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/ETON/capital-change-brief"
Use Arkolith's capital_change_brief for ETON. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Opaleye Management Inc. | $70.6M | 2.9M | —Held | Q1 2026 | |
| 2 | EcoR1 Capital, LLC | $53.6M | 2.2M | ▲+7.0% Added · +141K sh | Q1 2026 | |
| 3 | BlackRock, Inc. | $42.4M | 1.7M | ▼−1.2% Reduced · −22K sh | Q1 2026 | |
| 4 | Nantahala Capital Management, LLC | $29.0M | 1.2M | —Held | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $24.5M | 994K | ▲New +994K sh | Q1 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $14.3M | 578K | ▲+2.2% Added · +13K sh | Q1 2026 | |
| 7 | STATE STREET CORP | $13.1M | 530K | ▲+5.6% Added · +28K sh | Q1 2026 | |
| 8 | National Philanthropic Trust | $12.1M | 492K | —Held | Q1 2026 | |
| 9 | MORGAN STANLEY | $11.8M | 478K | ▼−3.2% Reduced · −16K sh | Q1 2026 | |
| 10 | OBERWEIS ASSET MANAGEMENT INC/ | $10.8M | 439K | ▲+1.9% Added · +8K sh | Q1 2026 | |
| 11 | CANNELL CAPITAL LLC | $8.4M | 342K | ▲+58% Added · +125K sh | Q1 2026 | |
| 12 | BNP PARIBAS FINANCIAL MARKETS | $7.5M | 302K | ▲+8.9% Added · +25K sh | Q1 2026 | |
| 13 | NORTHERN TRUST CORP | $5.9M | 238K | ▲+2.6% Added · +6K sh | Q1 2026 | |
| 14 | GOLDMAN SACHS GROUP INC | $5.4M | 217K | ▲+11% Added · +21K sh | Q1 2026 | |
| 15 | PRELUDE CAPITAL MANAGEMENT, LLC | $4.7M | 189K | ▲+317% Added · +143K sh | Q1 2026 | |
| 16 | Panoramic Capital, LLC | $4.6M | 185K | ▲New +185K sh | Q1 2026 | |
| 17 | Lumbard & Kellner, LLC | $4.3M | 176K | ▲+0.6% Added · +967 sh | Q1 2026 | |
| 18 | Woodline Partners LP | $4.2M | 171K | ▲+79% Added · +75K sh | Q1 2026 | |
| 19 | JPMORGAN CHASE & CO | $3.8M | 170K | ▼−8.4% Reduced · −16K sh | Q1 2026 | |
| 20 | UBS Group AG | $4.2M | 169K | ▲+33% Added · +42K sh | Q1 2026 | |
| 21 | Soleus Capital Management, L.P. | $4.1M | 166K | ▲New +166K sh | Q1 2026 | |
| 22 | VANGUARD FIDUCIARY TRUST CO | $4.1M | 165K | ▲New +165K sh | Q1 2026 | |
| 23 | RENAISSANCE TECHNOLOGIES LLC | $4.0M | 163K | ▼−21% Reduced · −42K sh | Q1 2026 | |
| 24 | Diametric Capital, LP | $3.9M | 157K | ▼−19% Reduced · −36K sh | Q1 2026 | |
| 25 | VANGUARD PORTFOLIO MANAGEMENT LLC | $3.7M | 152K | ▲New +152K 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 |
|---|---|---|---|---|---|
| Jul 14, 2026 | Opaleye Management Inc. | 10% Owner | Sell (S) | 13K | $500K |
| Jul 14, 2026 | Opaleye Management Inc. | 10% Owner | Sell (S) | 15K | $563K |
| Jul 14, 2026 | BRYNJELSEN SEAN | President & CEO, Director | Option exercise (M) | 200K | $274K |
| Jul 14, 2026 | BRYNJELSEN SEAN | President & CEO, Director | Option exercise (M) | 200K | $0 |
| Jul 12, 2026 | Krempa David | Chief Business Officer | Option exercise (M) | 10K | — |
| Jul 12, 2026 | Krempa David | Chief Business Officer | Option exercise (M) | 10K | $0 |
| Jul 12, 2026 | BRYNJELSEN SEAN | President & CEO, Director | Option exercise (M) | 28K | — |
| Jul 12, 2026 | BRYNJELSEN SEAN | President & CEO, Director | Option exercise (M) | 28K | $0 |
| Jul 7, 2026 | Opaleye Management Inc. | 10% Owner | Sell (S) | 20K | $767K |
| Jul 7, 2026 | Opaleye Management Inc. | 10% Owner | Sell (S) | 7K | $257K |
| Jul 6, 2026 | Opaleye Management Inc. | 10% Owner | Sell (S) | 10K | $380K |
| Jul 2, 2026 | Opaleye Management Inc. | 10% Owner | Sell (S) | 65K | $2.4M |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 29 funds | $14.1B |
| ALPHABET INC-CL AGOOGL | 29 funds | $9.8B |
| AMAZON.COM INCAMZN | 28 funds | $13.2B |
| META PLATFORMS INC-CLASS AMETA | 28 funds | $6.9B |
| ELI LILLY & COLLY | 28 funds | $4.0B |
| VISA INC-CLASS A SHARESV | 28 funds | $3.1B |
| UNITEDHEALTH GROUP INCUNH | 28 funds | $1.8B |
| APPLE INCAAPL | 27 funds | $16.2B |
| ALPHABET INC-CL CGOOG | 27 funds | $7.8B |
| JPMORGAN CHASE & COJPM | 27 funds | $4.0B |
| MASTERCARD INC - AMA | 27 funds | $3.3B |
| COSTCO WHOLESALE CORPCOST | 27 funds | $2.9B |
Ranked by how many of ETON'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 ETON. 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.