Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in AMTX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 2.6M | $8.4M | — | 3.866% | 0.00% |
| 2 | Grantham, Mayo, Van Otterloo & Co. LLC | 1.1M | $3.3M | -0.4% | 1.541% | 0.01% |
| 3 | MARSHALL WACE, LLP | 880K | $2.8M | +57.2% | 1.291% | 0.00% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 731K | $2.3M | +5.4% | 1.072% | 0.00% |
| 5 | BlackRock, Inc. | 633K | $2.0M | +2.3% | 0.929% | 0.00% |
| 6 | CITADEL ADVISORS LLC | 581K | $1.9M | -13.2% | 0.852% | 0.00% |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 567K | $1.8M | -18.3% | 0.832% | 0.00% |
| 8 | D. E. Shaw & Co., Inc. | 545K | $1.7M | +1047.9% | 0.800% | 0.00% |
| 9 | MILLENNIUM MANAGEMENT LLC | 417K | $1.3M | +252.7% | 0.612% | 0.00% |
| 10 | TWO SIGMA INVESTMENTS, LP | 380K | $1.2M | +190.5% | 0.558% | 0.00% |
| 11 | VANGUARD FIDUCIARY TRUST CO | 378K | $1.2M | — | 0.555% | 0.00% |
| 12 | STATE STREET CORP | 302K | $963K | +16.0% | 0.443% | 0.00% |
| 13 | CIBC Bancorp USA Inc. | 250K | $798K | — | 0.367% | 0.00% |
| 14 | 683 Capital Management, LLC | 236K | $751K | 0.0% | 0.346% | 0.06% |
| 15 | GOLDMAN SACHS GROUP INC | 198K | $630K | +104.3% | 0.290% | 0.00% |
| 16 | UBS Group AG | 179K | $571K | +128.7% | 0.263% | 0.00% |
| 17 | LPL Financial LLC | 136K | $434K | +3.7% | 0.199% | 0.00% |
| 18 | NORTHERN TRUST CORP | 135K | $431K | +10.8% | 0.198% | 0.00% |
| 19 | ADVISOR GROUP HOLDINGS, INC. | 127K | $405K | +88.6% | 0.186% | 0.00% |
| 20 | Hudson Bay Capital Management LP | 107K | $341K | — | 0.157% | 0.00% |
| 21 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 102K | $325K | 0.0% | 0.149% | 0.01% |
| 22 | BANK OF AMERICA CORP /DE/ | 101K | $324K | +148.3% | 0.149% | 0.00% |
| 23 | J. Derek Lewis & Associates Inc. | 232K | $322K | — | 0.340% | 0.08% |
| 24 | PNC FINANCIAL SERVICES GROUP, INC. | 95K | $305K | -6.2% | 0.140% | 0.00% |
| 25 | Centiva Capital, LP | 91K | $290K | — | 0.133% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in AMTX — a direct measure of their conviction.
Filings activity in AMTX during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 76 | +10% | 29.54% | +15.78 pp | $39M | +115% |
| Q4 2025 | 69 | 6.8% | 13.76% | 4.60 pp | $18M | 25% |
| Q3 2025 | 74 | +4.2% | 18.36% | +0.57 pp | $25M | +3.2% |
| Q2 2025 | 71 | 5.3% | 17.79% | +2.84 pp | $24M | +19% |
| Q1 2025 | 75 | 1.3% | 14.95% | 185.04 pp | $20M | 97% |
| Q4 2024 | 76 | +10% | 199.99% | +180.64 pp | $746M | +2784% |
| Q3 2024 | 69 | 5.5% | 19.35% | 173.84 pp | $26M | 90% |
| Q2 2024 | 73 | — | 193.19% | — | $258M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying AMTX stock.
Based on Q1 2026 13F filings, institutional ownership of Aemetis, Inc. stands at 29.5%, held across 76 reporting institutions.
VANGUARD CAPITAL MANAGEMENT LLC is the largest reported institutional holder of AMTX, with approximately 2,634,653 shares worth $0.01B as of Q1 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of AMTX, including CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, MILLENNIUM MANAGEMENT LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for AMTX is 73 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
26 institutions opened new positions in AMTX during Q1 2026, while 19 fully exited. 46 added to existing positions and 3 trimmed.
AMTX institutional ownership rose by 15.78 percentage points quarter-over-quarter, with a net change of +7 holders.
The top 10 institutions account for 68.1% of all reported 13F value in AMTX, and the top 25 account for 88.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Aemetis, Inc. (AMTX) Institutional Ownership