Who owns PTC THERAPEUTICS, INC.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of PTCT from SEC Form 13F filings across 382 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 382 institutions disclosed 100.5M shares of PTC THERAPEUTICS, INC. worth $8.20B — about 121.1% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
382
13F holders
$8.20B
value, 2026 filers
121.1%
of shares outstanding (100.5M sh)
79
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of PTCT's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 14.0M | $1.14B | 0.0% | 16.8% | +7.8% |
| 2 | RTW INVESTMENTS, LP | 7.7M | $631.9M | 5.4% | 9.3% | 0.0% |
| 3 | Jupiter Topco LLCNEW | 7.2M | $590.2M | 0.2% | 8.7% | new |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.9M | $402.0M | 0.0% | 5.9% | +2.6% |
| 5 | STATE STREET CORP | 4.6M | $375.1M | 0.0% | 5.5% | +5.8% |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | 4.1M | $336.7M | 0.1% | 5% | +4.7% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 3.7M | $305.0M | 0.0% | 4.5% | +1.7% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $180.1M | 0.0% | 2.7% | -0.1% |
| 9 | TORONTO DOMINION BANK | 2.2M | $176.7M | 0.2% | 2.6% | -28.4% |
| 10 | WESTFIELD CAPITAL MANAGEMENT CO LPNEW | 2.0M | $159.6M | 0.5% | 2.4% | new |
| 11 | Hood River Capital Management LLC | 1.7M | $141.8M | 1.0% | 2.1% | +4.4% |
| 12 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCNEW | 1.7M | $140.5M | 0.4% | 2.1% | new |
| 13 | D. E. Shaw & Co., Inc. | 1.5M | $126.3M | 0.1% | 1.9% | -5.6% |
| 14 | TANG CAPITAL MANAGEMENT LLC | 1.5M | $122.4M | 5.6% | 1.8% | 0.0% |
| 15 | BANK OF AMERICA CORP /DE/ | 1.5M | $118.5M | 0.0% | 1.7% | -23.0% |
| 16 | Driehaus Capital Management LLC | 1.4M | $117.5M | 0.7% | 1.7% | +41.8% |
| 17 | FMR LLC | 1.4M | $114.1M | 0.0% | 1.7% | -8.5% |
| 18 | Jefferies Financial Group Inc. | 1.4M | $110.7M | 0.7% | 1.6% | +0.2% |
| 19 | FULLER & THALER ASSET MANAGEMENT, INC.NEW | 1.2M | $94.4M | 0.3% | 1.4% | new |
| 20 | Pictet Asset Management Holding SA | 1.1M | $93.6M | 0.1% | 1.4% | -3.0% |
| 21 | PRICE T ROWE ASSOCIATES INC /MD/ | 1.1M | $90.9M | 0.0% | 1.3% | +134.6% |
| 22 | MORGAN STANLEY | 1.1M | $90.0M | 0.0% | 1.3% | +63.7% |
| 23 | ARMISTICE CAPITAL, LLC | 1.1M | $87.4M | 1.1% | 1.3% | -48.4% |
| 24 | Blue Sparrow, LLC /DE | 1.1M | $85.7M | 0.8% | 1.3% | +451.3% |
| 25 | FRANKLIN RESOURCES INC | 1.0M | $83.8M | 0.0% | 1.2% | -8.4% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.