Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in ALTO held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 5.5M | $31.3M | +323.3% | 7.092% | 0.00% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 3.2M | $18.3M | +1.0% | 4.146% | 0.00% |
| 3 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.3M | $13.0M | +27.4% | 2.943% | 0.01% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 2.0M | $11.3M | +122.2% | 2.555% | 0.00% |
| 5 | Hillsdale Investment Management Inc. | 1.7M | $9.7M | +70.3% | 2.199% | 0.22% |
| 6 | RENAISSANCE TECHNOLOGIES LLC | 1.5M | $8.7M | -9.3% | 1.960% | 0.01% |
| 7 | STATE STREET CORP | 1.2M | $7.0M | +229.9% | 1.588% | 0.00% |
| 8 | TWO SIGMA INVESTMENTS, LP | 1.2M | $6.8M | -40.3% | 1.547% | 0.00% |
| 9 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.2M | $6.8M | -57.9% | 1.547% | 0.00% |
| 10 | DIMENSIONAL FUND ADVISORS LP | 1.1M | $6.5M | +73.5% | 1.476% | 0.00% |
| 11 | Connor, Clark & Lunn Investment Management Ltd. | 856K | $4.9M | +122.3% | 1.104% | 0.01% |
| 12 | JACOBS LEVY EQUITY MANAGEMENT, INC | 827K | $4.7M | +333.3% | 1.068% | 0.02% |
| 13 | NORTHERN TRUST CORP | 784K | $4.5M | +275.6% | 1.012% | 0.00% |
| 14 | CREATIVE FINANCIAL DESIGNS INC /ADV | 615K | $3.5M | -20.1% | 0.794% | 0.17% |
| 15 | PANAGORA ASSET MANAGEMENT INC | 584K | $3.3M | — | 0.754% | 0.01% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 575K | $3.3M | +212.7% | 0.742% | 0.00% |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 520K | $3.0M | +6.6% | 0.671% | 0.05% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 508K | $2.9M | +7.1% | 0.656% | 0.00% |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | 497K | $2.8M | — | 0.641% | 0.00% |
| 20 | GOLDMAN SACHS GROUP INC | 490K | $2.8M | -18.5% | 0.633% | 0.00% |
| 21 | BNP PARIBAS FINANCIAL MARKETS | 480K | $2.7M | +122.0% | 0.619% | 0.00% |
| 22 | ALGERT GLOBAL LLC | 477K | $2.7M | +294.5% | 0.616% | 0.03% |
| 23 | CITADEL ADVISORS LLC | 467K | $2.7M | -36.2% | 0.603% | 0.00% |
| 24 | JANE STREET GROUP, LLC | 452K | $2.6M | -68.3% | 0.583% | 0.00% |
| 25 | Empowered Funds, LLC | 443K | $2.5M | +7.8% | 0.572% | 0.01% |
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 ALTO — a direct measure of their conviction.
Filings activity in ALTO during Q2 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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 134 | +30% | 49.05% | +3.82 pp | $202M | +23% |
| Q1 2026 | 103 | +20% | 45.23% | +14.06 pp | $164M | +143% |
| Q4 2025 | 86 | +37% | 31.17% | +9.64 pp | $68M | +308% |
| Q3 2025 | 63 | +1.6% | 21.53% | 1.26 pp | $17M | 10% |
| Q2 2025 | 62 | 4.6% | 22.79% | 3.04 pp | $18M | 12% |
| Q1 2025 | 65 | 13% | 25.83% | 3.70 pp | $21M | 36% |
| Q4 2024 | 75 | 1.3% | 29.53% | 1.13 pp | $33M | 6.8% |
| Q3 2024 | 76 | — | 30.66% | — | $35M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as a key fundamental indicator because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 12, 2026 | NATHAN GILBERT E | Buy | 20K | $4.61 | $92K |
Quick answers to the most common questions about buying ALTO stock.
Based on Q2 2026 13F filings, institutional ownership of Alto Ingredients, Inc. stands at 49.0%, held across 134 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of ALTO, with approximately 5,495,025 shares worth $0.03B as of Q2 2026.
Yes — 5 widely-followed marquee investors appear among the top 25 institutional holders of ALTO, including RENAISSANCE TECHNOLOGIES LLC, TWO SIGMA INVESTMENTS, LP, SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC, JANE STREET GROUP, LLC.
Our composite Smart Money Score for ALTO is 87 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
53 institutions opened new positions in ALTO during Q2 2026, while 23 fully exited. 53 added to existing positions and 25 trimmed.
ALTO institutional ownership rose by 3.82 percentage points quarter-over-quarter, with a net change of +31 holders.
The top 10 institutions account for 59.0% of all reported 13F value in ALTO, and the top 25 account for 83.2%.
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.
Alto Ingredients, Inc. (ALTO) Institutional Ownership