Supernus Pharmaceuticals, Inc. (SUPN) ownership: Millenium Management LLC and its affiliates 14% · institutions 102% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. 5 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 8797254.00 | $454.73M | 15.2% | 2026-03-31 |
| Vanguard | 6173277.00 | $319.10M | 10.6% | 2026-03-31 |
| Millennium Management | 3315973.00 | $171.40M | 5.7% | 2026-03-31 |
| Dimensional Fund Advisors | 2307030.00 | $119.24M | 4.0% | 2026-03-31 |
| State Street | 2288127.00 | $118.27M | 3.9% | 2026-03-31 |
| Nomura | 2037202.00 | $105.30M | 3.5% | 2026-03-31 |
| Armistice Capital, LLC | 1895347.00 | $97.97M | 3.3% | 2026-03-31 |
| Renaissance Technologies | 1705222.00 | $88.14M | 2.9% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 | |
| Sell | null | 2026-08-12 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.