2 hedge funds and family offices disclose a SION position in their latest SEC 13F filing — combined $129.4M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Viking Global | Viking Global Investors LP | 3,195,181 | $128.1M | 0.36% | 2026-03-31 |
| 2 | Polen Capital | Polen Capital Management LLC | 31,258 | $1.3M | 0.01% | 2025-12-31 |
As of the latest 13F window, 2 tracked superinvestors hold SION. The largest disclosed position is Viking Global at $128.1M (0.4% 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 SION, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
2 hedge funds and family offices disclose a SION position in their latest SEC 13F filing — combined $129.4M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Viking Global | Viking Global Investors LP | 3,195,181 | $128.1M | 0.36% | 2026-03-31 |
| 2 | Polen Capital | Polen Capital Management LLC | 31,258 | $1.3M | 0.01% | 2025-12-31 |
As of the latest 13F window, 2 tracked superinvestors hold SION. The largest disclosed position is Viking Global at $128.1M (0.4% 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 SION, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
