Onterris ONT Institutional Ownership

Updated Nov 4, 2026

Onterris, Inc. (NYSE:ONT) was held by 158 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• Total holdings of ONT shares rose 11.32% from Q1 2026, and the holder count fell 0.63% from Q2 2025.
• Of the 158 holders, 93 added to their positions, 48 reduced their stakes and 17 left their positions unchanged in Q2 2026.
• The aggregate institutional position in Onterris was 37.69Mn shares at the end of Q2 2026, up 3.83Mn from the prior quarter and up 3.94Mn from a year earlier.
• As of June 30, 2026, the biggest holder of Onterris was BlackRock, Inc. with 3.27Mn shares.
• The biggest increases in ONT positions during Q2 2026 came from FMR LLC (+875.02K shares), UBS Group AG (+705.54K shares), Nomura Asset Management International Inc. (+565.61K shares), AllianceBernstein L.P. (+359.21K shares) and ArrowMark Colorado Holdings LLC (+199.54K shares).
• The largest position reductions in ONT for Q2 2026 were by Algert Global LLC (-540.58K shares), Avalon Trust Co (-385.32K shares), UBS Asset Management Americas (-263.53K shares), Summit Creek Advisors LLC (-236.45K shares) and Nuveen, LLC (-113.75K shares).
• Per Business Quant data, the 10 largest holders of Onterris at the end of Q2 2026 were BlackRock, Inc. (3.27Mn shares), BAMCO Inc (2.14Mn shares), Nomura Asset Management International Inc. (2.1Mn shares), Goldman Sachs Group Inc (1.93Mn shares), Corvex Management LP (1.77Mn shares), AllianceBernstein L.P. (1.49Mn shares), Vanguard Capital Management LLC (1.45Mn shares), FMR LLC (1.44Mn shares), UBS Asset Management Americas (1.25Mn shares) and Nomura Holdings Inc (1.25Mn shares).