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/AMKR/capital-change-brief"
Use Arkolith's capital_change_brief for AMKR. 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. | $584.0M | 13.0M | ▲+0.3% Added · +46K sh | Q1 2026 | |
| 2 | DIMENSIONAL FUND ADVISORS LP | $494.9M | 11.0M | ▼−14% Reduced · −1.8M sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $409.6M | 9.1M | ▲New +9.1M sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $244.7M | 5.4M | ▲New +5.4M sh | Q1 2026 | |
| 5 | JPMORGAN CHASE & CO | $223.0M | 5.4M | ▲16× Added · +5.1M sh | Q1 2026 | |
| 6 | STATE STREET CORP | $163.4M | 3.6M | ▲+4.5% Added · +155K sh | Q1 2026 | |
| 7 | EARNEST PARTNERS LLC | $154.5M | 3.4M | ▼−9.5% Reduced · −361K sh | Q1 2026 | |
| 8 | AQR CAPITAL MANAGEMENT LLC | $141.4M | 3.2M | ▼−1.8% Reduced · −58K sh | Q1 2026 | |
| 9 | Point72 Asset Management, L.P. | $134.8M | 3.0M | ▼−2.3% Reduced · −71K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $123.0M | 2.7M | ▲+22% Added · +498K sh | Q1 2026 | |
| 11 | AMERICAN CENTURY COMPANIES INC | $122.2M | 2.7M | ▼−24% Reduced · −864K sh | Q1 2026 | |
| 12 | PRINCIPAL FINANCIAL GROUP INC | $118.1M | 2.6M | ▲+19% Added · +424K sh | Q1 2026 | |
| 13 | JANE STREET GROUP, LLC | $104.9M | 2.3M | ▲37× Added · +2.3M sh | Q1 2026 | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $94.6M | 2.1M | ▲+0.1% Added · +2K sh | Q1 2026 | |
| 15 | Fisher Asset Management, LLC | $90.6M | 2.0M | ▼−4.0% Reduced · −84K sh | Q1 2026 | |
| 16 | FIRST TRUST ADVISORS LP | $80.8M | 1.8M | ▼−34% Reduced · −929K sh | Q1 2026 | |
| 17 | Bridgewater Associates, LP | $71.2M | 1.6M | ▲21× Added · +1.5M sh | Q1 2026 | |
| 18 | D. E. Shaw & Co., Inc. | $67.0M | 1.5M | ▲+862% Added · +1.3M sh | Q1 2026 | |
| 19 | Allianz Asset Management GmbH | $62.3M | 1.4M | ▲+37% Added · +377K sh | Q1 2026 | |
| 20 | MORGAN STANLEY | $61.8M | 1.4M | ▼−24% Reduced · −434K sh | Q1 2026 | |
| 21 | NORGES BANK | $53.7M | 1.4M | ▲+66% Added · +540K sh | Q4 2025 | |
| 22 | TWO SIGMA INVESTMENTS, LP | $54.7M | 1.2M | ▲+120% Added · +661K sh | Q1 2026 | |
| 23 | UBS Group AG | $51.2M | 1.1M | ▼−9.3% Reduced · −117K sh | Q1 2026 | |
| 24 | Gotham Asset Management, LLC | $48.3M | 1.1M | ▼−10% Reduced · −119K sh | Q1 2026 | |
| 25 | Trexquant Investment LP | $48.0M | 1.1M | ▲New +1.1M 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 | Faust Megan | CFO | Sell (S) | 1K | $70K |
| Jun 30, 2026 | Faust Megan | CFO | Option exercise (M) | 9K | $0 |
| Jun 30, 2026 | Faust Megan | CFO | Tax withholding (F) | 4K | $321K |
| Jun 30, 2026 | Faust Megan | CFO | Option exercise (M) | 9K | $0 |
| Jun 30, 2026 | Rutten Guillaume Marie Jean | Director | Option exercise (M) | 9K | $0 |
| Jun 30, 2026 | Rutten Guillaume Marie Jean | Director | Option exercise (M) | 9K | $0 |
| Jun 30, 2026 | Engel Kevin K. | President and CEO, Director | Option exercise (M) | 9K | $0 |
| Jun 30, 2026 | Engel Kevin K. | President and CEO, Director | Tax withholding (F) | 4K | $321K |
| Jun 30, 2026 | Engel Kevin K. | President and CEO, Director | Option exercise (M) | 9K | $0 |
| Jun 23, 2026 | KIM SUSAN Y | Director, 10% Owner | Grant (A) | 3 | $0 |
| Jun 23, 2026 | WATSON DAVID N | Director | Grant (A) | 3 | $0 |
| Jun 23, 2026 | Tily Gil C. | Director | Grant (A) | 3 | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 175 funds | $50.2B |
| NVIDIA CORPNVDA | 174 funds | $94.8B |
| MICROSOFT CORPMSFT | 174 funds | $64.8B |
| META PLATFORMS INC-CLASS AMETA | 173 funds | $29.0B |
| ELI LILLY & COLLY | 173 funds | $17.3B |
| BROADCOM INCAVGO | 172 funds | $33.2B |
| APPLE INCAAPL | 171 funds | $77.5B |
| LAM RESEARCH CORPLRCX | 171 funds | $8.1B |
| ALPHABET INC-CL AGOOGL | 170 funds | $43.1B |
| MICRON TECHNOLOGY INCMU | 170 funds | $11.8B |
| COSTCO WHOLESALE CORPCOST | 170 funds | $11.6B |
| ADVANCED MICRO DEVICESAMD | 170 funds | $7.7B |
Ranked by how many of AMKR's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for AMKR. 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.