Companies / PTC Therapeutics Inc
PTC Therapeutics Inc
Insider flow · last 90 daysNet sells $8.78M
Financials · FY2025
Ownership
83.5M shares outstanding · as of Jul 29, 2026
Ownership
| Insiders | 1.43% | 1,191,633 |
| 10%+ / strategic | 20.97% | 17,500,118 |
| Institutions | 107.02% | 89,321,745 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 17
View all →| Insider | % of shares | Shares |
|---|---|---|
Klein Matthew B.CEOCHIEF EXECUTIVE OFFICER · Director | 0.47% | 393,998 |
Schmertzler MichaelDirector | 0.20% | 163,266 |
Boulding Mark ElliottEXEC. VP AND CLO | 0.13% | 105,272 |
Gravier PierreCHIEF FINANCIAL OFFICER | 0.10% | 87,318 |
Golden Lee ScottEVP & CHIEF MEDICAL OFFICER | 0.09% | 79,115 |
Pauwels EricCHIEF BUSINESS OFFICER | 0.09% | 73,411 |
Utter Christine MarieSVP, CHIEF ACCOUNTING OFFICER | 0.08% | 70,199 |
Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | 0.08% | 62,874 |
Steele Glenn Jr Md PhdDirector | 0.03% | 22,500 |
Zeldis Jerome BDirector | 0.03% | 22,500 |
Institutional holders 359
View all →| Holder | Value | % of shares |
|---|---|---|
| $1.14B | 16.73% | |
| $668.69M | 10.55% | |
| $588.42M | 9.28% | |
| $490.00M | 8.62% | |
| $375.14M | 5.51% | |
| $314.34M | 4.96% | |
| $293.77M | 4.63% | |
| $212.83M | 3.36% | |
| $150.59M | 2.65% | |
| $127.71M | 2.01% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Janus Henderson Group PLC 13F manager | Add | Common stock | $159.54M | +2.3M +48.28% | 7,193,433 8.62% of shares | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $96.70M | +1.2M +9.28% | 13,964,554 16.73% of shares | high |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $32.04M | +393K +9.34% | 4,598,952 5.51% of shares | medium |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | New | Common stock | $31.38M | +461K | 460,564 0.55% of shares | medium |
| Q1 2026 as of | Jupiter Asset Management Ltd 13F manager | Add | Common stock | $23.87M | +350K +96.99% | 711,457 0.85% of shares | medium |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Trim | Common stock | $-20.08M | -295K -72.53% | 111,632 0.13% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Add | Common stock | $14.50M | +213K +85.93% | 460,638 0.55% of shares | medium |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $13.21M | +194K +9.62% | 2,209,954 2.65% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| Wellington Management Group LLP | Passive13G/A | — |
| State Street Corporation | Passive13G | — |
| Toronto Dominion Bank | Passive13G | — |
| Janus Henderson Group PLC | Passive13G | — |
| Toronto Dominion Bank | Passive13G/A | — |
| Janus Henderson Group PLC | Passive13G/A | — |
| Vanguard Portfolio Management | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| PTCT | — | 69366J200 |