Ionis Pharmaceuticals Inc
IONS · US
Ionis Pharmaceuticals Inc is held by 2 of the 24 tracked investors in their latest 13F filings. The largest position is ARK Investment Management's at $23.8M, 0.15% of that portfolio. Versus the prior quarter, 1 added, 1 trimmed and 0 bought new.
Big investors holding this stock
Latest 13F of the 24 tracked investors. Common shares only.
| Investor | Value ($) | vs prior quarter |
|---|---|---|
| ARK Investment Management weight 0.15% · Q2 2026 |
23.8M | ▲ 4% |
| Norges Bank weight 0.00% · Q2 2026 |
9.1M | ▼ 64% |
Questions
Which big investors own Ionis Pharmaceuticals Inc?
ARK Investment Management ($23.8M), Norges Bank ($9.1M), per their latest 13F filings.
Does Warren Buffett own Ionis Pharmaceuticals Inc?
Berkshire Hathaway did not report it in its latest 13F.
Does Korea's National Pension Service own Ionis Pharmaceuticals Inc?
Not in its latest 13F.
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.