Eos Energy Enterprises, Inc. (EOSE) Ownership
EOSE ownership summary
as of October 18, 2026- Institutions
- 64.4% of shares outstanding
- Insiders
- 1.36% of shares outstanding
- Shares outstanding
- 361.7M
- Float
- 356.9M shares available to trade
- Short interest
- 37.39% 134.8M shares short
- Days to cover
- 4.74 short interest up 12.4% vs prior month
- Institutions 64.45%
- Insiders 1.36%
- Other investors 34.19%
EOSE top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.45% | 27.1M | $49.4M | +3.0M (+12.6%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 4.12% | 15.0M | $27.3M | +185,955 (+1.3%) | June 30, 2026 |
| 3 | Hudson Bay Capital Management LP | 3.76% | 13.7M | $24.9M | +13.7M (0.0%) | June 30, 2026 |
| 4 | Driehaus Capital Management LLC | 3.72% | 13.6M | $24.7M | −1.3M (−8.8%) | June 30, 2026 |
| 5 | Two Sigma Investments LLC | 3.51% | 12.8M | $23.3M | −1.3M (−9.2%) | June 30, 2026 |
| 6 | State Street Corp | 2.79% | 10.2M | $18.5M | +2.1M (+26.7%) | June 30, 2026 |
| 7 | Susquehanna International Group, LLP | 2.66% | 9.7M | $17.6M | +3.3M (+52.5%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.44% | 8.9M | $16.2M | +1.1M (+13.8%) | June 30, 2026 |
| 9 | Electron Capital Partners, LLC | 1.83% | 6.7M | $12.2M | +1.3M (+24.2%) | June 30, 2026 |
| 10 | Morgan Stanley - Brokerage Accounts | 1.46% | 5.3M | $9.7M | +2.4M (+79.5%) | June 30, 2026 |
| 11 | Stifel Financial Corp | 1.21% | 4.4M | $8.0M | +280,084 (+6.8%) | June 30, 2026 |
| 12 | Crystal Cove Asset Management, LLC | 1.18% | 4.3M | $7.8M | −13,306 (−0.3%) | June 30, 2026 |
| 13 | UBS Group AG | 1.07% | 3.9M | $7.1M | +2.0M (+106.0%) | June 30, 2026 |
| 14 | Legal & General Group PLC | 1.07% | 3.9M | $7.1M | +2.9M (+272.9%) | June 30, 2026 |
| 15 | Graham Capital Management | 0.98% | 3.6M | $6.5M | +3.6M (0.0%) | June 30, 2026 |
| 16 | Citadel Advisors Llc | 0.91% | 3.3M | $6.0M | −2.8M (−45.7%) | June 30, 2026 |
| 17 | Vanguard Portfolio Management, LLC | 0.90% | 3.3M | $6.0M | +446,895 (+15.7%) | June 30, 2026 |
| 18 | Northern Trust Corp | 0.80% | 2.9M | $5.3M | +417,041 (+16.7%) | June 30, 2026 |
| 19 | Charles Schwab Investment Management Inc | 0.78% | 2.8M | $5.2M | +200,898 (+7.6%) | June 30, 2026 |
| 20 | BNP Paribas Investment Partners SA | 0.71% | 2.6M | $4.7M | +1.2M (+88.0%) | 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 38.1M shares and 4 cut 5.4M.
EOSE top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.96% | 10.8M | $19.6M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.54% | 9.2M | $16.8M | −106,624 (−1.1%) | September 30, 2026 |
| 3 | Fidelity Small Cap Index | 1.03% | 3.8M | $6.9M | +30,188 (+0.8%) | July 31, 2026 |
| 4 | L&G Battery Value-Chain ETF | 0.97% | 3.5M | $6.4M | — | September 30, 2026 |
| 5 | iShares Russell 2000 Growth ETF | 0.92% | 3.4M | $6.1M | −4,244 (−0.1%) | September 30, 2026 |
| 6 | Vanguard Russell 2000 ETF | 0.54% | 2.0M | $3.6M | +46,927 (+2.4%) | August 31, 2026 |
| 7 | Schwab US Small-Cap ETF™ | 0.53% | 1.9M | $3.5M | +1,296 (+0.1%) | September 30, 2026 |
| 8 | Fidelity Extended Market Index | 0.46% | 1.7M | $3.1M | +15,253 (+0.9%) | August 31, 2026 |
| 9 | Driehaus Small Cap Growth Institutional | 0.40% | 1.4M | $2.6M | +31,800 (+2.3%) | July 31, 2026 |
| 10 | Heptagon Driehaus US Micro Cap Eq C$ Acc | 0.36% | 1.3M | $2.4M | — | August 31, 2026 |
| 11 | Heptagon Driehaus US Sm Cp Eq C USD Acc | 0.35% | 1.3M | $2.3M | +52,400 (+4.3%) | August 31, 2026 |
| 12 | Invesco WilderHill Clean Energy ETF | 0.34% | 1.2M | $2.2M | +360,704 (+41.4%) | September 30, 2026 |
| 13 | DNB Fund Disrpt Opps A EUR Acc | 0.33% | 1.2M | $2.2M | — | August 31, 2026 |
| 14 | Stt Strt® SPDR® S&P KenshoClnPwrETF | 0.29% | 1.0M | $1.9M | — | September 30, 2026 |
| 15 | Stt Strt®SPDR®S&PKenshoNwEcosComposETF | 0.26% | 959K | $1.7M | — | September 30, 2026 |
| 16 | Defiance AI & Power Infrastructure ETF | 0.26% | 953K | $1.7M | +1,464 (+0.2%) | September 30, 2026 |
| 17 | Schwab Small Cap Index | 0.23% | 836K | $1.5M | — | August 31, 2026 |
| 18 | Polar Capital Smart Energy I Acc | 0.22% | 810K | $1.5M | −60,000 (−6.9%) | August 31, 2026 |
| 19 | Janus Henderson Small/Md Cp Gr Alpha ETF | 0.22% | 804K | $1.5M | −361,157 (−31.0%) | September 30, 2026 |
| 20 | First Trust NASDAQ® Cln Edge® GrnEngyETF | 0.19% | 683K | $1.2M | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
EOSE insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-09 | David Urban | Buy | $6.16 | 16,250 | $100,100 |
| 2026-03-04 | Joe Mastrangelo | Buy | $6.58 | 23,900 | $157,262 |
| 2026-03-02 | Alexander Dimitrief | Buy | $6.04 | 15,000 | $90,600 |
| 2026-03-02 | Joe Mastrangelo | Buy | $5.75 | 60,000 | $345,000 |
| 2026-01-26 | Nathan Kroeker | Sell | $16.04 | 50,000 | $802,000 |
| 2026-01-23 | Michael W Silberman | Sell | $17.74 | 41,667 | $739,173 |
| 2025-12-08 | Russell Monoki Stidolph | Sell | $14.89 | 236,135 | $3.5M |
| 2025-12-08 | Russell Monoki Stidolph | Sell | $15.36 | 29,999 | $460,785 |
| 2025-12-05 | Russell Monoki Stidolph | Sell | $14.99 | 500,000 | $7.5M |
| 2025-12-04 | Marian Walters | Sell | $15.81 | 50,000 | $790,500 |
| 2025-09-08 | Sumeet Puri | Sell | $7.11 | 40,501 | $287,962 |
| 2025-09-03 | Marian Walters | Sell | $7.90 | 50,000 | $395,000 |
| 2025-08-04 | Alexander Dimitrief | Sell | $6.00 | 45,000 | $270,000 |
| 2025-07-29 | Joe Mastrangelo | Sell | $5.94 | 166,667 | $990,002 |
| 2025-07-29 | Michael W Silberman | Sell | $5.94 | 65,625 | $389,812 |
| 2025-07-29 | Nathan Kroeker | Sell | $5.94 | 99,375 | $590,288 |
| 2025-07-29 | Sumeet Puri | Sell | $5.94 | 17,500 | $103,950 |
| 2025-07-08 | Joe Mastrangelo | Sell | $4.92 | 127,152 | $625,588 |
| 2025-07-08 | Nathan Kroeker | Sell | $4.92 | 47,254 | $232,490 |
| 2025-07-07 | Nathan Kroeker | Sell | $5.21 | 24,124 | $125,686 |
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.
EOSE shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns EOSE
Institutional investors own 64.4% of Eos Energy Enterprises's shares and insiders 1.36%. The largest holder is BlackRock Inc with 7.45% of the shares (27.1M), 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 37.39% of the float, or 4.74 days of average trading volume. The share count rose 282.5% since 2019.
Related: EOSE analyst forecast, EOSE key metrics. See the EOSE stock overview for the latest quote and news.
EOSE ownership FAQ
Who owns the most Eos Energy Enterprises stock?
The largest shareholders of Eos Energy Enterprises are BlackRock Inc (7.45%), Vanguard Capital Management, LLC (4.12%), Hudson Bay Capital Management LP (3.76%), Driehaus Capital Management LLC (3.72%), Two Sigma Investments LLC (3.51%).
What percentage of Eos Energy Enterprises is owned by institutions?
Institutions hold 64.4% of Eos Energy Enterprises's shares outstanding; insiders hold 1.36%.
Which funds own Eos Energy Enterprises?
The largest fund holders of Eos Energy Enterprises are Vanguard MStar Total Stk Mkt Idx Invest (2.96%), iShares Russell 2000 ETF (2.54%), Fidelity Small Cap Index (1.03%), L&G Battery Value-Chain ETF (0.97%), iShares Russell 2000 Growth ETF (0.92%).
What is Eos Energy Enterprises's short interest?
134.8M shares of Eos Energy Enterprises were sold short, 37.39% of the float; at the average daily volume it would take 4.74 days to cover.
Are insiders buying or selling Eos Energy Enterprises?
Of the latest 20 reported insider transactions in Eos Energy Enterprises (since July 7, 2025), 4 were purchases and 16 were sales.
How many shares of Eos Energy Enterprises are outstanding?
Eos Energy Enterprises has 361.7M shares outstanding, of which 356.9M are in the public float.