SunPower Corporation (SPWR) Ownership
SPWR ownership summary
as of October 18, 2026- Institutions
- 28.3% of shares outstanding
- Insiders
- 20.51% of shares outstanding
- Shares outstanding
- 320.3M
- Float
- 92.9M shares available to trade
- Short interest
- 8.73% 20.0M shares short
- Days to cover
- 1.18 short interest up 7.5% vs prior month
- Institutions 28.30%
- Insiders 20.51%
- Other investors 51.19%
SPWR top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard Capital Management, LLC | 1.44% | 4.6M | $1.1M | +1.5M (+49.8%) | June 30, 2026 |
| 2 | The Carlyle Group Inc | 0.73% | 2.3M | $576,562 | +1.9M (+441.1%) | June 30, 2026 |
| 3 | Polar Asset Management Partners | 0.65% | 2.1M | $514,073 | — | June 30, 2026 |
| 4 | Cygnus Capital Advisors, LLC | 0.49% | 1.6M | $384,314 | +1.0M (+196.9%) | June 30, 2026 |
| 5 | Ardsley Advisory Partners | 0.44% | 1.4M | $348,352 | +456,065 (+47.5%) | June 30, 2026 |
| 6 | DDD Partners, LLC | 0.43% | 1.4M | $338,955 | +1.3M (+1,500.3%) | June 30, 2026 |
| 7 | Springbok Capital Management, LLC | 0.40% | 1.3M | $313,561 | +673,081 (+111.9%) | June 30, 2026 |
| 8 | BlackRock Inc | 0.39% | 1.3M | $308,479 | −2.8M (−69.4%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 0.34% | 1.1M | $267,763 | −294,425 (−21.3%) | June 30, 2026 |
| 10 | Westerly Capital Management LLC | 0.31% | 1.0M | $246,000 | +350,000 (+53.8%) | June 30, 2026 |
| 11 | Alyeska Investment Group, L.P. | 0.26% | 840K | $206,536 | — | June 30, 2026 |
| 12 | Geode Capital Management, LLC | 0.24% | 773K | $190,264 | −1.0M (−57.2%) | June 30, 2026 |
| 13 | Diametric Capital, LP | 0.23% | 731K | $179,778 | +143,745 (+24.5%) | June 30, 2026 |
| 14 | Qube Research & Technologies | 0.19% | 611K | $150,306 | +611,002 (0.0%) | June 30, 2026 |
| 15 | Yorkville Advisors Global, LP | 0.17% | 551K | $135,546 | +551,000 (0.0%) | June 30, 2026 |
| 16 | XTX Topco Ltd | 0.15% | 485K | $119,214 | −93,469 (−16.2%) | June 30, 2026 |
| 17 | Vanguard Fiduciary Trust Co | 0.14% | 464K | $114,141 | +24,046 (+5.5%) | June 30, 2026 |
| 18 | UBS Group AG | 0.14% | 444K | $109,214 | +338,317 (+320.3%) | June 30, 2026 |
| 19 | Sphera Management Technology Funds Ltd | 0.14% | 434K | $106,641 | — | June 30, 2026 |
| 20 | Morgan Stanley - Brokerage Accounts | 0.13% | 431K | $106,121 | +362,102 (+522.6%) | 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 9.3M shares and 4 cut 4.3M.
SPWR top mutual fund and ETF holders
13 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 1.14% | 3.7M | $900,141 | — | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.11% | 350K | $86,165 | −1,882 (−0.5%) | August 31, 2026 |
| 3 | iShares Micro-Cap ETF | 0.11% | 338K | $83,038 | −2,328 (−0.7%) | September 30, 2026 |
| 4 | Haas invest4 innovation S | 0.08% | 250K | $61,499 | +99,938 (+66.6%) | September 30, 2026 |
| 5 | Firsthand Alternative Energy | 0.05% | 150K | $36,900 | — | June 30, 2026 |
| 6 | Fidelity Total Market Index | 0.04% | 119K | $29,207 | — | August 31, 2026 |
| 7 | Fidelity Series Total Market Index | 0.03% | 95K | $23,361 | — | August 31, 2026 |
| 8 | Vanguard MStar Inst Ttl StkMktIdxInstlPl | 0.03% | 90K | $22,064 | — | August 31, 2026 |
| 9 | BSF Systematic US Eq Abs Ret A2 USD | 0.02% | 58K | $14,269 | — | December 31, 2025 |
| 10 | Vanguard Balanced Index Inv | 0.02% | 57K | $14,042 | — | August 31, 2026 |
| 11 | Vanguard U.S. Eq Idx £ Acc | 0.01% | 34K | $8,379 | — | August 31, 2026 |
| 12 | 1290 VT Micro Cap K | 0.01% | 21K | $5,164 | — | August 31, 2026 |
| 13 | JHVIT Strategic Equity Allocation NAV | <0.01% | 4,342 | $1,068 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SPWR insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-10-23 | Adam Gishen | Sell | $2.04 | 20,000 | $40,800 |
| 2025-06-03 | Thurman J Rodgers | Buy | $1.68 | 606,000 | $1.0M |
| 2025-06-02 | Thurman J Rodgers | Buy | $1.49 | 21,177 | $31,554 |
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.
SPWR shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SPWR
Institutional investors own 28.3% of SunPower's shares and insiders 20.51%. The largest holder is Vanguard Capital Management, LLC with 1.44% of the shares (4.6M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 4 reduced their stake in the latest filings. Short interest is 8.73% of the float, or 1.18 days of average trading volume. The share count rose 417.5% since 2014.
Related: SPWR analyst forecast, SPWR key metrics. See the SPWR stock overview for the latest quote and news.
SPWR ownership FAQ
Who owns the most SunPower stock?
The largest shareholders of SunPower are Vanguard Capital Management, LLC (1.44%), The Carlyle Group Inc (0.73%), Polar Asset Management Partners (0.65%), Cygnus Capital Advisors, LLC (0.49%), Ardsley Advisory Partners (0.44%).
What percentage of SunPower is owned by institutions?
Institutions hold 28.3% of SunPower's shares outstanding; insiders hold 20.51%.
Which funds own SunPower?
The largest fund holders of SunPower are Vanguard MStar Total Stk Mkt Idx Invest (1.14%), Fidelity Extended Market Index (0.11%), iShares Micro-Cap ETF (0.11%), Haas invest4 innovation S (0.08%), Firsthand Alternative Energy (0.05%).
What is SunPower's short interest?
20.0M shares of SunPower were sold short, 8.73% of the float; at the average daily volume it would take 1.18 days to cover.
Are insiders buying or selling SunPower?
Of the latest 3 reported insider transactions in SunPower (since June 2, 2025), 2 were purchases and 1 were sales.
How many shares of SunPower are outstanding?
SunPower has 320.3M shares outstanding, of which 92.9M are in the public float.