ESS Tech, Inc. - GWH
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SOFTBANK GROUP CORP. | History | No change | 2,396,980 | 2,804 | 0.02% | 0.03% | 1 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Alyeska Investment Group, L.P. | History | No change | 1,400,000 | 1,638 | 0.0% | 0.01% | 2 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HEIGHTS CAPITAL MANAGEMENT, INC | History | New | 963,495 | 1,127 | 0.31% | — | 3 | +963,495 | New | Q1 2026 | May 15, 2026 |
| Arosa Capital Management LP | History | Reduced | 910,000 | 1,064 | 0.16% | 0.22% | 4 | -40,000 | -4.21% | Q1 2026 | May 15, 2026 |
| VANGUARD GROUP INC | History | No change | 485,919 | 913 | 0.0% | 0.0% | 5 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 634,720 | 742 | 0.0% | — | 6 | +634,720 | New | Q1 2026 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 223,561 | 261 | 0.0% | 0.0% | 7 | +87,091 | 63.82% | Q1 2026 | May 15, 2026 |
| Shay Capital LLC | History | No change | 180,000 | 210 | 0.02% | 0.03% | 8 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | Added to | 149,279 | 174 | 0.0% | 0.0% | 9 | +104,562 | 233.83% | Q1 2026 | May 05, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Added to | 145,578 | 170 | 0.01% | 0.01% | 10 | +70,854 | 94.82% | Q1 2026 | May 08, 2026 |
| Green Alpha Advisors, LLC | History | Reduced | 114,580 | 134 | 0.13% | 0.2% | 11 | -4,103 | -3.46% | Q1 2026 | Apr 07, 2026 |
| Pathstone Holdings, LLC | History | Reduced | 87,448 | 102 | 0.0% | 0.0% | 12 | -1,534 | -1.72% | Q1 2026 | May 11, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 69,402 | 81 | 0.0% | — | 13 | +69,402 | New | Q1 2026 | May 08, 2026 |
| FMR LLC | History | Added to | 52,489 | 61 | 0.0% | 0.0% | 14 | +3 | 0.01% | Q1 2026 | May 15, 2026 |
| BlackRock, Inc. | History | No change | 50,370 | 58 | 0.0% | 0.0% | 15 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| STATE STREET CORP | History | No change | 46,975 | 54 | 0.0% | 0.0% | 16 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| NORTHERN TRUST CORP | History | Added to | 31,339 | 36 | 0.0% | 0.0% | 17 | +20,751 | 195.99% | Q1 2026 | May 14, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 31,536 | 35 | 0.0% | 0.0% | 18 | -42,723 | -57.53% | Q1 2026 | May 13, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Added to | 20,000 | 23 | 0.0% | 0.0% | 19 | +10,000 | 100.0% | Q1 2026 | May 15, 2026 |
| Virtu Financial LLC | History | New | 18,679 | 22 | 0.0% | — | 20 | +18,679 | New | Q1 2026 | May 14, 2026 |
| TWO SIGMA SECURITIES, LLC | History | New | 16,592 | 19 | 0.0% | — | 22 | +16,592 | New | Q1 2026 | May 15, 2026 |
| PRIMORIS WEALTH ADVISORS, LLC | History | Added to | 16,500 | 19 | 0.01% | 0.01% | 21 | +6,500 | 65.0% | Q1 2026 | Apr 30, 2026 |
| Resurgent Financial Advisors LLC | History | New | 15,606 | 18 | 0.01% | — | 23 | +15,606 | New | Q1 2026 | May 12, 2026 |
| LPL Financial LLC | History | Added to | 14,429 | 16 | 0.0% | 0.0% | 24 | +192 | 1.35% | Q1 2026 | May 06, 2026 |
| OSAIC HOLDINGS, INC. | History | Added to | 6,239 | 7 | 0.0% | 0.0% | 25 | +133 | 2.18% | Q1 2026 | May 15, 2026 |
| MORGAN STANLEY | History | Added to | 4,588 | 5 | 0.0% | 0.0% | 26 | +2,501 | 119.84% | Q1 2026 | May 15, 2026 |
| Golden State Wealth Management, LLC | History | No change | 2,707 | 3 | 0.0% | 0.0% | 27 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| Rockefeller Capital Management L.P. | History | New | 2,024 | 2 | 0.0% | — | 28 | +2,024 | New | Q1 2026 | May 14, 2026 |
| Vanguard Global Advisers, LLC | History | New | 1,314 | 1 | 0.0% | — | 29 | +1,314 | New | Q1 2026 | May 08, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -109,012 | -100.0% | Q1 2026 | May 12, 2026 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -49,609 | -100.0% | Q1 2026 | May 15, 2026 |
| Engineers Gate Manager LP | History | Closed out | 0 | 0 | — | 0.0% | — | -16,498 | -100.0% | Q1 2026 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -10,111 | -100.0% | Q1 2026 | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | 0.0% | — | -2,703 | -100.0% | Q1 2026 | May 15, 2026 |
| CWM, LLC | History | Reduced | 6 | 0 | — | 0.0% | — | -2,666 | -99.78% | Q1 2026 | May 14, 2026 |
| Tower Research Capital LLC (TRC) | History | Closed out | 0 | 0 | — | 0.0% | — | -2,494 | -100.0% | Q1 2026 | May 15, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | Closed out | 0 | 0 | — | 0.0% | — | -2,443 | -100.0% | Q1 2026 | May 08, 2026 |
| Western Wealth Management, LLC | History | New | 666 | 0 | — | — | — | +666 | New | Q1 2026 | May 19, 2026 |
| Parallel Advisors, LLC | History | Closed out | 0 | 0 | — | — | — | -300 | -100.0% | Q1 2026 | May 07, 2026 |
| SBI Securities Co., Ltd. | History | Reduced | 380 | 0 | — | 0.0% | — | -191 | -33.45% | Q1 2026 | Apr 27, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | Added to | 166 | 0 | — | — | — | +153 | 1176.92% | Q1 2026 | May 15, 2026 |
| HARBOUR INVESTMENTS, INC. | History | New | 149 | 0 | — | — | — | +149 | New | Q1 2026 | May 15, 2026 |
| Fortitude Family Office, LLC | History | Closed out | 0 | 0 | — | — | — | -120 | -100.0% | Q1 2026 | Apr 15, 2026 |
| MCGUIRE CAPITAL ADVISORS INC | History | Closed out | 0 | 0 | — | — | — | -81 | -100.0% | Q1 2026 | May 14, 2026 |
| NewEdge Advisors, LLC | History | Closed out | 0 | 0 | — | — | — | -72 | -100.0% | Q1 2026 | May 15, 2026 |
| MATHER GROUP, LLC. | History | New | 20 | 0 | — | — | — | +20 | New | Q1 2026 | Apr 13, 2026 |
| Navalign, LLC | History | Closed out | 0 | 0 | — | — | — | -13 | -100.0% | Q1 2026 | Apr 29, 2026 |
| TD Waterhouse Canada Inc. | History | Closed out | 0 | 0 | — | — | — | -13 | -100.0% | Q1 2026 | May 12, 2026 |
| WELLS FARGO & COMPANY/MN | History | Reduced | 36 | 0 | — | — | — | -9 | -20.0% | Q1 2026 | May 11, 2026 |
| ROYAL BANK OF CANADA | History | Added to | 112 | 0 | — | — | — | +7 | 6.67% | Q1 2026 | May 15, 2026 |
| CITIGROUP INC | History | No change | 1 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| NATIONAL BANK OF CANADA /FI/ | History | No change | 832 | 0 | — | 0.0% | — | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| GROUP ONE TRADING LLC | History | No change | 409 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | No change | 163 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 12, 2026 |
| Parkside Financial Bank & Trust | History | No change | 233 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| HARBOR INVESTMENT ADVISORY, LLC | History | No change | 33 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 23, 2026 |
| Pinnacle Wealth Planning Services, Inc. | History | No change | 6 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| Global Retirement Partners, LLC | History | No change | 366 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| Archer Investment Corp | History | No change | 68 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 04, 2026 |
| MTM Investment Management, LLC | History | No change | 40 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 06, 2026 |
| WOLFF WIESE MAGANA LLC | History | No change | 66 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 13, 2026 |
| Missouri Trust & Investment Co | History | No change | 633 | 0 | — | 0.0% | — | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Coston, McIsaac & Partners | History | No change | 3 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 22, 2026 |
| Smartleaf Asset Management LLC | History | No change | 200 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Signature Equity Partners, LLC | History | No change | 10 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Hilton Head Capital Partners, LLC | History | No change | 8 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 20, 2026 |