Alto Ingredients ALTO Institutional Ownership

Ownership Summary

Alto Ingredients, Inc. (NASDAQ:ALTO) showed up in the 13F filings of 101 institutional investors as of March 2026.

• These investors held 42.0% of outstanding shares in March 2026, up from 31.1% in December 2025.
• They increased total shares held in Alto Ingredients by 81.3% from the prior quarter, while the number of investors in ALTO increased 50.75% year over year.
• Among the 101 funds, 70 bought more Alto Ingredients shares, 18 sold down, and 13 held their ground.
• Altogether, these fund groups held 31.44Mn shares in ALTO by March 2026, up by 14.1Mn shares quarter on quarter, and up 11.54Mn shares year over year.
• MARSHALL WACE, LLP holds the largest position in ALTO at 3.34Mn shares as of March 31, 2026, or 4.46% of shares outstanding.
• Top purchasers of ALTO stock for the quarter ending March 2026 included VANGUARD CAPITAL MANAGEMENT LLC (3.18Mn), MARSHALL WACE, LLP (2.18Mn), MILLENNIUM MANAGEMENT LLC (1.55Mn), TWO SIGMA INVESTMENTS, LP (1.17Mn), Hillsdale Investment Management Inc. (855.7K).
• Top sellers of ALTO stock for the quarter ending March 2026 included Peapod Lane Capital LLC (837.81K), Goldman Sachs Group Inc (828.81K), GSA CAPITAL PARTNERS LLP (119.88K), HighTower Advisors, LLC (100.0K), Truffle Hound Capital, LLC (65.0K).
• Per Business Quant, the top 10 investors in ALTO for the quarter ending March 2026 include MARSHALL WACE, LLP (3.34Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.18Mn), TWO SIGMA INVESTMENTS, LP (2.01Mn), MILLENNIUM MANAGEMENT LLC (1.92Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.79Mn), RENAISSANCE TECHNOLOGIES LLC (1.67Mn), BlackRock, Inc. (1.3Mn), JANE STREET GROUP, LLC (1.29Mn), SUSQUEHANNA INTERNATIONAL GROUP, LLP (1.09Mn), Hillsdale Investment Management Inc. (1.0Mn).