The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query PTN owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/PTN"
Use Arkolith to show who owns PTN, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | JANUS HENDERSON GROUP PLC | $2.4M | 140K | —Held | Q1 2026 | |
| 2 | Logos Global Management LP | $2.4M | 140K | —Held | Q1 2026 | |
| 3 | RA CAPITAL MANAGEMENT, L.P. | $1.2M | 70K | —Held | Q1 2026 | |
| 4 | PERCEPTIVE ADVISORS LLC | $1.1M | 62K | ▼−12% Reduced · −8K sh | Q1 2026 | |
| 5 | BALYASNY ASSET MANAGEMENT L.P. | $717K | 41K | ▲New +41K sh | Q1 2026 | |
| 6 | MORGAN STANLEY | $475K | 27K | ▼~0% Reduced · −9 sh | Q1 2026 | |
| 7 | VANGUARD GROUP INC | $446K | 29K | ▲New +29K sh | Q4 2025 | |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | $331K | 19K | ▲New +19K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $322K | 19K | ▲+4.5% Added · +796 sh | Q1 2026 | |
| 10 | LPL Financial LLC | $219K | 13K | ▲New +13K sh | Q1 2026 | |
| 11 | CITADEL ADVISORS LLC | $193K | 11K | ▲New +11K sh | Q1 2026 | |
| 12 | VANGUARD FIDUCIARY TRUST CO | $153K | 9K | ▲New +9K sh | Q1 2026 | |
| 13 | UBS Group AG | $58K | 3K | ▲+298% Added · +2K sh | Q1 2026 | |
| 14 | Tower Research Capital LLC (TRC) | $6K | 338 | ▲New +338 sh | Q1 2026 | |
| 15 | JONES FINANCIAL COMPANIES LLLP | $3K | 150 | ▲New +150 sh | Q1 2026 | |
| 16 | OSAIC HOLDINGS, INC. | $3K | 169 | ▲+745% Added · +149 sh | Q1 2026 | |
| 17 | US BANCORP \DE\ | $2K | 125 | —Held | Q1 2026 | |
| 18 | Advisory Services Network, LLC | $610 | 35 | ▲New +35 sh | Q1 2026 | |
| 19 | SBI Securities Co., Ltd. | $226 | 13 | ▲+160% Added · +8 sh | Q1 2026 | |
| 20 | WELLS FARGO & COMPANY/MN | $139 | 8 | —Held | Q1 2026 | |
| 21 | MAI Capital Management | $35 | 2 | —Held | 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 |
|---|---|---|---|---|---|
| Dec 30, 2025 | SPANA CARL | President and CEO, Director | Tax withholding (F) | 138 | $3K |
| Dec 30, 2025 | WILLS STEPHEN T | Executive VP and CFO/COO | Tax withholding (F) | 95 | $2K |
| Dec 30, 2025 | WILLS STEPHEN T | Executive VP and CFO/COO | Tax withholding (F) | 91 | $2K |
| Dec 30, 2025 | WILLS STEPHEN T | Executive VP and CFO/COO | Tax withholding (F) | 26 | $556 |
| Dec 30, 2025 | SPANA CARL | President and CEO, Director | Tax withholding (F) | 143 | $3K |
| Dec 30, 2025 | SPANA CARL | President and CEO, Director | Tax withholding (F) | 40 | $855 |
| Dec 24, 2025 | WILLS STEPHEN T | Executive VP and CFO/COO | Sell (S) | 565 | $9K |
| Dec 9, 2025 | DUNTON ALAN W | Director | Grant (A) | 1K | $0 |
| Dec 9, 2025 | DUNTON ALAN W | Director | Grant (A) | 1K | $0 |
| Dec 9, 2025 | DUNTON ALAN W | Director | Grant (A) | 1K | $0 |
| Dec 9, 2025 | PRENDERGAST JOHN K A | Director | Grant (A) | 1K | $0 |
| Dec 9, 2025 | PRENDERGAST JOHN K A | Director | Grant (A) | 1K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| RHYTHM PHARMACEUTICALS INCRYTM | 7 funds | $1.0B |
| MIRUM PHARMACEUTICALS INCMIRM | 7 funds | $177.1M |
| OLEMA PHARMACEUTICALS INCOLMA | 7 funds | $101.2M |
| CORVUS PHARMACEUTICALS INCCRVS | 7 funds | $53.2M |
| ARCELLX INCACLXGBX | 7 funds | $3.7M |
| PRAXIS PRECISION MEDICINES IPRAX | 6 funds | $868.3M |
| TYRA BIOSCIENCES INCTYRA | 6 funds | $501.8M |
| DIANTHUS THERAPEUTICS INCDNTH | 6 funds | $441.9M |
| NUVALENT INC-ANUVL | 6 funds | $438.6M |
| SPYRE THERAPEUTICS INCSYRE | 6 funds | $278.1M |
| BIOCRYST PHARMACEUTICALS INCBCRX | 6 funds | $231.1M |
| MEDLINE INC-CL AMDLN | 6 funds | $219.2M |
Ranked by how many of PTN'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 PTN. 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.