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/AMPL/capital-change-brief"
Use Arkolith's capital_change_brief for AMPL. 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. | $69.3M | 10.2M | ▲+3.9% Added · +380K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $42.0M | 6.2M | ▲New +6.2M sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $27.9M | 4.1M | ▲New +4.1M sh | Q1 2026 | |
| 4 | FMR LLC | $22.6M | 3.3M | ▲+642% Added · +2.9M sh | Q1 2026 | |
| 5 | SC US (TTGP), LTD. | $19.1M | 2.8M | —Held | Q1 2026 | |
| 6 | BAILLIE GIFFORD & CO | $18.0M | 2.6M | ▼−3.9% Reduced · −108K sh | Q1 2026 | |
| 7 | Nuveen, LLC | $17.4M | 2.6M | ▼−3.4% Reduced · −91K sh | Q1 2026 | |
| 8 | STATE STREET CORP | $16.6M | 2.4M | ▲+5.4% Added · +124K sh | Q1 2026 | |
| 9 | Point72 Asset Management, L.P. | $16.4M | 2.4M | ▼−31% Reduced · −1.1M sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $15.9M | 2.3M | ▲+4.5% Added · +99K sh | Q1 2026 | |
| 11 | MILLENNIUM MANAGEMENT LLC | $13.9M | 2.0M | ▼−9.8% Reduced · −221K sh | Q1 2026 | |
| 12 | JACOBS LEVY EQUITY MANAGEMENT, INC | $11.8M | 1.7M | ▲30× Added · +1.7M sh | Q1 2026 | |
| 13 | Optimus Prime Fund Management Co., Ltd. | $10.8M | 1.6M | —Held | Q1 2026 | |
| 14 | MONIMUS CAPITAL MANAGEMENT, LP | $8.6M | 1.3M | ▲+240% Added · +893K sh | Q1 2026 | |
| 15 | ArrowMark Colorado Holdings LLC | $8.6M | 1.3M | ▼−15% Reduced · −228K sh | Q1 2026 | |
| 16 | AQR CAPITAL MANAGEMENT LLC | $8.4M | 1.2M | ▲+46% Added · +392K sh | Q1 2026 | |
| 17 | MORGAN STANLEY | $6.3M | 921K | ▲+34% Added · +235K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $5.9M | 869K | ▲+5.6% Added · +46K sh | Q1 2026 | |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.0M | 734K | ▼−5.7% Reduced · −45K sh | Q1 2026 | |
| 20 | Squarepoint Ops LLC | $4.9M | 712K | ▼−26% Reduced · −256K sh | Q1 2026 | |
| 21 | TWO SIGMA INVESTMENTS, LP | $4.7M | 692K | ▼−34% Reduced · −350K sh | Q1 2026 | |
| 22 | VANGUARD FIDUCIARY TRUST CO | $4.5M | 661K | ▲New +661K sh | Q1 2026 | |
| 23 | DIMENSIONAL FUND ADVISORS LP | $4.2M | 618K | ▲+368% Added · +486K sh | Q1 2026 | |
| 24 | GOLDMAN SACHS GROUP INC | $4.1M | 598K | ▼−51% Reduced · −622K sh | Q1 2026 | |
| 25 | Qube Research & Technologies Ltd | $4.1M | 597K | ▲New +597K 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 8, 2026 | Liu Curtis | Chief Technology Officer, Director, 10% Owner | Gift (G) | 175K | $0 |
| Jul 8, 2026 | Liu Curtis | Chief Technology Officer, Director, 10% Owner | Gift (G) | 175K | $0 |
| Jul 5, 2026 | Tzuo Tien | Director | Grant (A) | 2K | $0 |
| Jul 5, 2026 | Schultz Erica | Director | Grant (A) | 2K | $0 |
| Jun 12, 2026 | Wong Catherine | Director | Sell (S) | 7K | $51K |
| Jun 9, 2026 | Grady Patrick W | Director, 10% Owner | Grant (A) | 25K | $0 |
| Jun 9, 2026 | Whitehurst James M | Director | Grant (A) | 25K | $0 |
| Jun 9, 2026 | Wong Catherine | Director | Grant (A) | 25K | $0 |
| Jun 9, 2026 | Gill Ronald S | Director | Grant (A) | 25K | $0 |
| Jun 9, 2026 | Schultz Erica | Director | Grant (A) | 25K | $0 |
| Jun 1, 2026 | Liu Curtis | Chief Technology Officer, Director, 10% Owner | Sell (S) | 23K | $183K |
| May 15, 2026 | Crook Nathaniel Glenn | Chief Commercial Officer | Tax withholding (F) | 101K | $614K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 65 funds | $24.5B |
| AMAZON.COM INCAMZN | 64 funds | $18.6B |
| BROADCOM INCAVGO | 64 funds | $13.3B |
| META PLATFORMS INC-CLASS AMETA | 64 funds | $11.5B |
| ALPHABET INC-CL AGOOGL | 63 funds | $15.9B |
| JPMORGAN CHASE & COJPM | 63 funds | $7.8B |
| MICRON TECHNOLOGY INCMU | 63 funds | $5.4B |
| NVIDIA CORPNVDA | 62 funds | $36.0B |
| BANK OF AMERICA CORPBAC | 62 funds | $2.9B |
| UNITEDHEALTH GROUP INCUNH | 62 funds | $2.1B |
| SCHWAB (CHARLES) CORPSCHW | 62 funds | $1.7B |
| DANAHER CORPDHR | 62 funds | $1.3B |
Ranked by how many of AMPL'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 AMPL. 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.