| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Rubric Capital Management LP | $24.0M | 30.0M | —Held | Q1 2026 | |
| 2 | Clearline Capital LP | $9.8M | 12.2M | —Held | Q1 2026 | |
| 3 | BlackRock, Inc. | $8.1M | 10.1M | ▼−1.1% Reduced · −112K sh | Q1 2026 | |
| 4 | ORBIMED ADVISORS LLC | $7.9M | 9.8M | ▲New +9.8M sh | Q1 2026 | |
| 5 | Velan Capital Investment Management LP | $7.0M | 8.8M | —Held | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $6.2M | 7.8M | ▲New +7.8M sh | Q1 2026 | |
| 7 | MILLENNIUM MANAGEMENT LLC | $6.1M | 7.6M | ▲+6.4% Added · +461K sh | Q1 2026 | |
| 8 | TANG CAPITAL MANAGEMENT LLC | $5.0M | 6.3M | —Held | Q1 2026 | |
| 9 | PALISADE CAPITAL MANAGEMENT, LP | $4.9M | 6.1M | ▼−2.9% Reduced · −185K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $3.2M | 4.0M | ▼−1.7% Reduced · −71K sh | Q1 2026 | |
| 11 | STATE STREET CORP | $3.1M | 3.8M | ▲+1.7% Added · +66K sh | Q1 2026 | |
| 12 | D. E. Shaw & Co., Inc. | $2.1M | 2.6M | ▼−13% Reduced · −404K sh | Q1 2026 | |
| 13 | NEW YORK STATE COMMON RETIREMENT FUND | $2.1M | 2.6M | —Held | Q1 2026 | |
| 14 | UBS Group AG | $1.8M | 2.3M | ▲+9.3% Added · +194K sh | Q1 2026 | |
| 15 | Congress Park Capital LLC | $861K | 2.0M | ▼−50% Reduced · −2.0M sh | Q2 2026 | |
| 16 | RENAISSANCE TECHNOLOGIES LLC | $1.4M | 1.7M | ▼−10% Reduced · −198K sh | Q1 2026 | |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.1M | 1.4M | ▼−2.8% Reduced · −39K sh | Q1 2026 | |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.0M | 1.3M | ▲New +1.3M sh | Q1 2026 | |
| 19 | NORTHERN TRUST CORP | $938K | 1.2M | ▲+7.4% Added · +81K sh | Q1 2026 | |
| 20 | VANGUARD FIDUCIARY TRUST CO | $922K | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 21 | GOLDMAN SACHS GROUP INC | $846K | 1.1M | ▲+6.8% Added · +67K sh | Q1 2026 | |
| 22 | PANAGORA ASSET MANAGEMENT INC | $770K | 963K | ▲+119% Added · +522K sh | Q1 2026 | |
| 23 | Squarepoint Ops LLC | $688K | 860K | ▲+27% Added · +182K sh | Q1 2026 | |
| 24 | CITADEL ADVISORS LLC | $607K | 759K | ▼−64% Reduced · −1.3M sh | Q1 2026 | |
| 25 | AQR CAPITAL MANAGEMENT LLC | $513K | 642K | ▲+70% Added · +265K 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.
| Company | Co-held by | Combined value |
|---|---|---|
| ELI LILLY & COLLY | 49 funds | $5.0B |
| MICROSOFT CORPMSFT | 48 funds | $17.5B |
| AMAZON.COM INCAMZN | 48 funds | $13.1B |
| BROADCOM INCAVGO | 48 funds | $8.8B |
| META PLATFORMS INC-CLASS AMETA | 48 funds | $8.1B |
| TESLA INCTSLA | 48 funds | $5.0B |
| VISA INC-CLASS A SHARESV | 48 funds | $3.6B |
| COSTCO WHOLESALE CORPCOST | 48 funds | $3.4B |
| CISCO SYSTEMS INCCSCO | 48 funds | $2.0B |
| ADVANCED MICRO DEVICESAMD | 48 funds | $1.9B |
| UNITEDHEALTH GROUP INCUNH | 48 funds | $1.9B |
| ORACLE CORPORCL | 48 funds | $1.9B |
Ranked by how many of HRTX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 8, 2025 | Rosen David Efraim | 10% Owner | Buy (P) | 2.4M | $3.6M |
| Aug 8, 2025 | Morgan Adam | Director | Buy (P) | 1.8M | $2.6M |
| Nov 17, 2023 | Forbes William P | EVP, Chief Development Officer | Buy (P) | 25K | $27K |
| Nov 16, 2023 | Duarte Ira | EVP, Chief Financial Officer | Buy (P) | 85K | $76K |
| Nov 16, 2023 | Collard Craig A | Chief Executive Officer, Director | Buy (P) | 150K | $138K |
| Nov 16, 2023 | Forbes William P | EVP, Chief Development Officer | Buy (P) | 50K | $47K |
| Jul 21, 2023 | Morgan Adam | Director | Buy (P) | 2.5M | $3.4M |
| May 3, 2022 | MANHARD KIMBERLY | EVP, Drug Development, Director | Sell (S) | 2K | $7K |
| Dec 21, 2021 | Johnson Craig A | Director | Sell (S) | 250 | $2K |
| Dec 21, 2021 | Christian Waage | Director | Sell (S) | 300 | $3K |
| Sep 21, 2021 | Johnson Craig A | Director | Sell (S) | 250 | $3K |
| Sep 21, 2021 | Christian Waage | Director | Sell (S) | 300 | $4K |
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/HRTX/capital-change-brief"
Use Arkolith's capital_change_brief for HRTX. 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 HRTX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.