ratio
- 65%
- Price per share
- $175.99
- Number of holders
- 985
- Value change
- +$1,492,219,917
- Number of buys
- 454
- Number of sells
- 376
Quarterly Holders Quick Answers
What is CUSIP 09062X103?
CUSIP 09062X103 identifies BIIB - BIOGEN INC. - Common Stock in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
Related Filing Research
- Latest 13F filings for newly reported positions.
- Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
- Latest 10-Q/10-K reports for financial context tied to this issuer.
- Recent insider transactions for executive and insider activity.
- SEC investors directory and top value investors for manager drilldown.
- Back to full security ownership history.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
Recent filing periods for CUSIP 09062X103:
Top shareholders of BIIB - BIOGEN INC. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
|
Company |
12%
|
17,289,235
|
$2,421,876,038 | — | 30 Sep 2025 | |
| PRIMECAP MANAGEMENT CO/CA/ |
13D/G
13F
|
Company |
10%
|
14,954,697
|
$2,094,853,956 | $0 | 30 Sep 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
8.5%
from 13D/G
|
14,763,952
|
$2,068,134,447 | — | 30 Sep 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
6.4%
|
9,413,062
|
$1,656,604,787 | $0 | 31 Dec 2025 | |
| STATE STREET CORP |
13D/G
13F
|
STATE STREET CORPORATION · Company |
5%
|
7,321,168
|
$1,025,549,213 | $0 | 30 Sep 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
2.9%
|
4,246,504
|
$594,850,279 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.8%
|
4,068,781
|
$567,740,241 | — | 30 Sep 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
2.6%
|
3,872,901
|
$542,516,040 | — | 30 Sep 2025 | |
| Invesco Ltd. |
13F
|
Company |
1.6%
|
2,418,127
|
$338,731,160 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.5%
|
2,251,535
|
$315,395,300 | — | 30 Sep 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.2%
|
1,783,581
|
$248,809,475 | — | 30 Sep 2025 | |
| Legal & General Group Plc |
13F
|
Company |
1.1%
|
1,593,399
|
$223,203,335 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1%
|
1,499,332
|
$210,026,427 | — | 30 Sep 2025 | |
| Pacer Advisors, Inc. |
13F
|
Company |
0.99%
|
1,451,249
|
$203,290,960 | — | 30 Sep 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.98%
|
1,439,208
|
$201,604,257 | — | 30 Sep 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.92%
|
1,359,424
|
$190,428,112 | — | 30 Sep 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.86%
|
1,268,350
|
$177,670,522 | — | 30 Sep 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
0.84%
|
1,234,149
|
$172,879,592 | — | 30 Sep 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.84%
|
1,231,302
|
$172,480,783 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.83%
|
1,220,018
|
$170,900,120 | — | 30 Sep 2025 | |
| Alexander J. Denner |
3/4/5
|
Director |
—
class O/S missing
|
658,099
|
$163,208,552 | — | 15 Jun 2022 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.76%
|
1,123,349
|
$157,358,728 | — | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.76%
|
1,111,190
|
$155,655,495 | — | 30 Sep 2025 | |
| T. Rowe Price Investment Management, Inc. |
13F
|
Company |
0.73%
|
1,067,482
|
$149,533,000 | — | 30 Sep 2025 | |
| VAN ECK ASSOCIATES CORP |
13F
|
Company |
0.73%
|
1,066,931
|
$149,456,000 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.72%
|
1,063,586
|
$148,987,148 | — | 30 Sep 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.66%
|
965,457
|
$135,242,000 | — | 30 Sep 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.66%
|
964,406
|
$135,093,992 | — | 30 Sep 2025 | |
| Man Group plc |
13F
|
Company |
0.62%
|
918,025
|
$128,596,942 | — | 30 Sep 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.6%
|
887,661
|
$124,343,553 | — | 30 Sep 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.6%
|
884,701
|
$123,928,907 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.59%
|
873,094
|
$122,293,283 | — | 30 Sep 2025 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
0.57%
|
845,277
|
$118,406,402 | — | 30 Sep 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.57%
|
840,557
|
$117,745,157 | — | 30 Sep 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
0.52%
|
770,855
|
$107,698,024 | — | 30 Sep 2025 | |
| AustralianSuper Pty Ltd |
13F
|
Company |
0.51%
|
751,386
|
$105,254,151 | — | 30 Sep 2025 | |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13F
|
Company |
0.5%
|
729,316
|
$102,162,586 | — | 30 Sep 2025 | |
| Rakuten Investment Management, Inc. |
13F
|
Company |
0.14%
|
198,572
|
$99,137,071 | — | 30 Sep 2025 | |
| Employees Provident Fund Board |
13F
|
Company |
0.48%
|
704,196
|
$98,643,775 | — | 30 Sep 2025 | |
| Amundi |
13F
|
Individual |
0.42%
|
618,309
|
$95,250,502 | — | 30 Sep 2025 | |
| Robeco Institutional Asset Management B.V. |
13F
|
Company |
0.46%
|
671,054
|
$94,001,243 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.43%
|
638,965
|
$89,506,219 | — | 30 Sep 2025 | |
| CAISSE DE DEPOT ET PLACEMENT DU QUEBEC |
13F
|
Company |
0.39%
|
569,253
|
$79,740,963 | — | 30 Sep 2025 | |
| CAUSEWAY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.39%
|
567,518
|
$79,497,885 | — | 30 Sep 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.34%
|
498,120
|
$69,777,000 | — | 30 Sep 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.32%
|
477,924
|
$66,947,594 | — | 30 Sep 2025 | |
| HSBC HOLDINGS PLC |
13F
|
Company |
0.3%
|
447,518
|
$62,594,417 | — | 30 Sep 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.3%
|
441,082
|
$61,786,767 | — | 30 Sep 2025 | |
| PRUDENTIAL FINANCIAL INC |
13F
|
Company |
0.3%
|
439,109
|
$61,510,389 | — | 30 Sep 2025 | |
| Swiss National Bank |
13F
|
Company |
0.29%
|
422,400
|
$59,169,792 | — | 30 Sep 2025 |
Institutional Holders of BIOGEN INC. - Common Stock (BIIB) as of Q4 2025
As of 31 Dec 2025,
BIOGEN INC. - Common Stock (BIIB) was held by
985 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
139,668,143 shares.
The largest 10 holders included
VANGUARD GROUP INC, BlackRock, Inc., PRIMECAP MANAGEMENT CO/CA/, FMR LLC, STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, WELLINGTON MANAGEMENT GROUP LLP, Point72 Asset Management, L.P., NORGES BANK, and MORGAN STANLEY.
This page lists
985
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
894
Q4 2025 holders
985
Holder diff
91
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.