Business Summary
Soluna Holdings, Inc. (SLNH) is a developer and operator of renewable-powered digital infrastructure built around its proprietary Renewable Computing™ model. The company co-locates data centers directly with wind, solar, and hydroelectric power generation assets to capture stranded, curtailed energy — power that would otherwise go to waste — and convert it into scalable, low-cost computing capacity. Its proprietary operating system, MaestroOS™, continuously optimizes energy dispatch, workload orchestration, grid demand signals, and power economics across all facilities.
Products & Services
- Proprietary Bitcoin Mining: Mining on company-owned hardware in co-located data centers; ~45% of 2024 revenue
- Bitcoin Hosting: Colocation and hosting services for third-party hyperscale Bitcoin miners; fixed-fee or profit-share contracts, typically 12–24 months
- HPC/AI Colocation: GPU cloud hosting for companies training LLMs, fine-tuning AI models, and running compute-intensive HPC workloads
- Demand Response Services: Curtailment capacity sold to ERCOT and other grid operators; provides...
AI-generated summary of Item 1 (Business) from the 10-K filed Mar 31, 2025 — View filing on SEC.gov. May contain errors — refer to the filing for authoritative information.
Across SEC filings
Institutional holders · 13F
Q2 2026| Largest holders | Reported value |
|---|---|
| GEODE CAPITAL MANAGEMENT LLC | $14.0M |
| BlackRock Inc | $11.2M |
| Nuveen LLC | $7.5M |
| Vident Advisory LLC | $7.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $6.3M |
Annual results · 10-K
Fiscal 2025- Revenue
- $29.7M
- Net loss
- -$53.4M
As reported in the fiscal 2025 annual report.
Funds & ETFs · N-PORT
71 funds| Fund | Value | % of fund |
|---|---|---|
| Valkyrie Bitcoin Miners ETF WGMI | $6.9M | 2.01% |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VTI | $5.1M | < 0.01% |
| iShares Russell 2000 ETF IWM | $4.1M | < 0.01% |
| Fidelity Crypto Industry and Digital Payments ETF FDIG | $2.1M | 0.81% |
| College Retirement Equities Fund - Total Global Stock Account | $1.5M | < 0.01% |
| iShares Russell 2000 Value ETF IWN | $1.4M | < 0.01% |
| Fidelity Small Cap Index Fund | $1.4M | < 0.01% |
| Nuveen Equity Index Fund | $1.1M | < 0.01% |
| VANGUARD EXTENDED MARKET INDEX FUND | $1.1M | < 0.01% |
| Global X Blockchain ETF BKCH | $951.5K | 0.34% |
71 funds reported holding $30.5M in total on their latest public Form N-PORT reports, the most recent dated August 2026. Security record
Insider trades · Form 4
Latest filings
- Jessica L. Thomas 2026-09-24 Sell
- William P Phelan 2026-09-04 Sell
- Mary Jennifer Oreilly 2026-09-17 -
- Jessica L. Thomas 2026-09-17 -
- John Belizaire 2026-09-01 Sell
5%+ holders · 13D/G
3 filers| Filer | % of class | Filed |
|---|---|---|
| BUGBEE ROBERT L 13G | 9.8% | 2026-08-05 |
| Generate Strategic Credit Master Fund I-B L P 13G | 10.0% | 2025-09-18 |
| YA II PN Ltd 13G | 10.0% | 2025-02-06 |
Latest Schedule 13D or 13G from each filer; stakes a filer has reported closed are left out.