Soluna Holdings, Inc. (SLNH) Ownership
SLNH ownership summary
as of October 18, 2026- Institutions
- 21.2% of shares outstanding
- Insiders
- 22.92% of shares outstanding
- Shares outstanding
- 244.6M
- Float
- 186.8M shares available to trade
- Short interest
- 11.26% 25.1M shares short
- Days to cover
- 3.61 short interest up 3.0% vs prior month
- Institutions 21.23%
- Insiders 22.92%
- Other investors 55.85%
SLNH top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 3.41% | 8.3M | $5.6M | +7.5M (+961.2%) | June 30, 2026 |
| 2 | Nuveen, LLC | 2.28% | 5.6M | $3.7M | +5.6M (0.0%) | June 30, 2026 |
| 3 | Vident Advisory, LLC | 2.14% | 5.2M | $3.5M | +5.2M (+7,771.9%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 1.91% | 4.7M | $3.1M | +4.0M (+643.6%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 1.59% | 3.9M | $2.6M | +1.2M (+44.8%) | June 30, 2026 |
| 6 | J. Goldman & Co LP | 0.97% | 2.4M | $1.6M | +2.4M (0.0%) | June 30, 2026 |
| 7 | State Street Corp | 0.75% | 1.8M | $1.2M | +1.5M (+523.4%) | June 30, 2026 |
| 8 | Marshall Wace Asset Management Ltd | 0.69% | 1.7M | $1.1M | +1.1M (+188.8%) | June 30, 2026 |
| 9 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.42% | 1.0M | $689,905 | +233,057 (+29.3%) | June 30, 2026 |
| 10 | UBS Group AG | 0.41% | 999K | $669,629 | +109,143 (+12.3%) | June 30, 2026 |
| 11 | Alpine Fox Capital, LLC | 0.31% | 751K | $503,091 | +750,882 (0.0%) | June 30, 2026 |
| 12 | Northern Trust Corp | 0.30% | 738K | $494,397 | +634,991 (+617.0%) | June 30, 2026 |
| 13 | Vanguard Portfolio Management, LLC | 0.29% | 708K | $474,550 | +708,284 (0.0%) | June 30, 2026 |
| 14 | Vanguard Fiduciary Trust Co | 0.21% | 525K | $352,058 | +231,869 (+79.0%) | June 30, 2026 |
| 15 | Renaissance Technologies Corp | 0.18% | 453K | $303,242 | −382,677 (−45.8%) | June 30, 2026 |
| 16 | TRU INDEPENDENCE ASSET MANAGEMENT 2, LLC | 0.18% | 431K | $288,594 | +430,738 (0.0%) | June 30, 2026 |
| 17 | Virtu Financial LLC | 0.15% | 364K | $243,668 | +363,683 (0.0%) | June 30, 2026 |
| 18 | Yorkville Advisors Global, LP | 0.14% | 336K | $225,104 | — | June 30, 2026 |
| 19 | Bank of New York Mellon Corp | 0.11% | 262K | $175,239 | +261,551 (0.0%) | June 30, 2026 |
| 20 | Charles Schwab Investment Management Inc | 0.10% | 256K | $171,259 | +255,611 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 18 holders added 32.5M shares and 1 cut 383K.
SLNH top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | CoinShares Bitcoin Mng and Dgtl Pwr ETF | 1.86% | 4.6M | $3.1M | −344,141 (−7.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 1.54% | 3.8M | $2.5M | — | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 1.25% | 3.1M | $2.0M | −35,200 (−1.1%) | September 30, 2026 |
| 4 | Fidelity Small Cap Index | 0.47% | 1.1M | $767,939 | +6,290 (+0.6%) | July 31, 2026 |
| 5 | CompAM SB Blockchain Tech I EUR Acc | 0.42% | 1.0M | $690,100 | +370,000 (+56.1%) | June 30, 2026 |
| 6 | CREF Total Global Stock Account R3 | 0.40% | 979K | $656,221 | −140,026 (−12.5%) | August 31, 2026 |
| 7 | iShares Russell 2000 Value ETF | 0.38% | 935K | $626,532 | +1,418 (+0.2%) | September 30, 2026 |
| 8 | Nuveen Equity Index R6 | 0.38% | 932K | $624,224 | — | August 31, 2026 |
| 9 | Global X Blockchain ETF | 0.38% | 923K | $618,451 | — | September 30, 2026 |
| 10 | Vanguard Russell 2000 ETF | 0.23% | 562K | $376,276 | −37,576 (−6.3%) | September 30, 2026 |
| 11 | iShares Blockchain Technology ETF USDCap | 0.17% | 418K | $280,352 | — | September 30, 2026 |
| 12 | Fidelity Extended Market Index | 0.15% | 366K | $245,233 | +17,334 (+5.0%) | August 31, 2026 |
| 13 | Global X Blockchain ETF USD Acc | 0.13% | 307K | $205,793 | — | September 30, 2026 |
| 14 | iShares Micro-Cap ETF | 0.13% | 306K | $205,064 | −2,111 (−0.7%) | September 30, 2026 |
| 15 | Fidelity Nasdaq Composite Index | 0.12% | 281K | $188,429 | +190,342 (+209.4%) | August 31, 2026 |
| 16 | Schwab Small Cap Index | 0.10% | 256K | $171,259 | — | August 31, 2026 |
| 17 | Russell Inv US Small Cap Equity Y | 0.10% | 240K | $160,637 | — | August 31, 2026 |
| 18 | iShares Russell 2000 Small-Cap Idx Instl | 0.08% | 196K | $131,323 | — | August 31, 2026 |
| 19 | Abante Quant Value FI | 0.07% | 177K | $118,735 | — | August 31, 2026 |
| 20 | Mélanion BTC Eqs Universe ETF EUR | 0.07% | 168K | $112,650 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SLNH insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-16 | William P Phelan | Sell | $1.41 | 1,300 | $1,833 |
| 2025-06-11 | William P Phelan | Sell | $2.80 | 3,350 | $9,380 |
| 2025-06-10 | Jessica L Thomas | Sell | $2.80 | 3,300 | $9,240 |
| 2025-06-10 | William P Phelan | Sell | $2.98 | 10,000 | $29,800 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
SLNH shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SLNH
Institutional investors own 21.2% of Soluna's shares and insiders 22.92%. The largest holder is BlackRock Inc with 3.41% of the shares (8.3M), as of June 30, 2026. Among the top 20 institutions, 18 added shares and 1 reduced their stake in the latest filings. Short interest is 11.26% of the float, or 3.61 days of average trading volume. The share count rose 11,834.6% since 2014.
Related: SLNH analyst forecast, SLNH key metrics. See the SLNH stock overview for the latest quote and news.
SLNH ownership FAQ
Who owns the most Soluna stock?
The largest shareholders of Soluna are BlackRock Inc (3.41%), Nuveen, LLC (2.28%), Vident Advisory, LLC (2.14%), Vanguard Capital Management, LLC (1.91%), Geode Capital Management, LLC (1.59%).
What percentage of Soluna is owned by institutions?
Institutions hold 21.2% of Soluna's shares outstanding; insiders hold 22.92%.
Which funds own Soluna?
The largest fund holders of Soluna are CoinShares Bitcoin Mng and Dgtl Pwr ETF (1.86%), Vanguard MStar Total Stk Mkt Idx Invest (1.54%), iShares Russell 2000 ETF (1.25%), Fidelity Small Cap Index (0.47%), CompAM SB Blockchain Tech I EUR Acc (0.42%).
What is Soluna's short interest?
25.1M shares of Soluna were sold short, 11.26% of the float; at the average daily volume it would take 3.61 days to cover.
Are insiders buying or selling Soluna?
Of the latest 4 reported insider transactions in Soluna (since June 10, 2025), 0 were purchases and 4 were sales.
How many shares of Soluna are outstanding?
Soluna has 244.6M shares outstanding, of which 186.8M are in the public float.