71 tracked 13F filers disclose a position in AMTX as of the latest SEC 13F filings, a combined $39.5M 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 | VANGUARD CAPITAL MANAGEMENT LLC | $8.4M | 2.6M | →First observed position No prior filed position | Q1 2026 | |
| 2 | Grantham, Mayo, Van Otterloo & Co. LLC | $3.3M | 1.1M | ▼−0.4% Reduced · −5K sh | Q1 2026 | |
| 3 | MARSHALL WACE, LLP | $2.8M | 880K | ▲+57% Added · +320K sh | Q1 2026 | |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | $2.3M | 731K | ▲+5.3% Added · +37K sh | Q1 2026 | |
| 5 | BlackRock, Inc. | $2.0M | 633K | ▲+2.3% Added · +14K sh | Q1 2026 | |
| 6 | D. E. Shaw & Co., Inc. | $1.7M | 545K | ▲11× Added · +498K sh | Q1 2026 | |
| 7 | CITADEL ADVISORS LLC | $1.5M | 470K | ▼−5.8% Reduced · −29K sh | Q1 2026 | |
| 8 | MILLENNIUM MANAGEMENT LLC | $1.3M | 417K | ▲+253% Added · +299K sh | Q1 2026 | |
| 9 | JANE STREET GROUP, LLC | $1.3M | 401K | ▲+119% Added · +218K sh | Q1 2026 | |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.2M | 381K | ▼−39% Reduced · −243K sh | Q1 2026 | |
| 11 | TWO SIGMA INVESTMENTS, LP | $1.2M | 380K | ▲+190% Added · +249K sh | Q1 2026 | |
| 12 | VANGUARD FIDUCIARY TRUST CO | $1.2M | 378K | →First observed position No prior filed position | Q1 2026 | |
| 13 | STATE STREET CORP | $963K | 302K | ▲+16% Added · +42K sh | Q1 2026 | |
| 14 | CIBC Bancorp USA Inc. | $798K | 250K | ▲New +250K sh | Q1 2026 | |
| 15 | 683 Capital Management, LLC | $751K | 236K | —Held | Q1 2026 | |
| 16 | J. Derek Lewis & Associates Inc. | $642K | 201K | ▼−13% Reduced · −31K sh | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $630K | 198K | ▲+104% Added · +101K sh | Q1 2026 | |
| 18 | HAMILTON CAPITAL PARTNERS, LLC | $320K | 195K | ▲Added Added · +195K sh | Q2 2026 | |
| 19 | UBS Group AG | $571K | 179K | ▲+129% Added · +101K sh | Q1 2026 | |
| 20 | LPL Financial LLC | $434K | 136K | ▲+3.7% Added · +5K sh | Q1 2026 | |
| 21 | NORTHERN TRUST CORP | $431K | 135K | ▲+11% Added · +13K sh | Q1 2026 | |
| 22 | OSAIC HOLDINGS, INC. | $405K | 127K | ▲+89% Added · +60K sh | Q1 2026 | |
| 23 | Hudson Bay Capital Management LP | $341K | 107K | ▲New +107K sh | Q1 2026 | |
| 24 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $325K | 102K | —Held | Q1 2026 | |
| 25 | BANK OF AMERICA CORP /DE/ | $324K | 101K | ▲+148% Added · +61K 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.
Last quarter, 11 funds opened a new position in AMTX and 9 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 |
|---|---|---|
| UNITEDHEALTH GROUP INCUNH | 21 funds | $2.5B |
| ELI LILLY & COLLY | 21 funds | $2.5B |
| MICROSOFT CORPMSFT | 20 funds | $7.8B |
| AMAZON.COM INCAMZN | 20 funds | $7.6B |
| ALPHABET INC-CL AGOOGL | 20 funds | $5.7B |
| BROADCOM INCAVGO | 20 funds | $5.1B |
| MASTERCARD INC - AMA | 20 funds | $2.2B |
| COSTCO WHOLESALE CORPCOST | 20 funds | $1.9B |
| CHEVRON CORPCVX | 20 funds | $1.6B |
| PALANTIR TECHNOLOGIES INC-APLTR | 20 funds | $1.3B |
| ORACLE CORPORCL | 20 funds | $1.1B |
| CAPITAL ONE FINANCIAL CORPCOF | 20 funds | $898.4M |
Ranked by how many of AMTX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 10, 2026 | Simon Timothy Alan | Director | Sell (S) | 10K | $21K |
| Aug 14, 2025 | BARTON FRANCIS P | Director | Sell (S) | 1K | $3K |
| Aug 14, 2025 | BARTON FRANCIS P | Director | Sell (S) | 8K | $20K |
| Aug 14, 2025 | BARTON FRANCIS P | Director | Sell (S) | 5K | $13K |
| Aug 14, 2025 | BARTON FRANCIS P | Director | Sell (S) | 12K | $31K |
| May 23, 2024 | BLOCK JOHN R | Director | Sell (S) | 52K | $180K |
| Sep 12, 2023 | Boness Naomi Louise | Director | Sell (S) | 9K | $49K |
| Sep 12, 2023 | Boness Naomi Louise | Director | Sell (S) | 1K | $7K |
| Sep 12, 2023 | Boness Naomi Louise | Director | Sell (S) | 5K | $28K |
| Jun 16, 2023 | BLOCK JOHN R | Director | Sell (S) | 19K | $121K |
| Mar 14, 2022 | BLOCK JOHN R | Director | Sell (S) | 1K | $16K |
| Mar 14, 2022 | BLOCK JOHN R | Director | Sell (S) | 19K | $229K |
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/AMTX/capital-change-brief"
Use Arkolith's capital_change_brief for AMTX. 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 AMTX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.