Alto Ingredients ALTO Institutional Ownership

Updated Oct 11, 2026

Alto Ingredients, Inc. (NASDAQ:ALTO) was reported as a holding by 134 institutional investors in 13F filings for the quarter ended June 30, 2026.

• These investors held 46.28% of Alto Ingredients' outstanding shares at the end of Q2 2026, up from 40.34% in Q1 2026.
• Total shares held in ALTO rose 14.20% from Q1 2026; the number of holders rose 119.67% from Q2 2025.
• Among the 134 holders of Alto Ingredients, 97 added to their positions, 25 reduced their stakes and 12 left their positions unchanged.
• In total, institutional investors held 35.91Mn shares of Alto Ingredients at the end of Q2 2026, up 4.47Mn from the prior quarter and up 19.01Mn from a year earlier.
• As of June 30, 2026, BlackRock, Inc. held the largest stake in Alto Ingredients with 5.5Mn shares, or 7.08% of shares outstanding.
• Among existing holders, the largest additions to Alto Ingredients in Q2 2026 came from BlackRock, Inc. (+4.2Mn shares), Acadian Asset Management LLC (+1.46Mn shares), Geode Capital Management, LLC (+1.09Mn shares), State Street Corp (+857.33K shares) and Hillsdale Investment Management Inc. (+703K shares).
• The biggest cuts to ALTO positions during Q2 2026 came from Millennium Management LLC (-1.74Mn shares), Susquehanna International Group, LLP (-1.07Mn shares), Two Sigma Investments, LP (-807.87K shares), Qube Research & Technologies Ltd (-795.37K shares) and Bank of America Corp (-507.58K shares).
• According to Business Quant data, the leading holders of ALTO for Q2 2026 were BlackRock, Inc. (5.5Mn shares), Vanguard Capital Management LLC (3.21Mn shares), Arrowstreet Capital, Limited Partnership (2.28Mn shares), Acadian Asset Management LLC (2.05Mn shares), Geode Capital Management, LLC (1.98Mn shares), Hillsdale Investment Management Inc. (1.7Mn shares), Renaissance Technologies LLC (1.52Mn shares), State Street Corp (1.23Mn shares), Two Sigma Investments, LP (1.2Mn shares) and Dimensional Fund Advisors LP (1.14Mn shares).