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 |
|---|---|---|---|---|---|
| Royal Bank of Canada | 112 | $0 | 0.00% | +7+6.7% | Added |
| Coston, McIsaac & Partners | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $1 | 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 |
| Hilton Head Capital Partners, LLC | 8 | $9 | 0.00% | 00.0% | Unchanged |
| Signature Equity Partners, LLC | 10 | $12 | 0.00% | 00.0% | Unchanged |
| Mather Group, LLC. | 20 | $23 | 0.00% | +20 | New |
| Harbor Investment Advisory, LLC | 33 | $39 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 36 | $42 | 0.00% | −9−20.0% | Reduced |
| MTM Investment Management, LLC | 40 | $47 | 0.00% | 00.0% | Unchanged |
| Wolff Wiese Magana LLC | 66 | $78 | 0.00% | 00.0% | Unchanged |
| Archer Investment Corp | 68 | $80 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 72 | $84 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 149 | $175 | 0.00% | +149 | New |
| Jones Financial Companies LLLP | 166 | $188 | 0.00% | +153+1,176.9% | Added |
| BNP Paribas Arbitrage, SA | 163 | $191 | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 200 | $222 | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 233 | $273 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 380 | $445 | 0.00% | −191−33.5% | Reduced |
| Group One Trading, L.P. | 409 | $479 | 0.00% | 00.0% | Unchanged |
| Missouri Trust & Investment Co | 633 | $741 | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 832 | $965 | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 1,314 | $1.54K | 0.00% | +1,314 | New |
| Rockefeller Capital Management L.P. | 2,024 | $2.37K | 0.00% | +2,024 | New |
| Golden State Wealth Management, LLC | 2,707 | $3.17K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 4,588 | $5.37K | 0.00% | +2,501+119.8% | Added |
| Advisor Group Holdings, Inc. | 6,239 | $7.30K | 0.00% | +133+2.2% | Added |
| LPL Financial LLC | 14,429 | $16.9K | 0.00% | +192+1.3% | Added |
| Resurgent Financial Advisors LLC | 15,606 | $18.3K | 0.01% | +15,606 | New |
| Primoris Wealth Advisors, LLC | 16,500 | $19.3K | 0.01% | +6,500+65.0% | Added |
| Two Sigma Securities, LLC | 16,592 | $19.4K | 0.00% | +16,592 | New |
| Virtu Financial LLC | 18,679 | $22.0K | 0.00% | +18,679 | New |
| Bridgeway Capital Management, LLC | 20,000 | $23.4K | 0.00% | +10,000+100.0% | Added |
| JPMorgan Chase & Co | 31,536 | $35.0K | 0.00% | −42,723−57.5% | Reduced |
| Northern Trust Corp | 31,339 | $36.7K | 0.00% | +20,751+196.0% | Added |
| State Street Corp | 46,975 | $55.0K | 0.00% | 00.0% | Unchanged |
| BlackRock, Inc. | 50,370 | $58.9K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 52,489 | $61.4K | 0.00% | +30.0% | Added |
| Vanguard Fiduciary Trust Co | 69,402 | $81.2K | 0.00% | +69,402 | New |
| Pathstone Holdings, LLC | 87,448 | $102.3K | 0.00% | −1,534−1.7% | Reduced |
| Green Alpha Advisors, LLC | 114,580 | $134.1K | 0.13% | −4,103−3.5% | Reduced |
| Gsa Capital Partners LLP | 145,578 | $170.0K | 0.01% | +70,854+94.8% | Added |
| UBS Group AG | 149,279 | $174.7K | 0.00% | +104,562+233.8% | Added |
| Shay Capital LLC | 180,000 | $210.6K | 0.03% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 223,561 | $261.6K | 0.00% | +87,091+63.8% | Added |
| Vanguard Capital Management LLC | 634,720 | $742.6K | 0.00% | +634,720 | New |
| Arosa Capital Management LP | 910,000 | $1.06M | 0.69% | −40,000−4.2% | Reduced |
| Heights Capital Management, Inc | 963,495 | $1.13M | 0.32% | +963,495 | New |
| Alyeska Investment Group, L.P. | 1,400,000 | $1.64M | 0.00% | 00.0% | Unchanged |
| Softbank Group Corp | 2,396,980 | $2.80M | 0.02% | 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 |