Institutional Holders (2026 Q2)
347 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in PTCT. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | Tang Capital Management LLC | 5.56% | 1,500,000 | $122.4M |
| 2 | Rtw Investments, LP | 5.39% | 7,746,415 | $631.9M |
| 3 | Defilade Capital Management, L.P. | 4.74% | 433,699 | $35.4M |
| 4 | Parkman Healthcare Partners LLC | 3.64% | 435,691 | $35.5M |
| 5 | Sector Gamma As | 1.77% | 100,000 | $8.2M |
| 6 | Boxer Capital Management, LLC | 1.23% | 200,000 | $16.3M |
| 7 | Armistice Capital, LLC | 1.07% | 1,071,395 | $87.4M |
| 8 | Hood River Capital Management LLC | 1.03% | 1,738,613 | $141.8M |
| 9 | Blue Sparrow, LLC /DE | 0.83% | 1,050,700 | $85.7M |
| 10 | Driehaus Capital Management LLC | 0.68% | 1,440,107 | $117.5M |
| 11 | Armistice Capital, LLC | 0.66% | 660,000 | $53.8M |
| 12 | Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 0.66% | 36,873 | $3.0M |
| 13 | Dauntless Investment Group, LLC | 0.65% | 10,193 | $831K |
| 14 | Rock Springs Capital Management LP | 0.65% | 162,298 | $13.2M |
| 15 | Hussman Strategic Advisors, INC. | 0.59% | 31,500 | $2.6M |
| 16 | nVerses Capital, LLC | 0.56% | 4,494 | $367K |
| 17 | Phocas Financial Corp. | 0.52% | 46,170 | $3.8M |
| 18 | Westfield Capital Management Co LP | 0.52% | 1,956,156 | $159.6M |
| 19 | Sectoral Asset Management Inc | 0.43% | 7,470 | $609K |
| 20 | William Blair Investment Management, LLC | 0.42% | 1,722,688 | $140.5M |
| 21 | Capricorn Fund Managers Ltd | 0.41% | 63,900 | $5.2M |
| 22 | Flax Pond Capital, LLC | 0.32% | 6,000 | $409K |
| 23 | Virtus Investment Advisers, LLC | 0.29% | 15,476 | $1.3M |
| 24 | Jupiter Asset Management Ltd | 0.29% | 707,450 | $57.7M |
| 25 | Lgl Partners, LLC | 0.27% | 9,000 | $734K |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|