Ribbon Communications Inc. (RBBN) Institutional Ownership

Ownership Summary

The institutional landscape for Ribbon Communications Inc. (NASDAQ:RBBN) includes 4 filers as of the latest reporting cycle ending December 2025.

• These investors collectively held 0.0% of the company's total shares outstanding in December 2025, down from 75.0% in September 2025.
• On a quarter-over-quarter basis, institutional holdings shifted by 14.76%, with a year-over-year a decrease of 96.97% in the count of filers.
• The latest 13F cycle for Ribbon Communications reveals that of 4 total investors, 2 funds grew their exposure, whereas 2 reduced theirs and 0 made no changes.
• This class of investors increased its holdings in Ribbon Communications to 81.95K shares for the 13F-cycle ending December 2025, up by 10.54K shares quarter on quarter, and down 125.96Mn shares year over year.
• SG Americas Securities, LLC continues to be the largest institutional holder of Ribbon Communications as of December 31, 2025, with a position of 41.54K shares, representing 0.02% of the company's outstanding stock.
• Among the most significant buyers of Ribbon Communications during December 2025 were SG Americas Securities, LLC (21.04K), GAMMA Investing LLC (42).
• Leading sellers of Ribbon Communications stock in December 2025 included Assenagon Asset Management S.A. (10.29K), True Wealth Design, LLC (253).
• The top 4 institutional holders of Ribbon Communications for the quarter ending December 2025 included SG Americas Securities, LLC (41.54K), Assenagon Asset Management S.A. (40.35K), GAMMA Investing LLC (52), True Wealth Design, LLC (3).