45 tracked 13F filers disclose a position in AMPG as of the latest SEC 13F filings, a combined $23.2M in reported value. 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.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BARD ASSOCIATES INC | $10.3M | 1.5M | ▼−7.5% Reduced · −120K sh | Q2 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $1.5M | 805K | →First observed position No prior filed position | Q1 2026 | |
| 3 | LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | $3.1M | 450K | ▲+900% Added · +405K sh | Q2 2026 | |
| 4 | RENAISSANCE TECHNOLOGIES LLC | $708K | 373K | ▲+136% Added · +214K sh | Q1 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $1.7M | 246K | ▲+1.4% Added · +3K sh | Q2 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $410K | 216K | ▲+157% Added · +132K sh | Q1 2026 | |
| 7 | Informed Momentum Co LLC | $937K | 135K | ▲New +135K sh | Q2 2026 | |
| 8 | STATE STREET CORP | $790K | 113K | ▲+27% Added · +24K sh | Q2 2026 | |
| 9 | VANGUARD FIDUCIARY TRUST CO | $211K | 111K | →First observed position No prior filed position | Q1 2026 | |
| 10 | BlackRock, Inc. | $205K | 108K | ▲+14% Added · +13K sh | Q1 2026 | |
| 11 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $201K | 106K | ▲New +106K sh | Q1 2026 | |
| 12 | Integrated Wealth Concepts LLC | $492K | 71K | ▼−83% Reduced · −354K sh | Q2 2026 | |
| 13 | ESSEX INVESTMENT MANAGEMENT CO LLC | $421K | 61K | ▼−31% Reduced · −27K sh | Q2 2026 | |
| 14 | TWO SIGMA INVESTMENTS, LP | $93K | 49K | ▼−58% Reduced · −67K sh | Q1 2026 | |
| 15 | NORTHERN TRUST CORP | $88K | 47K | —Held | Q1 2026 | |
| 16 | XTX Topco Ltd | $82K | 43K | ▲+29% Added · +10K sh | Q1 2026 | |
| 17 | Caitong International Asset Management Co., Ltd | $226K | 32K | ▲New +32K sh | Q2 2026 | |
| 18 | MANGROVE PARTNERS IM, LLC | $217K | 31K | ▲New +31K sh | Q2 2026 | |
| 19 | LPL Financial LLC | $58K | 31K | ▲New +31K sh | Q1 2026 | |
| 20 | Midwest Financial Group LLC | $201K | 29K | ▲New +29K sh | Q2 2026 | |
| 21 | UBS Group AG | $50K | 26K | ▲+7.4% Added · +2K sh | Q1 2026 | |
| 22 | StoneX Group Inc. | $99K | 21K | ▲New +21K sh | Q2 2026 | |
| 23 | Schonfeld Strategic Advisors LLC | $128K | 18K | ▲New +18K sh | Q2 2026 | |
| 24 | Private Advisor Group, LLC | $121K | 17K | ▲New +17K sh | Q2 2026 | |
| 25 | Walser Wealth Management Company, A Ltd Liability Co | $118K | 17K | ▲New +17K sh | Q2 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.
Last quarter, 11 funds opened a new position in AMPG and 4 added to an existing one, while 6 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| ALPHABET INC-CL AGOOGL | 22 funds | $3.9B |
| ALPHABET INC-CL CGOOG | 22 funds | $1.6B |
| VISA INC-CLASS A SHARESV | 22 funds | $890.6M |
| NVIDIA CORPNVDA | 21 funds | $9.7B |
| APPLE INCAAPL | 21 funds | $6.9B |
| AMAZON.COM INCAMZN | 21 funds | $5.6B |
| MICRON TECHNOLOGY INCMU | 21 funds | $4.3B |
| MICROSOFT CORPMSFT | 21 funds | $3.7B |
| TESLA INCTSLA | 21 funds | $3.2B |
| JPMORGAN CHASE & COJPM | 21 funds | $2.2B |
| COSTCO WHOLESALE CORPCOST | 21 funds | $1.9B |
| UNITEDHEALTH GROUP INCUNH | 21 funds | $1.8B |
Ranked by how many of AMPG's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 20, 2026 | Maqbool Fawad | Chief Executive Officer, Director, 10% Owner | Buy (P) | 7K | $25K |
| Aug 20, 2026 | Maqbool Fawad | Chief Executive Officer, Director, 10% Owner | Buy (P) | 5K | $18K |
| Jun 23, 2026 | Mazziota Daniel Richard | Director | Sell (S) | 10K | $77K |
| Jun 22, 2026 | Mazziota Daniel Richard | Director | Sell (S) | 7K | $61K |
| Jun 1, 2026 | Flores Jorge Luis | Chief Operating Officer | Sell (S) | 30K | $161K |
| May 28, 2026 | Sanfratello Louisa | Chief Financial Officer, Director | Sell (S) | 50K | $240K |
| May 22, 2026 | Mazziota Daniel Richard | Director | Sell (S) | 10K | $50K |
| Dec 18, 2025 | Modi Shailesh | Director | Buy (P) | 2K | $6K |
| Jun 20, 2025 | Mazziota Daniel Richard | Director | Buy (P) | 7K | $14K |
| Apr 8, 2025 | Mazziota Daniel Richard | Director | Buy (P) | 5K | $7K |
| Oct 7, 2024 | Flores Jorge Luis | Chief Operating Officer | Buy (P) | 5K | $4K |
| Aug 30, 2024 | Maqbool Fawad | Chairman, CEO, Director, 10% Owner | Buy (P) | 8K | $6K |
| Class | 13F holders | Value held |
|---|---|---|
| AMPGthis pageCommon Stock | 45 funds | $23.2M |
| 03211Q135RIGHT 07/18/2026 | 6 funds | $5.6M |
| AMPGZRIGHT 11/20/2026 | 5 funds | $5.0M |
| 03211Q950PUT | 1 funds | $7.0M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for AMPG
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/AMPG/capital-change-brief"
Use Arkolith's capital_change_brief for AMPG. 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 AMPG. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.