Among active 13F managers last quarter, 11 opened and 13 added, while 7 reduced; the largest holder to move was Marshall Wace, LLP (+57%). Over the last 180 days, 1 insider sold and none bought, a net -$21K in open-market trades.
The legs disagree, or only one of them leans.
76 tracked 13F filers disclose a position in AMTX as of the latest SEC 13F filings, a combined $36.7M 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 4.0M | $6.5M | ▲+527% Added · +3.3M sh | Q2 2026 | |
| 2 | Vanguard Capital Management LLC | 3.0M | $4.9M | ▲+14% Added · +357K sh | Q2 2026 | |
| 3 | Geode Capital Management, LLC | 1.7M | $2.8M | ▲+135% Added · +989K sh | Q2 2026 | |
| 4 | Grantham, Mayo, Van Otterloo & Co. LLC | 1.1M | $1.7M | ▲+1.4% Added · +14K sh | Q2 2026 | |
| 5 | Marshall Wace, LLP | 880K | $2.8M | ▲+57% Added · +320K sh | Q1 2026 | |
| 6 | State Street Corp | 726K | $1.2M | ▲+141% Added · +424K sh | Q2 2026 | |
| 7 | D. E. Shaw & Co., Inc. | 545K | $1.7M | ▲11× Added · +498K sh | Q1 2026 | |
| 8 | Vanguard Portfolio Management LLC | 442K | $725K | ▲New +442K sh | Q2 2026 | |
| 9 | Vanguard Fiduciary Trust Co | 439K | $720K | ▲+16% Added · +61K sh | Q2 2026 | |
| 10 | Millennium Management LLC | 417K | $1.3M | ▲+253% Added · +299K sh | Q1 2026 | |
| 11 | Jane Street Group, LLC | 401K | $1.3M | ▲+119% Added · +218K sh | Q1 2026 | |
| 12 | Susquehanna International Group, LLP | 381K | $1.2M | ▼−39% Reduced · −243K sh | Q1 2026 | |
| 13 | Two Sigma Investments, LP | 380K | $1.2M | ▲+190% Added · +249K sh | Q1 2026 | |
| 14 | Citadel Advisors LLC | 267K | $438K | ▼−43% Reduced · −202K sh | Q2 2026 | |
| 15 | CIBC Bancorp USA Inc. | 250K | $798K | ▲New +250K sh | Q1 2026 | |
| 16 | Goldman Sachs Group Inc | 198K | $630K | ▲+104% Added · +101K sh | Q1 2026 | |
| 17 | Hamilton Capital Partners, LLC | 195K | $320K | ▲Added Added · +195K sh | Q2 2026 | |
| 18 | UBS Group AG | 179K | $571K | ▲+129% Added · +101K sh | Q1 2026 | |
| 19 | LPL Financial LLC | 136K | $434K | ▲+3.7% Added · +5K sh | Q1 2026 | |
| 20 | Northern Trust Corp | 135K | $431K | ▲+11% Added · +13K sh | Q1 2026 | |
| 21 | Osaic Holdings, Inc. | 127K | $405K | ▲+89% Added · +60K sh | Q1 2026 | |
| 22 | Bridgeway Capital Management, LLC | 127K | $208K | ▲+25% Added · +25K sh | Q2 2026 | |
| 23 | J. Derek Lewis & Associates Inc. | 125K | $205K | ▼−38% Reduced · −76K sh | Q2 2026 | |
| 24 | Price T Rowe Associates Inc | 120K | $197K | ▲+255% Added · +86K sh | Q2 2026 | |
| 25 | Deeter Investments LLP | 110K | $153K | ▲New +110K sh | Q4 2025 |
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 13 added to an existing one, while 7 reduced. 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 | Their position there |
|---|---|---|
| Nvidia CorpNVDA | 33 funds | $97.9B |
| Apple IncAAPL | 33 funds | $67.5B |
| Alphabet Inc-CL AGOOGL | 33 funds | $50.3B |
| Microsoft CorpMSFT | 33 funds | $49.2B |
| Broadcom IncAVGO | 33 funds | $42.2B |
| Amazon.com IncAMZN | 33 funds | $40.0B |
| Tesla IncTSLA | 33 funds | $17.7B |
| JPMorgan Chase & CoJPM | 33 funds | $14.4B |
| Meta Platforms Inc-Class AMETA | 32 funds | $26.7B |
| Micron Technology IncMU | 32 funds | $23.6B |
| Berkshire Hathaway Inc-CL BBRK/B | 32 funds | $8.0B |
| Chevron CorpCVX | 32 funds | $6.7B |
Ranked by how many of AMTX's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in AMTX.
| 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) 4 lots, same day | 26K | $67K |
| May 23, 2024 | Block John R | Director | Sell (S) | 52K | $180K |
| Sep 12, 2023 | Boness Naomi Louise | Director | Sell (S) 3 lots, same day | 15K | $85K |
| Jun 16, 2023 | Block John R | Director | Sell (S) | 19K | $121K |
| Mar 14, 2022 | Block John R | Director | Buy (S) | 10K | $126K |
| Mar 14, 2022 | Block John R | Director | Sell (S) 3 lots, same day | 55K | $669K |
| Dec 20, 2021 | Simon Timothy Alan | Director | Buy (P) | 1K | $12K |
| Nov 8, 2021 | Foster Andrew B | Executive Vice President | Sell (S) | 10K | $220K |
| Nov 5, 2021 | Foster Andrew B | Executive Vice President | Sell (S) | 1K | $30K |
| Nov 3, 2021 | Barton Francis P | Director | Sell (S) | 11K | $223K |
| Nov 2, 2021 | Barton Francis P | Director | Sell (S) | 9K | $200K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 32 | 13 | – |
Insiders Form 4 open-market | 0 | 1 | -$21K |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for AMTX
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.