PTC Therapeutics, Inc. (PTCT) ownership: Top institutional holder: BlackRock, Inc. ($882.20M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 12948717.00 | $882.20M | 2026-03-31 |
| VANGUARD GROUP INC | 8803203.00 | $668.69M | 2025-12-31 |
| RTW INVESTMENTS, LP | 7746415.00 | $527.76M | 2026-03-31 |
| JANUS HENDERSON GROUP PLC | 7193433.00 | $490.00M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4804594.00 | $327.34M | 2026-03-31 |
| STATE STREET CORP | 4346519.00 | $296.13M | 2026-03-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 3942610.00 | $268.61M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3676256.00 | $250.46M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-14 |
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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.