Alx Oncology Holdings ALXO Institutional Ownership

Updated Oct 11, 2026

Alx Oncology Holdings Inc (NASDAQ:ALXO) had 95 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

• These investors held 76.11% of Alx Oncology Holdings' outstanding shares at the end of Q2 2026, up from 70.07% in Q1 2026.
• Total shares held in ALXO rose 11.59% from Q1 2026; the number of holders rose 61.02% from Q2 2025.
• Looking at the 95 holders of ALXO individually, 68 added to their positions, 10 reduced their stakes and 17 left their positions unchanged.
• In total, institutional investors held 105.2Mn shares of Alx Oncology Holdings at the end of Q2 2026, up 10.93Mn from the prior quarter and up 76.24Mn from a year earlier.
• As of June 30, 2026, the biggest holder of Alx Oncology Holdings was Ra Capital Management, L.P. with 13.01Mn shares, or 9.41% of shares outstanding.
• Among existing holders, the largest additions to Alx Oncology Holdings in Q2 2026 came from BlackRock, Inc. (+6.95Mn shares), Geode Capital Management, LLC (+2.29Mn shares), State Street Corp (+1.32Mn shares), JPMorgan Chase & Co (+1.04Mn shares) and Northern Trust Corp (+798.71K shares).
• Among holders that kept a stake in Alx Oncology Holdings, the biggest sellers in Q2 2026 were TCG Crossover Management, LLC (-7.36Mn shares), Susquehanna International Group, LLP (-1.21Mn shares), Marshall Wace, LLP (-685.72K shares), Redmile Group, LLC (-571.68K shares) and Bank of America Corp (-501.75K shares).
• Per Business Quant data, the 10 largest holders of Alx Oncology Holdings at the end of Q2 2026 were Ra Capital Management, L.P. (13.01Mn shares), venBio Partners LLC (12.88Mn shares), BlackRock, Inc. (7.4Mn shares), Redmile Group, LLC (7.39Mn shares), Blackstone Inc. (6.59Mn shares), Driehaus Capital Management LLC (6.03Mn shares), Silverarc Capital Management, LLC (5.74Mn shares), TCG Crossover Management, LLC (5.66Mn shares), Vanguard Capital Management LLC (4.97Mn shares) and Vivo Capital, LLC (3.18Mn shares).