United Guardian Inc (UG) Institutional Ownership

Ownership Summary

United Guardian Inc (NASDAQ:UG) is held by 26 institutional investors per 13F filings through December 2025.

• Collectively, these holders controlled 20.5% of United Guardian's outstanding shares in December 2025, down from 21.7% in September 2025.
• They decreased total shares held in United Guardian by -3.0% from last quarter, and the number of investors in UG decreased 23.53% annually.
• Among the 26 funds, 6 bought more United Guardian shares, 10 sold down, and 10 held their ground.
• Altogether, these fund groups held 939.95K shares in UG by December 2025, down by 29.08K shares quarter on quarter, and down 90.67K shares year over year.
• RENAISSANCE TECHNOLOGIES LLC leads ownership in UG with 175.77K shares as of December 31, 2025, equal to 3.83% of outstanding shares.
• The largest buyers of United Guardian for the quarter ending December 2025 were VANGUARD CAPITAL MANAGEMENT LLC (128.34K), VANGUARD FIDUCIARY TRUST CO (18.38K), GAMCO INVESTORS, INC. ET AL (1.89K), Vanguard Global Advisers, LLC (1.55K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (1.54K).
• Top sellers of UG stock for the quarter ending December 2025 included RENAISSANCE TECHNOLOGIES LLC (10.88K), Rodgers Brothers Inc. (10.25K), DIMENSIONAL FUND ADVISORS LP (6.41K), FIRST MANHATTAN CO. LLC. (1.0K), Wells Fargo & Company/Mn (1).
• Business Quant data shows the 10 biggest positions in United Guardian as of December 2025 are held by RENAISSANCE TECHNOLOGIES LLC (175.77K), GAMCO INVESTORS, INC. ET AL (164.39K), VANGUARD CAPITAL MANAGEMENT LLC (128.34K), DIMENSIONAL FUND ADVISORS LP (68.54K), Rodgers Brothers Inc. (63.6K), Teton Advisors, LLC (53.76K), PARTHENON LLC (50.64K), GABELLI FUNDS LLC (38.0K), GEODE CAPITAL MANAGEMENT, LLC (36.61K), UNITED CAPITAL FINANCIAL ADVISORS, LLC (20.07K).