ESS Tech, Inc.
GWH- Exchange
- NYSE
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- SEC CIK
- 0001819438
In the last 90 days, ESS Tech, Inc. insiders filed 0 open-market purchases and 2 sales; 47 institutions reported holding it in 13F filings for Q2 2026, worth $6.94M in total; no superinvestor holds it.
Other share classesGWHWW
13F holders, Q1 2026
Institutional positions in ESS Tech, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 51
- −2 vs. Q4 2025
- Shares held
- 7.61M
- +1.74M (+29.6%) vs. Q4 2025
- Total value
- $8.90M
- −$2.13M (−19.3%) vs. Q4 2025
- New holders
- 10
- 12 more added
- Sold out
- 12
- 7 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GWH on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 47 | $6.94M |
| Q1 2026 | 51 | $8.90M |
| Q4 2025 | 55 | $11.9M |
| Q3 2025 | 46 | $5.69M |
| Q2 2025 | 49 | $4.02M |
| Q1 2025 | 45 | $11.0M |
| Q4 2024 | 56 | $20.5M |
| Q3 2024 | 50 | $20.7M |
| Q2 2024 | 103 | $42.3M |
| Q1 2024 | 104 | $40.9M |
| Q4 2023 | 108 | $69.4M |
| Q3 2023 | 101 | $114.0M |
| Q2 2023 | 91 | $86.9M |
| Q1 2023 | 102 | $88.9M |
| Q4 2022 | 107 | $156.2M |
| Q3 2022 | 94 | $257.8M |
| Q2 2022 | 97 | $175.7M |
| Q1 2022 | 75 | $331.4M |
| Q4 2021 | 58 | $622.1M |
| Q3 2021 | 4 | $9.04M |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding ESS Tech, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Softbank Group Corp | 2,396,980 | $2.80M | 0.02% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 1,400,000 | $1.64M | 0.00% | 00.0% | Unchanged |
| Heights Capital Management, Inc | 963,495 | $1.13M | 0.32% | +963,495 | New |
| Arosa Capital Management LP | 910,000 | $1.06M | 0.69% | −40,000−4.2% | Reduced |
| Vanguard Capital Management LLC | 634,720 | $742.6K | 0.00% | +634,720 | New |
| Geode Capital Management, LLC | 223,561 | $261.6K | 0.00% | +87,091+63.8% | Added |
| Shay Capital LLC | 180,000 | $210.6K | 0.03% | 00.0% | Unchanged |
| UBS Group AG | 149,279 | $174.7K | 0.00% | +104,562+233.8% | Added |
| Gsa Capital Partners LLP | 145,578 | $170.0K | 0.01% | +70,854+94.8% | Added |
| Green Alpha Advisors, LLC | 114,580 | $134.1K | 0.13% | −4,103−3.5% | Reduced |
| Pathstone Holdings, LLC | 87,448 | $102.3K | 0.00% | −1,534−1.7% | Reduced |
| Vanguard Fiduciary Trust Co | 69,402 | $81.2K | 0.00% | +69,402 | New |
| FMR LLC | 52,489 | $61.4K | 0.00% | +30.0% | Added |
| BlackRock, Inc. | 50,370 | $58.9K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 46,975 | $55.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 31,339 | $36.7K | 0.00% | +20,751+196.0% | Added |
| JPMorgan Chase & Co | 31,536 | $35.0K | 0.00% | −42,723−57.5% | Reduced |
| Bridgeway Capital Management, LLC | 20,000 | $23.4K | 0.00% | +10,000+100.0% | Added |
| Virtu Financial LLC | 18,679 | $22.0K | 0.00% | +18,679 | New |
| Two Sigma Securities, LLC | 16,592 | $19.4K | 0.00% | +16,592 | New |
| Primoris Wealth Advisors, LLC | 16,500 | $19.3K | 0.01% | +6,500+65.0% | Added |
| Resurgent Financial Advisors LLC | 15,606 | $18.3K | 0.01% | +15,606 | New |
| LPL Financial LLC | 14,429 | $16.9K | 0.00% | +192+1.3% | Added |
| Advisor Group Holdings, Inc. | 6,239 | $7.30K | 0.00% | +133+2.2% | Added |
| Morgan Stanley | 4,588 | $5.37K | 0.00% | +2,501+119.8% | Added |
| Golden State Wealth Management, LLC | 2,707 | $3.17K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 2,024 | $2.37K | 0.00% | +2,024 | New |
| Vanguard Global Advisers, LLC | 1,314 | $1.54K | 0.00% | +1,314 | New |
| National Bank of Canada | 832 | $965 | 0.00% | 00.0% | Unchanged |
| Missouri Trust & Investment Co | 633 | $741 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 409 | $479 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 380 | $445 | 0.00% | −191−33.5% | Reduced |
| Parkside Financial Bank & Trust | 233 | $273 | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 200 | $222 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 163 | $191 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 166 | $188 | 0.00% | +153+1,176.9% | Added |
| Harbour Investments, Inc. | 149 | $175 | 0.00% | +149 | New |
| GWM Advisors LLC | 72 | $84 | 0.00% | 00.0% | Unchanged |
| Archer Investment Corp | 68 | $80 | 0.00% | 00.0% | Unchanged |
| Wolff Wiese Magana LLC | 66 | $78 | 0.00% | 00.0% | Unchanged |
| MTM Investment Management, LLC | 40 | $47 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 36 | $42 | 0.00% | −9−20.0% | Reduced |
| Harbor Investment Advisory, LLC | 33 | $39 | 0.00% | 00.0% | Unchanged |
| Mather Group, LLC. | 20 | $23 | 0.00% | +20 | New |
| Signature Equity Partners, LLC | 10 | $12 | 0.00% | 00.0% | Unchanged |
| Hilton Head Capital Partners, LLC | 8 | $9 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 6 | $7 | 0.00% | −2,666−99.8% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 6 | $7 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $1 | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 112 | $0 | 0.00% | +7+6.7% | Added |
| Coston, McIsaac & Partners | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −109,012−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −49,609−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −16,498−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −10,111−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −2,703−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −2,494−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −2,443−100.0% | Sold out |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −120−100.0% | Sold out |
| McGuire Capital Advisors Inc | 0 | $0 | 0.00% | −81−100.0% | Sold out |
| Navalign, LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| TD Waterhouse Canada Inc. | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |