Soluna Holdings, Inc (SLNH) Institutional Ownership

Ownership Summary

Soluna Holdings, Inc (NASDAQ:SLNH) currently has 7 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• These investors collectively held 10.4% of the company's total shares outstanding in December 2025, down from 16.4% in September 2025.
• The company experienced a 419.99% quarterly change in institutional shares held, alongside a decrease of 70.83% in total owners annually.
• Among the 7 institutional holders of Soluna Holdings, 5 added to their stakes while 2 trimmed their positions and 0 held steady.
• The aggregate institutional position in Soluna Holdings now stands at 2.20Mn shares as of December 2025, after investors increased their holdings (up by 1.77Mn shares quarter on quarter which is up 1.80Mn shares year over year).
• The top institutional stake in Soluna Holdings as of December 31, 2025 belongs to UBS Group AG, which owns 1.10Mn shares, or 5.25% of the company.
• Among the most significant buyers of Soluna Holdings during December 2025 were UBS Group AG (1.07Mn), VANGUARD GROUP INC (619.64K), Fiduciary Alliance LLC (49.84K), MATAURO, LLC (23.71K), Sullivan Wood Capital Management LLC (15.00K).
• Leading sellers of Soluna Holdings stock in December 2025 included SBI Securities Co., Ltd. (4.41K), Allworth Financial LP (1.60K).
• The top 7 institutional holders of Soluna Holdings for the quarter ending December 2025 included UBS Group AG (1.10Mn), VANGUARD GROUP INC (954.92K), Fiduciary Alliance LLC (87.84K), MATAURO, LLC (23.71K), Sullivan Wood Capital Management LLC (15.00K), SBI Securities Co., Ltd. (8.99K), Allworth Financial LP (1.60K).