Plug Power Inc. (PLUG) Ownership
PLUG ownership summary
as of October 18, 2026- Institutions
- 73.2% of shares outstanding
- Insiders
- 4.52% of shares outstanding
- Shares outstanding
- 1.40B
- Float
- 1.33B shares available to trade
- Short interest
- 22.95% 284.6M shares short
- Days to cover
- 5.97 short interest down 0.9% vs prior month
- Institutions 73.23%
- Insiders 4.52%
- Other investors 22.25%
PLUG top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 13.17% | 184.0M | $254.0M | +31.9M (+21.0%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 4.74% | 66.2M | $91.3M | +6.6M (+11.0%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 4.50% | 62.9M | $86.9M | +386,646 (+0.6%) | June 30, 2026 |
| 4 | State Street Corp | 2.77% | 38.8M | $53.5M | +2.2M (+6.1%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 2.62% | 36.6M | $50.4M | +1.8M (+5.3%) | June 30, 2026 |
| 6 | UBS Group AG | 2.37% | 33.1M | $45.7M | −8.5M (−20.4%) | June 30, 2026 |
| 7 | Citadel Advisors Llc | 1.73% | 24.1M | $33.3M | +23.3M (+2,712.4%) | June 30, 2026 |
| 8 | Two Sigma Investments LLC | 1.62% | 22.6M | $31.2M | −4.8M (−17.5%) | June 30, 2026 |
| 9 | D. E. Shaw & Co LP | 1.57% | 21.9M | $30.3M | −27.0M (−55.2%) | June 30, 2026 |
| 10 | Dimensional Fund Advisors, Inc. | 1.40% | 19.5M | $26.9M | +1.4M (+7.5%) | June 30, 2026 |
| 11 | Handelsbanken Fonder AB | 1.36% | 19.0M | $26.2M | +15.5M (+446.9%) | June 30, 2026 |
| 12 | Millennium Management LLC | 0.98% | 13.7M | $18.9M | +3.5M (+34.0%) | June 30, 2026 |
| 13 | Northern Trust Corp | 0.91% | 12.8M | $17.6M | +1.1M (+9.1%) | June 30, 2026 |
| 14 | The Goldman Sachs Group Inc | 0.89% | 12.4M | $17.1M | +3.2M (+35.1%) | June 30, 2026 |
| 15 | Renaissance Technologies Corp | 0.84% | 11.8M | $16.3M | −16.0M (−57.5%) | June 30, 2026 |
| 16 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.84% | 11.7M | $16.1M | +2.8M (+31.4%) | June 30, 2026 |
| 17 | Charles Schwab Investment Management Inc | 0.83% | 11.6M | $16.0M | +294,748 (+2.6%) | June 30, 2026 |
| 18 | Barclays PLC | 0.78% | 10.9M | $15.1M | +2.2M (+25.5%) | June 30, 2026 |
| 19 | Vanguard Fiduciary Trust Co | 0.71% | 10.0M | $13.7M | +997,191 (+11.1%) | June 30, 2026 |
| 20 | Legal & General Group PLC | 0.70% | 9.7M | $13.4M | +540,103 (+5.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 97.8M shares and 4 cut 56.2M.
PLUG top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Global Clean Engy Trns ETF $Dist | 3.27% | 45.7M | $63.1M | — | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.18% | 44.5M | $61.4M | −60,150 (−0.1%) | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 2.54% | 35.5M | $48.9M | −408,704 (−1.1%) | September 30, 2026 |
| 4 | Vanguard Small Cap Index | 2.25% | 31.5M | $43.4M | −614,098 (−1.9%) | September 30, 2026 |
| 5 | iShares Global Clean Energy ETF | 2.15% | 30.0M | $41.5M | — | September 30, 2026 |
| 6 | Vanguard MStar Small Cap Growth Indx Inv | 1.25% | 17.5M | $24.2M | −859,061 (−4.7%) | September 30, 2026 |
| 7 | Handelsbanken Hållbar Energi (A1 SEK) | 1.23% | 17.2M | $23.8M | −431,760 (−2.4%) | September 30, 2026 |
| 8 | Fidelity Small Cap Index | 1.07% | 15.0M | $20.6M | +120,091 (+0.8%) | July 31, 2026 |
| 9 | iShares Russell 2000 Growth ETF | 0.92% | 12.8M | $17.7M | −16,207 (−0.1%) | September 30, 2026 |
| 10 | Vanguard Russell 2000 ETF | 0.57% | 8.0M | $11.0M | +89,589 (+1.1%) | September 30, 2026 |
| 11 | Schwab US Small-Cap ETF™ | 0.53% | 7.4M | $10.1M | +4,968 (+0.1%) | September 30, 2026 |
| 12 | Fidelity Extended Market Index | 0.49% | 6.9M | $9.5M | +247,526 (+3.7%) | August 31, 2026 |
| 13 | L&G Hydrogen Economy ETF USD Acc | 0.44% | 6.1M | $8.4M | −3,570 (−0.1%) | September 30, 2026 |
| 14 | Jupiter Merian Glb Eq Abs Rt I USD Acc | 0.39% | 5.4M | $7.5M | +1.4M (+35.8%) | June 30, 2026 |
| 15 | VanEck Hydrogen Ecoy ETF A USD | 0.38% | 5.3M | $7.3M | — | September 30, 2026 |
| 16 | Global X Hydrogen ETF | 0.33% | 4.6M | $6.4M | — | September 30, 2026 |
| 17 | Dimensional US Small Cap ETF | 0.31% | 4.4M | $6.1M | — | September 30, 2026 |
| 18 | DFA US Micro Cap I | 0.29% | 4.0M | $5.6M | +798,898 (+24.7%) | August 31, 2026 |
| 19 | Stt Strt®SPDR®S&PKenshoNwEcosComposETF | 0.26% | 3.6M | $5.0M | — | September 30, 2026 |
| 20 | Nuveen Quant Small Cap Equity R6 | 0.24% | 3.4M | $4.7M | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
PLUG insider transactions
latest 8| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-12 | Benjamin Haycraft | Sell | $2.17 | 40,000 | $86,800 |
| 2025-12-15 | Jose Luis Crespo | Buy | $2.34 | 37,300 | $87,282 |
| 2025-12-10 | Benjamin Haycraft | Sell | $2.20 | 40,000 | $88,000 |
| 2025-11-10 | Benjamin Haycraft | Sell | $2.92 | 10,000 | $29,200 |
| 2025-10-10 | Benjamin Haycraft | Sell | $3.80 | 10,000 | $38,000 |
| 2025-09-16 | Benjamin Haycraft | Sell | $1.59 | 10,972 | $17,445 |
| 2025-06-09 | Paul B Middleton | Buy | $1.03 | 650,000 | $669,500 |
| 2025-05-16 | Paul B Middleton | Buy | $0.72 | 350,000 | $252,000 |
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.
PLUG shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns PLUG
Institutional investors own 73.2% of Plug Power's shares and insiders 4.52%. The largest holder is BlackRock Inc with 13.17% of the shares (184.0M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 4 reduced their stake in the latest filings. Short interest is 22.95% of the float, or 5.97 days of average trading volume. The share count rose 569.1% since 2014.
Related: PLUG analyst forecast, PLUG key metrics. See the PLUG stock overview for the latest quote and news.
PLUG ownership FAQ
Who owns the most Plug Power stock?
The largest shareholders of Plug Power are BlackRock Inc (13.17%), Vanguard Portfolio Management, LLC (4.74%), Vanguard Capital Management, LLC (4.50%), State Street Corp (2.77%), Geode Capital Management, LLC (2.62%).
What percentage of Plug Power is owned by institutions?
Institutions hold 73.2% of Plug Power's shares outstanding; insiders hold 4.52%.
Which funds own Plug Power?
The largest fund holders of Plug Power are iShares Global Clean Engy Trns ETF $Dist (3.27%), Vanguard MStar Total Stk Mkt Idx Invest (3.18%), iShares Russell 2000 ETF (2.54%), Vanguard Small Cap Index (2.25%), iShares Global Clean Energy ETF (2.15%).
What is Plug Power's short interest?
284.6M shares of Plug Power were sold short, 22.95% of the float; at the average daily volume it would take 5.97 days to cover.
Are insiders buying or selling Plug Power?
Of the latest 8 reported insider transactions in Plug Power (since May 16, 2025), 3 were purchases and 5 were sales.
How many shares of Plug Power are outstanding?
Plug Power has 1.40B shares outstanding, of which 1.33B are in the public float.