Solid Power, Inc. (SLDP) Ownership
SLDP ownership summary
as of October 18, 2026- Institutions
- 37.3% of shares outstanding
- Insiders
- 9.50% of shares outstanding
- Shares outstanding
- 228.2M
- Float
- 208.0M shares available to trade
- Short interest
- 12.53% 28.2M shares short
- Days to cover
- 9.50 short interest up 1.5% vs prior month
- Institutions 37.26%
- Insiders 9.50%
- Other investors 53.24%
SLDP top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.50% | 17.1M | $34.4M | +3.4M (+24.6%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 3.70% | 8.4M | $17.0M | +115,373 (+1.4%) | June 30, 2026 |
| 3 | State Street Corp | 2.54% | 5.8M | $11.6M | +1.5M (+36.4%) | June 30, 2026 |
| 4 | Geode Capital Management, LLC | 2.26% | 5.2M | $10.4M | +599,886 (+13.2%) | June 30, 2026 |
| 5 | Riverstone Holdings LLC | 2.04% | 4.7M | $9.4M | −43,085 (−0.9%) | June 30, 2026 |
| 6 | Dimensional Fund Advisors, Inc. | 1.38% | 3.2M | $6.3M | −460,710 (−12.7%) | June 30, 2026 |
| 7 | D. E. Shaw & Co LP | 1.31% | 3.0M | $6.0M | −2.6M (−46.7%) | June 30, 2026 |
| 8 | Amvescap Plc. | 1.26% | 2.9M | $5.8M | +438,772 (+18.0%) | June 30, 2026 |
| 9 | Citadel Advisors Llc | 1.14% | 2.6M | $5.2M | +972,539 (+59.3%) | June 30, 2026 |
| 10 | Vanguard Portfolio Management, LLC | 1.00% | 2.3M | $4.6M | +150,984 (+7.1%) | June 30, 2026 |
| 11 | Bank of America Corp | 0.85% | 1.9M | $3.9M | −1.3M (−39.5%) | June 30, 2026 |
| 12 | Northern Trust Corp | 0.76% | 1.7M | $3.5M | +262,518 (+17.8%) | June 30, 2026 |
| 13 | Charles Schwab Investment Management Inc | 0.72% | 1.6M | $3.3M | +116,219 (+7.6%) | June 30, 2026 |
| 14 | The Goldman Sachs Group Inc | 0.70% | 1.6M | $3.2M | −3.0M (−65.0%) | June 30, 2026 |
| 15 | UBS Group AG | 0.67% | 1.5M | $3.1M | +805,897 (+112.8%) | June 30, 2026 |
| 16 | Vanguard Fiduciary Trust Co | 0.59% | 1.3M | $2.7M | +138,975 (+11.5%) | June 30, 2026 |
| 17 | Barclays PLC | 0.47% | 1.1M | $2.2M | +612,612 (+132.1%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 0.46% | 1.1M | $2.1M | −676,101 (−39.1%) | June 30, 2026 |
| 19 | Citigroup Inc | 0.44% | 1.0M | $2.0M | +790,794 (+372.7%) | June 30, 2026 |
| 20 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 0.26% | 587K | $1.2M | −668,700 (−53.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 9.9M shares and 7 cut 8.7M.
SLDP top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.65% | 6.0M | $12.1M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.40% | 5.5M | $11.0M | −63,232 (−1.1%) | September 30, 2026 |
| 3 | WisdomTree Battery Solutions ETF USD Acc | 1.18% | 2.7M | $5.4M | — | September 30, 2026 |
| 4 | Fidelity Small Cap Index | 0.97% | 2.2M | $4.5M | +13,161 (+0.6%) | July 31, 2026 |
| 5 | Invesco WilderHill Clean Energy ETF | 0.88% | 2.0M | $4.0M | −428,168 (−17.6%) | September 30, 2026 |
| 6 | Stt Strt®SPDR®S&PKenshoNwEcosComposETF | 0.59% | 1.4M | $2.7M | — | September 30, 2026 |
| 7 | Vanguard Russell 2000 ETF | 0.51% | 1.2M | $2.3M | +27,292 (+2.4%) | August 31, 2026 |
| 8 | iShares Russell 2000 Growth ETF | 0.49% | 1.1M | $2.3M | −1,428 (−0.1%) | September 30, 2026 |
| 9 | Schwab US Small-Cap ETF™ | 0.48% | 1.1M | $2.2M | +747 (+0.1%) | September 30, 2026 |
| 10 | Fidelity Extended Market Index | 0.46% | 1.1M | $2.1M | +226,552 (+27.2%) | August 31, 2026 |
| 11 | iShares Russell 2000 Value ETF | 0.37% | 853K | $1.7M | +1,294 (+0.2%) | September 30, 2026 |
| 12 | Vanguard Consumer Discretionary ETF | 0.30% | 692K | $1.4M | +4,914 (+0.7%) | August 31, 2026 |
| 13 | iShares Micro-Cap ETF | 0.28% | 640K | $1.3M | −4,414 (−0.7%) | September 30, 2026 |
| 14 | DFA US Micro Cap I | 0.25% | 578K | $1.2M | +772 (+0.1%) | August 31, 2026 |
| 15 | Schwab Small Cap Index | 0.22% | 495K | $995,274 | — | August 31, 2026 |
| 16 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.17% | 388K | $779,203 | +18,548 (+5.0%) | August 31, 2026 |
| 17 | iShares Russell 2000 Small-Cap Idx Instl | 0.17% | 379K | $762,345 | — | August 31, 2026 |
| 18 | Dimensional US Small Cap ETF | 0.16% | 368K | $739,101 | — | September 30, 2026 |
| 19 | Fidelity Total Market Index | 0.16% | 358K | $720,036 | — | August 31, 2026 |
| 20 | Avantis US Small Cap Equity ETF | 0.15% | 348K | $698,809 | +444 (+0.1%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SLDP insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-04 | Erik J Anderson | Sell | $5.20 | 30,000 | $156,000 |
| 2025-05-29 | Lesa B Roe | Sell | $1.69 | 29,000 | $49,010 |
| 2025-05-27 | Steven H Goldberg | Sell | $1.62 | 82,365 | $133,431 |
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.
SLDP shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SLDP
Institutional investors own 37.3% of Solid Power's shares and insiders 9.50%. The largest holder is BlackRock Inc with 7.50% of the shares (17.1M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 12.53% of the float, or 9.50 days of average trading volume. The share count rose 164.6% since 2020.
Related: SLDP analyst forecast, SLDP key metrics. See the SLDP stock overview for the latest quote and news.
SLDP ownership FAQ
Who owns the most Solid Power stock?
The largest shareholders of Solid Power are BlackRock Inc (7.50%), Vanguard Capital Management, LLC (3.70%), State Street Corp (2.54%), Geode Capital Management, LLC (2.26%), Riverstone Holdings LLC (2.04%).
What percentage of Solid Power is owned by institutions?
Institutions hold 37.3% of Solid Power's shares outstanding; insiders hold 9.50%.
Which funds own Solid Power?
The largest fund holders of Solid Power are Vanguard MStar Total Stk Mkt Idx Invest (2.65%), iShares Russell 2000 ETF (2.40%), WisdomTree Battery Solutions ETF USD Acc (1.18%), Fidelity Small Cap Index (0.97%), Invesco WilderHill Clean Energy ETF (0.88%).
What is Solid Power's short interest?
28.2M shares of Solid Power were sold short, 12.53% of the float; at the average daily volume it would take 9.50 days to cover.
Are insiders buying or selling Solid Power?
Of the latest 3 reported insider transactions in Solid Power (since May 27, 2025), 0 were purchases and 3 were sales.
How many shares of Solid Power are outstanding?
Solid Power has 228.2M shares outstanding, of which 208.0M are in the public float.