Ioneer IONR Institutional Ownership

Updated Oct 11, 2026

ioneer Ltd (NASDAQ:IONR) counted 34 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

• Collectively, these holders controlled 3.86% of Ioneer's outstanding shares in Q2 2026, down from 4.29% in Q1 2026.
• Total holdings of IONR shares fell 10.09% from Q1 2026, and the holder count rose 240.00% from Q2 2025.
• Of these 34 holders, 20 added to their positions, 5 reduced their stakes and 9 left their positions unchanged.
• The aggregate institutional position in Ioneer was 2.58Mn shares at the end of Q2 2026, down 289.59K from the prior quarter and up 2.54Mn from a year earlier.
• Invesco Ltd. held the largest position in IONR at 1.87Mn shares as of June 30, 2026, or 2.80% of shares outstanding.
• Among holders that already owned Ioneer, the biggest buyers in Q2 2026 were Goldman Sachs Group Inc (+128.17K shares), Cambridge Investment Research Advisors, Inc. (+18.75K shares), Morgan Stanley (+6.75K shares), Susquehanna International Group, LLP (+4.35K shares) and GAMMA Investing LLC (+2.48K shares).
• Holders that trimmed the most shares of Ioneer in Q2 2026 while keeping a position were Invesco Ltd. (-363.38K shares), UBS Group AG (-91K shares), Citigroup Inc (-86.96K shares), Integrated Wealth Concepts LLC (-46.04K shares) and Millennium Management LLC (-22.09K shares).
• Business Quant data shows the 10 biggest positions in Ioneer as of Q2 2026 were held by Invesco Ltd. (1.87Mn shares), Goldman Sachs Group Inc (166.4K shares), Integrated Wealth Concepts LLC (142.52K shares), Cambridge Investment Research Advisors, Inc. (115.29K shares), GK Wealth Management LLC (32.03K shares), Susquehanna International Group, LLP (28.82K shares), Vanguard Personalized Indexing Management, LLC (25.38K shares), King Luther Capital Management Corp (25K shares), HRT Financial LP (23.16K shares) and XTX Topco Ltd (20.74K shares).