1 hedge funds and family offices disclose a BIIB position in their latest SEC 13F filing — combined $5.4M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Mark Hillman | Hillman Capital Management Inc | 30,516 | $5.4M | 3.38% | 2025-12-31 |
As of the latest 13F window, 1 tracked superinvestors hold BIIB. The largest disclosed position is Mark Hillman at $5.4M (3.4% of portfolio).
13F filings are due 45 days after each quarter end and capture long-equity positions held by U.S. institutional managers with $100M+ AUM. Use this page to see exactly who is buying BIIB, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
1 hedge funds and family offices disclose a BIIB position in their latest SEC 13F filing — combined $5.4M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Mark Hillman | Hillman Capital Management Inc | 30,516 | $5.4M | 3.38% | 2025-12-31 |
As of the latest 13F window, 1 tracked superinvestors hold BIIB. The largest disclosed position is Mark Hillman at $5.4M (3.4% of portfolio).
13F filings are due 45 days after each quarter end and capture long-equity positions held by U.S. institutional managers with $100M+ AUM. Use this page to see exactly who is buying BIIB, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
