327 tracked 13F filers disclose a position in PTCT as of the latest SEC 13F filings, a combined $6.6B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $882.2M | 12.9M | ▲+1.3% Added · +170K sh | Q1 2026 | |
| 2 | RTW INVESTMENTS, LP | $631.9M | 7.7M | —Held | Q2 2026 | |
| 3 | JANUS HENDERSON GROUP PLC | $490.0M | 7.2M | ▲+48% Added · +2.3M sh | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $327.3M | 4.8M | →First observed position No prior filed position | Q1 2026 | |
| 5 | STATE STREET CORP | $375.1M | 4.6M | ▲+5.8% Added · +252K sh | Q2 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $250.5M | 3.7M | →First observed position No prior filed position | Q1 2026 | |
| 7 | TORONTO DOMINION BANK | $206.2M | 3.0M | ▼−27% Reduced · −1.1M sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $180.1M | 2.2M | ▼−0.1% Reduced · −3K sh | Q2 2026 | |
| 9 | ARMISTICE CAPITAL, LLC | $141.3M | 2.1M | ▼−26% Reduced · −727K sh | Q1 2026 | |
| 10 | WESTFIELD CAPITAL MANAGEMENT CO LP | $159.6M | 2.0M | ▲New +2.0M sh | Q2 2026 | |
| 11 | BANK OF AMERICA CORP /DE/ | $128.6M | 1.9M | ▲+32% Added · +455K sh | Q1 2026 | |
| 12 | Hood River Capital Management LLC | $141.8M | 1.7M | ▲+4.4% Added · +74K sh | Q2 2026 | |
| 13 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $140.5M | 1.7M | ▲New +1.7M sh | Q2 2026 | |
| 14 | D. E. Shaw & Co., Inc. | $111.8M | 1.6M | ▼−6.0% Reduced · −105K sh | Q1 2026 | |
| 15 | FMR LLC | $104.1M | 1.5M | ▼−9.1% Reduced · −153K sh | Q1 2026 | |
| 16 | TANG CAPITAL MANAGEMENT LLC | $102.2M | 1.5M | —Held | Q1 2026 | |
| 17 | UBS Group AG | $93.0M | 1.4M | ▲+41% Added · +400K sh | Q1 2026 | |
| 18 | Jefferies Financial Group Inc. | $110.7M | 1.4M | ▲+0.2% Added · +3K sh | Q2 2026 | |
| 19 | Pictet Asset Management Holding SA | $80.1M | 1.2M | ▲+21% Added · +205K sh | Q1 2026 | |
| 20 | FULLER & THALER ASSET MANAGEMENT, INC. | $94.4M | 1.2M | ▲New +1.2M sh | Q2 2026 | |
| 21 | FRANKLIN RESOURCES INC | $76.4M | 1.1M | ▼−13% Reduced · −165K sh | Q1 2026 | |
| 22 | Blue Sparrow, LLC /DE | $85.7M | 1.1M | ▲+451% Added · +860K sh | Q2 2026 | |
| 23 | BNP PARIBAS FINANCIAL MARKETS | $62.7M | 920K | ▲+11% Added · +92K sh | Q1 2026 | |
| 24 | Palo Alto Investors LP | $75.0M | 919K | ▼−0.3% Reduced · −3K sh | Q2 2026 | |
| 25 | DIMENSIONAL FUND ADVISORS LP | $60.7M | 891K | ▲+42% Added · +264K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 10 funds opened a new position in PTCT and 29 added to an existing one, while 16 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 182 funds | $258.4B |
| ALPHABET INC-CL AGOOGL | 182 funds | $166.8B |
| NVIDIA CORPNVDA | 180 funds | $377.5B |
| AMAZON.COM INCAMZN | 180 funds | $193.2B |
| ELI LILLY & COLLY | 179 funds | $73.5B |
| APPLE INCAAPL | 178 funds | $280.0B |
| META PLATFORMS INC-CLASS AMETA | 178 funds | $107.9B |
| BROADCOM INCAVGO | 174 funds | $147.4B |
| LAM RESEARCH CORPLRCX | 174 funds | $34.2B |
| ALPHABET INC-CL CGOOG | 172 funds | $111.4B |
| MICRON TECHNOLOGY INCMU | 172 funds | $38.9B |
| ADVANCED MICRO DEVICESAMD | 171 funds | $34.0B |
Ranked by how many of PTCT's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 27, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 610 | $44K |
| Aug 27, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 12K | $851K |
| Aug 26, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 6K | $412K |
| Aug 26, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 7K | $500K |
| Aug 20, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 691 | $50K |
| Aug 20, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 2K | $172K |
| Aug 20, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 9K | $667K |
| Aug 19, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 7K | $528K |
| Aug 19, 2026 | SCHMERTZLER MICHAEL | Director | Sell (S) | 5K | $389K |
| Aug 17, 2026 | Boulding Mark Elliott | EXEC. VP AND CLO | Sell (S) | 969 | $71K |
| Aug 17, 2026 | Boulding Mark Elliott | EXEC. VP AND CLO | Sell (S) | 2K | $133K |
| Aug 4, 2026 | Klein Matthew B. | CHIEF EXECUTIVE OFFICER, Director | Sell (S) | 10K | $706K |
| Class | 13F holders | Value held |
|---|---|---|
| PTCTthis pagecs | 327 funds | $6.6B |
| PTCT 1.5 09/15/26SDBCV | 10 funds | $209.0M |
| 69366JAE1CONVERTIBLE BOND | 1 funds | $7.3M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for PTCT
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/PTCT/capital-change-brief"
Use Arkolith's capital_change_brief for PTCT. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PTCT. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.