Form 13-F position report

BIOGEN INC

Reported by Old North State Wealth Management LLC

Company profile Manager portfolio Source filing
BIIB CUSIP 09062X103 Manager CIK 0002041262
Latest reported change

Reported 22,269 shares, up 2,045 (10.1%) from the prior quarter.

Reported value 22.8%; share count 10.1% vs. the prior quarter.

Added
% of reported 13F value 1.46% This manager · Q3 2025
Shares 22,269 Quarter-end amount reported
Reported value $3,119,532 Fair value at quarter end
Consecutive quarters held 16 Through Q3 2025

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Manager history

Quarterly position history

How this manager's reported quarter-end position changed over time.

20 quarters
Quarter Activity Shares Change % of reported 13F Reported value Filed
Q3 2026 Reduced 24,136 -584 (-2.4%) 2.26% $5,451,986 2026-10-22
Q2 2026 Added 24,720 +125 (0.5%) 2.28% $5,341,146 2026-07-17
Q1 2026 Added 24,595 +786 (3.3%) 2.09% $4,509,123 2026-04-17
Q4 2025 Added 23,809 +1,540 (6.9%) 1.97% $4,190,266 2026-01-23
Q3 2025 Added 22,269 +2,045 (10.1%) 1.46% $3,119,532 2025-10-17
Q2 2025 Added 20,224 +320 (1.6%) 1.32% $2,540,021 2025-07-16
Q1 2025 Added 19,904 +4,437 (28.7%) 1.52% $2,723,753 2025-04-24
Q4 2024 Added 15,467 +1,934 (14.3%) 1.33% $2,365,313 2025-01-27
Q3 2024 Added 13,533 +100 (0.7%) 1.47% $2,623,364 2024-10-29
Q2 2024 Added 13,433 +1,099 (8.9%) 2.05% $3,114,191 2024-10-29
Q1 2024 Added 12,334 +1,130 (10.1%) 1.74% $2,659,720 2024-10-29
Q4 2023 Added 11,204 +870 (8.4%) 2.14% $2,899,430 2024-10-28
Q3 2023 Added 10,334 +60 (0.6%) 2.33% $2,656,107 2024-10-28
Q2 2023 Added 10,274 +551 (5.7%) 2.56% $2,926,738 2024-10-28
Q1 2023 Added 9,723 +276 (2.9%) 2.53% $2,703,470 2024-10-28
Q4 2022 Reduced 9,447 -96 (-1.0%) 2.63% $2,616,245 2024-10-25
Q3 2022 Reduced 9,543 -308 (-3.1%) 2.94% $2,548,249 2024-10-25
Q2 2022 Added 9,851 +1,712 (21.0%) 2.29% $2,009,218 2024-10-25
Q1 2022 Added 8,139 +890 (12.3%) 1.71% $1,714,284 2024-10-25
Q4 2021 New 7,249 +7,249 (0.0%) 1.75% $1,739,420 2024-10-24
Institutional context

Who else reported the position

986 managers reported BIOGEN INC for Q3 2025.

Manager Activity Shares Change % of reported 13F Reported value Tenure
VANGUARD GROUP INC Reduced 17,289,235 -1,416 0.04% $2,421,876,038 50 qtrs
PRIMECAP MANAGEMENT CO CA Reduced 14,954,697 -847,425 1.6% $2,094,853,953 50 qtrs
BlackRock Inc Added 14,763,952 +1,208,486 0.04% $2,068,134,447 5 qtrs
STATE STREET CORPORATION Reduced 7,319,749 -149,058 0.04% $1,025,350,440 50 qtrs
WELLINGTON MANAGEMENT GROUP LLP Reduced 4,246,504 -551,916 0.1% $594,850,279 50 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 4,068,781 +150,631 0.04% $567,740,241 50 qtrs
Point72 Asset Management L P Added 3,872,901 +41,174 0.91% $542,516,040 3 qtrs
Invesco Ltd Added 2,418,127 +98,001 0.05% $338,731,160 50 qtrs
MORGAN STANLEY Added 2,251,535 +295,325 0.02% $315,395,300 50 qtrs
AQR CAPITAL MANAGEMENT LLC Added 1,783,581 +418,776 0.16% $248,809,475 50 qtrs
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Filing details and methodology As reported
Report period
September 30, 2025
Filed
October 17, 2025
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
0
Shared
0
None
22,269

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.