Isabella Bank ISBA Institutional Ownership

Ownership Summary

Isabella Bank Corp (NASDAQ:ISBA) has 43 institutional investors with active 13F positions as of March 2026.

• These investors collectively held 0.8% of Isabella Bank's outstanding shares in March 2026, up from 0.6% in December 2025.
• They increased total shares held in Isabella Bank by 127.06% from the prior quarter, while the number of investors in ISBA increased 4200.0% year over year.
• Activity in ISBA broke down as 25 buyers, 7 sellers, and 11 unchanged among 43 total holders.
• Combined, these investors held 1.0Mn shares in ISBA for March 2026, up by 561.76K shares quarter on quarter, and up 1.0Mn shares year over year.
• VANGUARD CAPITAL MANAGEMENT LLC holds the largest position in ISBA at 274.05K shares as of March 31, 2026, or 0.22% of shares outstanding.
• The biggest buyers of Isabella Bank for the quarter ending March 2026 included VANGUARD CAPITAL MANAGEMENT LLC (274.05K), MILLENNIUM MANAGEMENT LLC (94.25K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (42.3K), VANGUARD FIDUCIARY TRUST CO (40.75K), MARSHALL WACE, LLP (29.96K).
• The largest sellers of Isabella Bank for the quarter ending March 2026 were Goldman Sachs Group Inc (18.95K), Barclays Plc (2.33K), JANE STREET GROUP, LLC (1.25K), FourThought Financial Partners, LLC (1.0K), BlackRock, Inc. (571).
• According to Business Quant data, leading holders of ISBA for March 2026 are VANGUARD CAPITAL MANAGEMENT LLC (274.05K), MILLENNIUM MANAGEMENT LLC (107.36K), BlackRock, Inc. (100.2K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (94.74K), GEODE CAPITAL MANAGEMENT, LLC (80.4K), MARSHALL WACE, LLP (53.68K), VANGUARD FIDUCIARY TRUST CO (40.75K), HARBOUR INVESTMENTS, INC. (27.02K), State Street Corp (22.05K), Qube Research & Technologies Ltd (21.53K).