Ranked by reported Q1 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 | MARSHALL WACE, LLP | 3.3M | $16.2M | +189.2% | 4.318% | 0.02% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 3.2M | $15.4M | β | 4.115% | 0.00% |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2.9M | $13.8M | +30.2% | 3.688% | 0.00% |
| 4 | TWO SIGMA INVESTMENTS, LP | 2.0M | $9.7M | +139.1% | 2.596% | 0.01% |
| 5 | MILLENNIUM MANAGEMENT LLC | 1.9M | $9.3M | +418.5% | 2.479% | 0.01% |
| 6 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.8M | $8.7M | +67.9% | 2.316% | 0.00% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 1.7M | $8.1M | +9.8% | 2.165% | 0.01% |
| 8 | BlackRock, Inc. | 1.3M | $6.3M | +10.1% | 1.679% | 0.00% |
| 9 | Hillsdale Investment Management Inc. | 1.0M | $4.8M | +590.1% | 1.295% | 0.13% |
| 10 | Qube Research & Technologies Ltd | 970K | $4.7M | +123.2% | 1.255% | 0.01% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 891K | $4.3M | +2.6% | 1.153% | 0.00% |
| 12 | CREATIVE FINANCIAL DESIGNS INC /ADV | 770K | $3.7M | -3.5% | 0.996% | 0.23% |
| 13 | CITADEL ADVISORS LLC | 732K | $3.5M | β | 0.948% | 0.00% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 659K | $3.2M | +74.7% | 0.853% | 0.00% |
| 15 | GOLDMAN SACHS GROUP INC | 602K | $2.9M | -15.9% | 0.778% | 0.00% |
| 16 | BANK OF AMERICA CORP /DE/ | 550K | $2.7M | +1441.7% | 0.712% | 0.00% |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 488K | $2.4M | +8.2% | 0.631% | 0.05% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 474K | $2.3M | β | 0.614% | 0.00% |
| 19 | Walleye Capital LLC | 465K | $2.3M | β | 0.602% | 0.01% |
| 20 | Empowered Funds, LLC | 411K | $2.0M | +9.9% | 0.532% | 0.01% |
| 21 | Connor, Clark & Lunn Investment Management Ltd. | 385K | $1.9M | +166.1% | 0.498% | 0.00% |
| 22 | Peapod Lane Capital LLC | 406K | $1.8M | -67.3% | 0.526% | 1.49% |
| 23 | STATE STREET CORP | 373K | $1.8M | +3.8% | 0.482% | 0.00% |
| 24 | MORGAN STANLEY | 354K | $1.7M | +147.3% | 0.458% | 0.00% |
| 25 | Point72 Asset Management, L.P. | 335K | $1.6M | +27.9% | 0.433% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in ALTO β a direct measure of their conviction.
Filings activity in ALTO during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new ALTO position in Q1 2026
Institutions that fully closed their ALTO position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 100 | +18% | 35.11% | +20.07 pp | $155M | +133% |
| Q4 2025 | 85 | +39% | 15.04% | +11.44 pp | $66M | +318% |
| Q3 2025 | 61 | 1.6% | 3.60% | 0.59 pp | $16M | 14% |
| Q2 2025 | 62 | 4.6% | 4.19% | 0.58 pp | $18M | 12% |
| Q1 2025 | 65 | 13% | 4.77% | 2.71 pp | $21M | 36% |
| Q4 2024 | 75 | 1.3% | 7.48% | 0.55 pp | $33M | 6.8% |
| Q3 2024 | 76 | 6.2% | 8.03% | 0.74 pp | $35M | 8.4% |
| Q2 2024 | 81 | β | 8.77% | β | $39M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal 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 Q1 2026 13F filings, institutional ownership of Alto Ingredients, Inc. stands at 35.1%, held across 100 reporting institutions.
MARSHALL WACE, LLP is the largest reported institutional holder of ALTO, with approximately 3,337,356 shares worth $0.02B as of Q1 2026.
Yes β 6 widely-followed marquee investors appear among the top 25 institutional holders of ALTO, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC, RENAISSANCE TECHNOLOGIES LLC, CITADEL ADVISORS LLC.
Our composite Smart Money Score for ALTO is 82 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
29 institutions opened new positions in ALTO during Q1 2026, while 14 fully exited. 63 added to existing positions and 6 trimmed.
ALTO institutional ownership rose by 20.07 percentage points quarter-over-quarter, with a net change of +15 holders.
The top 10 institutions account for 62.7% of all reported 13F value in ALTO, and the top 25 account for 87.3%.
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