Oncology Institute, Inc. (TOI) Institutional Ownership

Ownership Summary

Oncology Institute, Inc. (NASDAQ:TOI) has 115 institutional investors with active 13F positions as of December 2025.

• Collectively, these holders controlled 39.5% of Oncology Institute's outstanding shares in December 2025, up from 35.6% in September 2025.
• They increased total shares held in Oncology Institute by 16.44% from last quarter, and the number of investors in TOI increased 259.38% annually.
• During the quarter, 74 of these 115 funds increased positions in TOI, 27 reduced exposure, and 14 held steady.
• Institutional investors collectively held 38.48Mn shares in Oncology Institute as of December 2025, up by 5.43Mn shares quarter on quarter, and up 23.74Mn shares year over year.
• As of December 31, 2025, BlackRock, Inc. held the largest stake in Oncology Institute with 4.42Mn shares, accounting for 4.53% of total shares outstanding.
• Leading buyers of Oncology Institute shares for the quarter ending December 2025 were VANGUARD CAPITAL MANAGEMENT LLC (3.48Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (862.84K), Ensign Peak Advisors, Inc (626.85K), CITADEL ADVISORS LLC (608.27K), BlackRock, Inc. (510.53K).
• Top sellers of TOI stock for the quarter ending December 2025 included CenterBook Partners LP (1.46Mn), BALYASNY ASSET MANAGEMENT L.P. (692.07K), JANE STREET GROUP, LLC (378.42K), LPL Financial LLC (209.82K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (202.28K).
• According to Business Quant data, leading holders of TOI for December 2025 are BlackRock, Inc. (4.42Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.48Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (3.36Mn), Kanen Wealth Management LLC (2.78Mn), JOSH ARNOLD INVESTMENT CONSULTANT, LLC (2.46Mn), BALYASNY ASSET MANAGEMENT L.P. (1.83Mn), GEODE CAPITAL MANAGEMENT, LLC (1.76Mn), WEXFORD CAPITAL LP (1.71Mn), CenterBook Partners LP (1.57Mn), State Street Corp (1.46Mn).