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Biogen Inc. (BIIB)

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150.03 -5.30 (-3.41%)
At close: December 13 at 4:00:01 PM EST
150.00 -0.03 (-0.02%)
After hours: December 13 at 7:59:52 PM EST

Major Holders

Breakdown
0.15% % of Shares Held by All Insider
93.41% % of Shares Held by Institutions
93.56% % of Float Held by Institutions
1,373 Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
Vanguard Group Inc 16.68M Sep 30, 2024 11.45% 2,502,276,384
Primecap Management Company 16.32M Sep 30, 2024 11.20% 2,447,751,282
Blackrock Inc. 15.35M Sep 30, 2024 10.53% 2,302,516,542
State Street Corporation 7.34M Sep 30, 2024 5.04% 1,101,964,339
Wellington Management Group, LLP 5.13M Sep 30, 2024 3.52% 769,832,879
JP Morgan Chase & Company 5.1M Sep 30, 2024 3.50% 765,523,417
T. Rowe Price Investment Management, Inc. 4.26M Sep 30, 2024 2.92% 638,570,583
Geode Capital Management, LLC 3.61M Sep 30, 2024 2.48% 542,061,386
Norges Bank Investment Management 2.08M Jun 30, 2024 1.43% 311,874,109
Price (T.Rowe) Associates Inc 1.91M Sep 30, 2024 1.31% 286,939,274

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
Vanguard/Primecap Fund 9.18M Sep 30, 2024 6.30% 1,377,245,532
Vanguard Total Stock Market Index Fund 4.62M Sep 30, 2024 3.17% 693,334,383
Vanguard Specialized-Health Care Fund 4.56M Jul 31, 2024 3.13% 683,904,698
Vanguard 500 Index Fund 3.81M Sep 30, 2024 2.62% 572,336,539
Vanguard Mid-Cap Index Fund 3.08M Sep 30, 2024 2.12% 462,745,926
Invesco ETF Tr-Invesco QQQ Tr, Series 1 ETF 2.83M Sep 30, 2024 1.94% 424,413,412
Vanguard Horizon Fund-Capital Opportunity Fund 2.35M Sep 30, 2024 1.61% 352,547,542
Fidelity 500 Index Fund 1.79M Oct 31, 2024 1.23% 268,207,878
SPDR S&P 500 ETF Trust 1.77M Sep 30, 2024 1.21% 265,435,624
iShares Core S&P 500 ETF 1.58M Sep 30, 2024 1.09% 237,794,847

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