Biogen Inc
BIIB · US
Biogen Inc is held by 3 of the 24 tracked investors in their latest 13F filings. The largest position is Norges Bank's at $557M, 0.06% of that portfolio. Versus the prior quarter, 1 added, 2 trimmed and 0 bought new.
Big investors holding this stock
Latest 13F of the 24 tracked investors. Common shares only.
| Investor | Value ($) | vs prior quarter |
|---|---|---|
| Norges Bank weight 0.06% · Q2 2026 |
557M | ▼ 2% |
| National Pension Service (Korea) weight 0.06% · Q2 2026 |
87.7M | ▲ 1% |
| Korea Investment Corporation weight 0.01% · Q2 2026 |
7.3M | ▼ 55% |
Questions
Which big investors own Biogen Inc?
Norges Bank ($557M), National Pension Service (Korea) ($87.7M), Korea Investment Corporation ($7.3M), per their latest 13F filings.
Does Warren Buffett own Biogen Inc?
Berkshire Hathaway did not report it in its latest 13F.
Does Korea's National Pension Service own Biogen Inc?
Yes, $87.7M as of 2026-06-30 (0.06% of its US holdings).
Restated and computed from SEC (13F, 13D/G, Form 4) and DART filings and NPS public data. Filings describe a past date and may differ from current holdings (13F: quarter end, up to 45 days later). Not investment advice.
Sources: SEC EDGAR, DART, data.go.kr (NPS), OpenFIGI. See Methodology for how figures are computed.