Who owns Soluna (SLNH)?
42 holders named in SEC filings declare between 34.3% and 42.2% of Soluna's shares outstanding, as of Sep 23, 2026. The largest are Michael Toporek (7.0%), BUGBEE ROBERT L (6.3%) and BlackRock (3.4%); the five largest hold 22.0% together. Another 72 institutions hold small positions worth 0.95%. At least 56.9% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 14.1% and sold 0.64% of the shares, a net purchase of 13.4%; 63 opened a position, 18 added, 5 reduced and 8 sold out. Biggest buyers: BlackRock (+7.5M shares) and Nuveen (+5.6M shares). Biggest sellers: Diametric Capital, LP (-442,942) and Renaissance Technologies (-382,677). Schedule 13D/G filings since Mar 31, 2026: BUGBEE ROBERT L raised its stake to 6.3% on Aug 5, 2026 and BlackRock, Inc. crossed 5% (3.4%) on Jun 30, 2026. Directors and officers, from their latest Form 4: Michael Toporek (7.0%), John Belizaire (2.9%) and Ryan Carver (1.3%). Over time, 97 managers declared Soluna in their 13F for Q2 2026, against 11 for Q4 2023: together at most 25.6% of the shares outstanding, against 0.03%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Michael Toporek | Form 4 | 7.0% | Jun 1, 2026 | — |
| BUGBEE ROBERT L | 13G | 6.3% | Aug 5, 2026 | — |
| BlackRock | 13F | 3.4% | Jun 30, 2026 | Q4 2023 |
| John Belizaire | Form 4 | 2.9% | Aug 26, 2026 | — |
| Vanguard | 13F | 2.4% | Jun 30, 2026 | Q3 2024 |
| Nuveen | 13F | 2.3% | Jun 30, 2026 | Q2 2026 |
| Vident Advisory, LLC | 13F | 2.1% | Jun 30, 2026 | Q4 2025 |
| Generate Strategic Credit Master Fund I-B, L.P. | 13G | 1.4% | Sep 12, 2025 | — |
| Ryan Carver | Form 4 | 1.3% | Aug 1, 2026 | — |
| J. Goldman & Co LP | 13F | 0.97% | Jun 30, 2026 | Q2 2026 |
| William P. Phelan | Form 4 | 0.93% | Sep 3, 2026 | — |
| David C. Michaels | Form 4 | 0.83% | Jun 1, 2026 | — |
| Thomas J. Marusak | Form 4 | 0.82% | Jun 1, 2026 | — |
| State Street | 13F | 0.75% | Jun 30, 2026 | Q3 2024 |
| Matthew E. Lipman | Form 4 | 0.70% | Jun 1, 2026 | — |
| John Bottomley | Form 4 | 0.70% | Jun 1, 2026 | — |
| William Hazelip | Form 4 | 0.70% | Jun 1, 2026 | — |
| Edward R. Hirshfield | Form 4 | 0.70% | Jun 1, 2026 | — |
| Marshall Wace | 13F | 0.69% | Jun 30, 2026 | Q4 2025 |
| Mary Jennifer OReilly | Form 4 | 0.69% | Sep 1, 2026 | — |
| Jessica L. Thomas | Form 4 | 0.61% | Sep 23, 2026 | — |
| Michael Picchi | Form 4 | 0.59% | Aug 28, 2026 | — |
| YA II PN, Ltd. | 13G | 0.43% | Feb 5, 2025 | — |
| Mirae Asset | 13F | 0.42% | Jun 30, 2026 | Q4 2025 |
| UBS | 13F | 0.41% | Jun 30, 2026 | Q4 2023 |
Soluna institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2023 | 11 | 0.03% | $246,283.00 | 96.3% |
| Q4 2024 | 24 | 0.16% | $833,701.00 | 71.8% |
| Q4 2025 | 45 | 18.0% | $14.4M | 46.5% |
| Q2 2026 | 97 | 25.6% | $54.6M | 50.8% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.