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/PTGX/capital-change-brief"
Use Arkolith's capital_change_brief for PTGX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $1.0B | 9.8M | ▲+0.7% Added · +63K sh | Q1 2026 | |
| 2 | FARALLON CAPITAL MANAGEMENT LLC | $669.2M | 6.3M | ▲+3.3% Added · +205K sh | Q1 2026 | |
| 3 | UBS Group AG | $545.7M | 5.2M | ▲+87% Added · +2.4M sh | Q1 2026 | |
| 4 | RTW INVESTMENTS, LP | $533.2M | 5.1M | —Held | Q1 2026 | |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $366.9M | 3.5M | ▲New +3.5M sh | Q1 2026 | |
| 6 | STATE STREET CORP | $328.5M | 3.1M | ▼−2.6% Reduced · −83K sh | Q1 2026 | |
| 7 | JANUS HENDERSON GROUP PLC | $304.9M | 2.9M | ▲+9.1% Added · +242K sh | Q1 2026 | |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | $295.7M | 2.8M | ▲New +2.8M sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $176.0M | 1.7M | ▲+15% Added · +216K sh | Q1 2026 | |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | $175.5M | 1.7M | ▲+19% Added · +265K sh | Q1 2026 | |
| 11 | CITADEL ADVISORS LLC | $163.6M | 1.6M | ▲+38% Added · +425K sh | Q1 2026 | |
| 12 | Woodline Partners LP | $149.1M | 1.4M | ▲+0.4% Added · +5K sh | Q1 2026 | |
| 13 | BANK OF AMERICA CORP /DE/ | $136.5M | 1.3M | ▲+49% Added · +428K sh | Q1 2026 | |
| 14 | PERCEPTIVE ADVISORS LLC | $129.7M | 1.2M | ▼−8.8% Reduced · −120K sh | Q1 2026 | |
| 15 | JENNISON ASSOCIATES LLC | $113.0M | 1.1M | ▲+224% Added · +741K sh | Q1 2026 | |
| 16 | MORGAN STANLEY | $107.3M | 1.0M | ▲+16% Added · +139K sh | Q1 2026 | |
| 17 | ADAR1 Capital Management, LLC | $104.8M | 994K | ▼−5.2% Reduced · −55K sh | Q1 2026 | |
| 18 | Hood River Capital Management LLC | $87.4M | 829K | ▲New +829K sh | Q1 2026 | |
| 19 | GOLDMAN SACHS GROUP INC | $82.1M | 779K | ▼−19% Reduced · −182K sh | Q1 2026 | |
| 20 | FMR LLC | $69.8M | 662K | ▲+23% Added · +122K sh | Q1 2026 | |
| 21 | MARSHALL WACE, LLP | $66.2M | 628K | ▼−39% Reduced · −397K sh | Q1 2026 | |
| 22 | Clearbridge Investments, LLC | $65.5M | 622K | ▲+27% Added · +132K sh | Q1 2026 | |
| 23 | Alyeska Investment Group, L.P. | $62.5M | 593K | ▲+197% Added · +394K sh | Q1 2026 | |
| 24 | NORTHERN TRUST CORP | $62.0M | 588K | ▲+2.2% Added · +13K sh | Q1 2026 | |
| 25 | Pictet Asset Management Holding SA | $61.2M | 581K | ▲+9.7% Added · +51K 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 23, 2026 | Waddill William D. | Director | Option exercise (M) | 9K | $149K |
| Jun 23, 2026 | Waddill William D. | Director | Sell (S) | 9K | $1.1M |
| Jun 23, 2026 | Waddill William D. | Director | Option exercise (M) | 9K | $0 |
| Jun 10, 2026 | Waddill William D. | Director | Option exercise (M) | 3K | $35K |
| Jun 10, 2026 | Waddill William D. | Director | Option exercise (M) | 6K | $99K |
| Jun 10, 2026 | Waddill William D. | Director | Sell (S) | 9K | $969K |
| Jun 10, 2026 | Waddill William D. | Director | Option exercise (M) | 3K | $0 |
| Jun 10, 2026 | Waddill William D. | Director | Option exercise (M) | 6K | $0 |
| May 29, 2026 | Waddill William D. | Director | Option exercise (M) | 9K | $106K |
| May 29, 2026 | Waddill William D. | Director | Sell (S) | 9K | $897K |
| May 29, 2026 | Waddill William D. | Director | Option exercise (M) | 9K | $0 |
| May 12, 2026 | PATEL DINESH V PH D | President and CEO, Director | Option exercise (M) | 75K | $1.6M |
| Company | Co-held by | Combined value |
|---|---|---|
| ELI LILLY & COLLY | 105 funds | $14.1B |
| BOSTON SCIENTIFIC CORPBSX | 104 funds | $2.9B |
| AMAZON.COM INCAMZN | 103 funds | $41.3B |
| ALPHABET INC-CL AGOOGL | 103 funds | $33.8B |
| NVIDIA CORPNVDA | 102 funds | $75.8B |
| INTUITIVE SURGICAL INCISRG | 102 funds | $4.8B |
| MICROSOFT CORPMSFT | 101 funds | $50.7B |
| META PLATFORMS INC-CLASS AMETA | 101 funds | $22.8B |
| APPLE INCAAPL | 100 funds | $59.4B |
| BROADCOM INCAVGO | 100 funds | $28.0B |
| MICRON TECHNOLOGY INCMU | 100 funds | $10.9B |
| UNITEDHEALTH GROUP INCUNH | 100 funds | $4.6B |
Ranked by how many of PTGX's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PTGX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.