Eos Energy EOSE
$1.74 −$0.14 (-7.45%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $1.77 +1.71%
Open$1.97
Prev close$1.88
Day range$1.74 – $1.98
Volume26.02M
Market cap$637.47M
P/E (TTM)–
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership63.6%-5.05 pts vs. prior quarter
Institutions holding401-1 vs. prior quarter
Insider trades (recent)33 buys / 17 sellsNet buying
Short interest38.24% of floatDays to cover 4.7 · as of 15 Oct 2026
Short-sale volume share13.4%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$19.44M (10 inflow days, 10 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 23.2% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 32.76% to 38.24% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Hudson Bay Capital Management LP | Hedge Fund | 2026/Q3 | +13,683,634 | 3.8% |
| Graham Capital Management, L.P. | Hedge Fund | 2026/Q3 | +3,566,446 | 1.0% |
| Susquehanna International Group, LLP | Private Company | 2026/Q3 | +3,332,709 | 2.7% |
| BlackRock | Mutual Fund | 2026/Q3 | +3,046,526 | 7.4% |
| Legal & General Investment Management | Mutual Fund | 2026/Q3 | +2,854,116 | 1.1% |
| Morgan Stanley | Public Company | 2026/Q3 | +2,285,907 | 1.4% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +2,137,005 | 2.8% |
| UBS Asset Management | Mutual Fund | 2026/Q3 | +2,061,239 | 1.2% |
| ExodusPoint Capital Management, LP | Hedge Fund | 2026/Q3 | +2,004,017 | 0.6% |
| Cable Car Capital LLC | Hedge Fund | 2026/Q3 | +2,000,000 | 0.5% |
| Mirae Asset Global Investments Co., Ltd | Mutual Fund | 2026/Q3 | +1,660,254 | 0.7% |
| Alyeska Investment Group, L.P. | Hedge Fund | 2026/Q3 | +1,350,000 | 0.6% |
| Electron Capital Partners, LLC | Hedge Fund | 2026/Q3 | +1,302,198 | 1.8% |
| URSA Fund Management LLC | Hedge Fund | 2026/Q3 | +1,235,459 | 0.3% |
| Masters Capital Management, L.L.C. | Hedge Fund | 2026/Q3 | +1,200,000 | 0.3% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 21 Sep 2026 | Michael Silberman | Former Officer | Intent to Sell (Form 144) | -114,650 | $4.08 | – |
| 15 Sep 2026 | Joseph Mastrangelo | Chief Executive Officer | Automatic Disposition | -250,000 | $3.92 | 2,308,704 |
| 15 Sep 2026 | Nathan Kroeker | Former Officer | Intent to Sell (Form 144) | -165,625 | $4.15 | – |
| 15 Sep 2026 | Michael Silberman | Former Officer | Intent to Sell (Form 144) | -109,375 | $4.15 | – |
| 15 Sep 2026 | Sumeet Puri | Chief Accounting Officer | Intent to Sell (Form 144) | -43,750 | $4.15 | – |
| 15 Sep 2026 | Sumeet Puri | Chief Accounting Officer | Derivative Exercise and Sale | -43,750 | $3.92 | 280,195 |
| 13 Sep 2026 | Joseph Mastrangelo | Chief Executive Officer | Other Acquisition | +500,000 | – | 2,308,704 |
| 13 Sep 2026 | Sumeet Puri | Chief Accounting Officer | Derivative Exercise and Retained | +43,750 | – | 280,195 |
| 13 Sep 2026 | Haiyan Song | Independent Director | Open Market Acquisition | +15,000 | $3.95 | 15,000 |
| 8 Sep 2026 | Sumeet Puri | Chief Accounting Officer | Intent to Sell (Form 144) | -34,167 | $4.18 | – |
| 8 Sep 2026 | Sumeet Puri | Chief Accounting Officer | Derivative Exercise and Sale | -34,167 | $4.13 | 236,445 |
| 4 Sep 2026 | Sumeet Puri | Chief Accounting Officer | Derivative Exercise and Retained | +34,166 | – | 236,445 |
| 23 Aug 2026 | Joseph Mastrangelo | Chief Executive Officer | Other Derivative Acquisition | +611,406 | – | 611,406 |
| 23 Aug 2026 | Sumeet Puri | Chief Accounting Officer | Other Derivative Acquisition | +65,044 | – | 65,044 |
| 23 Aug 2026 | Michelle Buczkowski | Chief Commercial Officer | Other Derivative Acquisition | +195,130 | – | 195,130 |
| 23 Aug 2026 | Alessandro Lagi | Chief Financial Officer | Other Derivative Acquisition | +195,130 | – | 195,130 |
| 27 Jul 2026 | Nathan Kroeker | Former Officer | Intent to Sell (Form 144) | -110,417 | $3.43 | – |
| 27 Jul 2026 | Michael Silberman | Former Officer | Intent to Sell (Form 144) | -72,917 | $3.43 | – |
| 27 Jul 2026 | Sumeet Puri | Chief Accounting Officer | Intent to Sell (Form 144) | -29,167 | $3.43 | – |
| 27 Jul 2026 | Nathan Kroeker | Former Officer | Derivative Exercise and Sale | -110,417 | $3.36 | 887,527 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 139,270,563 | 38.2% | 4.7 |
| 30 Sep 2026 | 134,847,658 | 37.0% | 4.7 |
| 15 Sep 2026 | 120,015,346 | 33.0% | 4.1 |
| 31 Aug 2026 | 111,323,398 | 30.6% | 5.0 |
| 14 Aug 2026 | 112,753,376 | 31.0% | 4.1 |
| 31 Jul 2026 | 115,719,997 | 32.8% | 4.4 |
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