Aemetis, Inc. (AMTX) Ownership
AMTX ownership summary
as of October 18, 2026- Institutions
- 24.6% of shares outstanding
- Insiders
- 6.95% of shares outstanding
- Shares outstanding
- 72.2M
- Float
- 67.2M shares available to trade
- Short interest
- 11.70% 7.9M shares short
- Days to cover
- 9.30 short interest down 14.7% vs prior month
- Institutions 24.63%
- Insiders 6.95%
- Other investors 68.42%
AMTX top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 5.50% | 4.0M | $5.8M | +3.3M (+527.0%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 4.14% | 3.0M | $4.4M | +356,586 (+13.5%) | June 30, 2026 |
| 3 | Geode Capital Management, LLC | 2.38% | 1.7M | $2.5M | +989,419 (+135.4%) | June 30, 2026 |
| 4 | Grantham, Mayo, Van Otterloo & Co., LLC | 1.47% | 1.1M | $1.6M | +14,300 (+1.4%) | June 30, 2026 |
| 5 | State Street Corp | 1.01% | 726K | $1.1M | +424,300 (+140.5%) | June 30, 2026 |
| 6 | D. E. Shaw & Co LP | 0.86% | 623K | $909,621 | +77,599 (+14.2%) | June 30, 2026 |
| 7 | Northern Trust Corp | 0.70% | 508K | $741,664 | +372,755 (+275.6%) | June 30, 2026 |
| 8 | Vanguard Portfolio Management, LLC | 0.61% | 442K | $645,850 | +442,363 (0.0%) | June 30, 2026 |
| 9 | Vanguard Fiduciary Trust Co | 0.61% | 439K | $640,851 | +60,836 (+16.1%) | June 30, 2026 |
| 10 | Susquehanna International Group, LLP | 0.56% | 401K | $585,054 | +19,780 (+5.2%) | June 30, 2026 |
| 11 | Millennium Management LLC | 0.55% | 396K | $578,748 | −20,418 (−4.9%) | June 30, 2026 |
| 12 | Marshall Wace Asset Management Ltd | 0.41% | 299K | $436,248 | −580,883 (−66.0%) | June 30, 2026 |
| 13 | Citadel Advisors Llc | 0.37% | 267K | $390,271 | −202,406 (−43.1%) | June 30, 2026 |
| 14 | Two Sigma Investments LLC | 0.37% | 267K | $390,118 | −113,044 (−29.7%) | June 30, 2026 |
| 15 | CIBC Bancorp USA Inc. | 0.35% | 254K | $370,663 | +3,579 (+1.4%) | June 30, 2026 |
| 16 | 683 Capital Management LLC | 0.33% | 236K | $343,913 | — | March 31, 2026 |
| 17 | The Goldman Sachs Group Inc | 0.28% | 200K | $291,563 | +2,152 (+1.1%) | June 30, 2026 |
| 18 | HAMILTON CAPITAL PARTNERS, LLC | 0.27% | 195K | $285,157 | +195,313 (0.0%) | June 30, 2026 |
| 19 | Charles Schwab Investment Management Inc | 0.27% | 195K | $285,120 | +195,288 (0.0%) | June 30, 2026 |
| 20 | Bank of New York Mellon Corp | 0.24% | 172K | $251,567 | +172,306 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 6.7M shares and 4 cut 917K.
AMTX top mutual fund and ETF holders
19 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.93% | 2.1M | $3.1M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.17% | 1.6M | $2.3M | −18,048 (−1.1%) | September 30, 2026 |
| 3 | Fidelity Small Cap Index | 0.96% | 696K | $1.0M | −858 (−0.1%) | July 31, 2026 |
| 4 | iShares Russell 2000 Value ETF | 0.66% | 479K | $699,280 | +726 (+0.2%) | September 30, 2026 |
| 5 | GMO Resources III | 0.63% | 455K | $664,183 | — | June 30, 2026 |
| 6 | Vanguard Russell 2000 ETF | 0.52% | 375K | $547,720 | +1,730 (+0.5%) | September 30, 2026 |
| 7 | Fidelity Extended Market Index | 0.46% | 331K | $482,758 | −1,777 (−0.5%) | August 31, 2026 |
| 8 | iShares Micro-Cap ETF | 0.29% | 208K | $303,684 | −1,435 (−0.7%) | September 30, 2026 |
| 9 | GMO Climate Change III | 0.23% | 167K | $243,781 | — | June 30, 2026 |
| 10 | Schwab Small Cap Index | 0.22% | 158K | $230,822 | — | August 31, 2026 |
| 11 | Fidelity Total Market Index | 0.17% | 126K | $184,074 | — | August 31, 2026 |
| 12 | iShares Russell 2000 Small-Cap Idx Instl | 0.17% | 121K | $176,923 | — | August 31, 2026 |
| 13 | iShares Russell 2000 Growth ETF | 0.16% | 118K | $172,464 | −150 (−0.1%) | September 30, 2026 |
| 14 | GMO Climate Change Trsn Invm A GBP Acc | 0.15% | 110K | $161,185 | — | June 30, 2026 |
| 15 | Russell Inv US Small Cap Equity Y | 0.14% | 104K | $151,739 | — | August 31, 2026 |
| 16 | Fidelity Series Total Market Index | 0.14% | 103K | $149,958 | +9,628 (+10.3%) | August 31, 2026 |
| 17 | Nuveen Small Cap Blend Idx R6 | 0.12% | 87K | $126,318 | — | August 31, 2026 |
| 18 | EA Bridgeway Ultra-Small Company Mkt ETF | 0.12% | 86K | $124,830 | — | September 30, 2026 |
| 19 | Goldman Sachs Absolute Ret Trckr Instl | 0.11% | 78K | $114,131 | +47,190 (+152.3%) | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
AMTX insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-08-14 | Francis P Barton | Sell | $2.53 | 26,452 | $66,924 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
AMTX shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns AMTX
Institutional investors own 24.6% of Aemetis's shares and insiders 6.95%. The largest holder is BlackRock Inc with 5.50% of the shares (4.0M), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 4 reduced their stake in the latest filings. Short interest is 11.70% of the float, or 9.30 days of average trading volume. The share count rose 219.4% since 2014.
Related: AMTX analyst forecast, AMTX key metrics. See the AMTX stock overview for the latest quote and news.
AMTX ownership FAQ
Who owns the most Aemetis stock?
The largest shareholders of Aemetis are BlackRock Inc (5.50%), Vanguard Capital Management, LLC (4.14%), Geode Capital Management, LLC (2.38%), Grantham, Mayo, Van Otterloo & Co., LLC (1.47%), State Street Corp (1.01%).
What percentage of Aemetis is owned by institutions?
Institutions hold 24.6% of Aemetis's shares outstanding; insiders hold 6.95%.
Which funds own Aemetis?
The largest fund holders of Aemetis are Vanguard MStar Total Stk Mkt Idx Invest (2.93%), iShares Russell 2000 ETF (2.17%), Fidelity Small Cap Index (0.96%), iShares Russell 2000 Value ETF (0.66%), GMO Resources III (0.63%).
What is Aemetis's short interest?
7.9M shares of Aemetis were sold short, 11.70% of the float; at the average daily volume it would take 9.30 days to cover.
Are insiders buying or selling Aemetis?
Of the latest 1 reported insider transactions in Aemetis (since August 14, 2025), 0 were purchases and 1 were sales.
How many shares of Aemetis are outstanding?
Aemetis has 72.2M shares outstanding, of which 67.2M are in the public float.