Soluna Holdings, Inc (SLNH) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

21,014,035Shares Outstanding

10,492Shares held by institutions

$8,918Value of institutional holdings

58.20%Institutional ownership %

977.20%Shares Changed QoQ

43No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 43 institutions have reported a stake in Soluna Holdings, Inc (NASDAQ:SLNH) as of December 2025, according to recent 13F filings with the SEC.

The collective stake of institutional investors in Soluna Holdings moved to 58.2% in December 2025, a shift up from the 16.4% reported for September 2025.
Institutional share ownership changed by 977.20% QoQ, while the number of institutional owners saw an increase of 79.17% YoY.
Among the 43 institutional holders of Soluna Holdings, 34 added to their stakes while 5 trimmed their positions and 4 held steady.
Collectively, institutional investors increased their stake in Soluna Holdings to 12.23Mn shares as of December 2025, a change that is up by 11.09Mn shares quarter on quarter and up 11.83Mn shares year over year.
HEIGHTS CAPITAL MANAGEMENT, INC's holding of 2.04Mn shares as of December 31, 2025 makes it the primary institutional investor in Soluna Holdings, owning 9.73% of the stock.
Among the most significant buyers of Soluna Holdings during December 2025 were HEIGHTS CAPITAL MANAGEMENT, INC (2.04Mn), ARDSLEY ADVISORY PARTNERS LP (1.73Mn), GEODE CAPITAL MANAGEMENT, LLC (1.67Mn), UBS Group AG (1.07Mn), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (691.31K).
Leading sellers of Soluna Holdings stock in December 2025 included MILLENNIUM MANAGEMENT LLC (175.40K), SBI Securities Co., Ltd. (4.41K), LPL Financial LLC (2.35K), Allworth Financial LP (1.60K), Federation des caisses Desjardins du Quebec (2).
The top 10 institutional holders of Soluna Holdings for the quarter ending December 2025 included HEIGHTS CAPITAL MANAGEMENT, INC (2.04Mn), GEODE CAPITAL MANAGEMENT, LLC (1.89Mn), ARDSLEY ADVISORY PARTNERS LP (1.73Mn), UBS Group AG (1.10Mn), VANGUARD GROUP INC (954.92K), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (691.31K), JANE STREET GROUP, LLC (665.65K), BlackRock, Inc. (516.51K), Intrinsic Edge Capital Management LLC (270.00K), Diametric Capital, LP (255.95K).

43 Institutional Holders

10,492 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
HEIGHTS CAPITAL MANAGEMENT, INC	31 Dec, 2025	2,043,964	2,043,964	0.00%	$2,391,438.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,889,533	1,668,801	756.03%	$2,210,903.00
ARDSLEY ADVISORY PARTNERS LP	31 Dec, 2025	1,725,000	1,725,000	0.00%	$2,018,250.00
UBS Group AG	31 Dec, 2025	1,103,185	1,070,883	3,315.22%	$1,290,727.00
VANGUARD GROUP INC	31 Dec, 2025	954,920	619,644	184.82%	$1,117,256.00
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	31 Dec, 2025	691,314	691,314	0.00%	$808,837.00
JANE STREET GROUP, LLC	31 Dec, 2025	665,649	604,540	989.28%	$778,809.00
BlackRock, Inc.	31 Dec, 2025	516,509	514,539	26,118.73%	$604,316.00
Intrinsic Edge Capital Management LLC	31 Dec, 2025	270,000	270,000	0.00%	$315,900.00
Diametric Capital, LP	31 Dec, 2025	255,947	255,947	0.00%	$299,457.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	255,942	255,942	0.00%	$299,452.00
MARSHALL WACE, LLP	31 Dec, 2025	232,600	232,600	0.00%	$272,142.00
MORGAN STANLEY	31 Dec, 2025	228,318	228,114	111,820.59%	$267,132.00
Quantbot Technologies LP	31 Dec, 2025	195,113	195,113	0.00%	$228,282.00
STATE STREET CORP	31 Dec, 2025	188,376	89,582	90.68%	$220,400.00
Quadrature Capital Ltd	31 Dec, 2025	170,733	170,733	0.00%	$199,758.00
XTX Topco Ltd	31 Dec, 2025	128,294	128,294	0.00%	$150,104.00
NORTHERN TRUST CORP	31 Dec, 2025	102,915	59,449	136.77%	$120,411.00
Fiduciary Alliance LLC	31 Dec, 2025	87,845	49,845	131.17%	$102,779.00
PRELUDE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	79,317	79,317	0.00%	$92,801.00

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