# ESS TECH INC (GWHWS)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/GWHWS/

- Reporting holders: 12
- Reported value: $11.5K
- Held through calls: 12.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [HEIGHTS CAPITAL MANAGEMENT, INC](https://holderbook.com/funds/1081698-heights-capital-management-inc/) | $2.8K | 510,721 | 0.0% | 8 |
| [LMR Partners LLP](https://holderbook.com/funds/1578621-lmr-partners-llp/) | $2.2K | 391,284 | 0.0% | 16 |
| [Saba Capital Management, L.P.](https://holderbook.com/funds/1510281-saba-capital-management-l-p/) | $1.7K | 303,596 | 0.0% | 16 |
| [OpenArc Corporate Advisory, LLC](https://holderbook.com/funds/2111345-openarc-corporate-advisory-llc/) | $1.4K | 253,555 | 0.0% | 2 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $1.4K | 0 | 0.0% | 19 |
| [Vestcor Inc](https://holderbook.com/funds/1536925-vestcor-inc/) | $1.0K | 105,182 | 0.0% | 19 |
| [SUSQUEHANNA INTERNATIONAL GROUP, LLP](https://holderbook.com/funds/1446194-susquehanna-international-group-llp/) | $592 | 107,548 | 0.0% | 6 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $321 | 58,356 | 0.0% | 19 |
| [Marathon Trading Investment Management LLC](https://holderbook.com/funds/1572748-marathon-trading-investment-management-llc/) | $111 | 20,130 | 0.0% | 19 |
| [WOLVERINE ASSET MANAGEMENT LLC](https://holderbook.com/funds/1279891-wolverine-asset-management-llc/) | $27 | 4,834 | 0.0% | 13 |
| [Clear Street Group Inc.](https://holderbook.com/funds/1881567-clear-street-group-inc/) | $3 | 600 | 0.0% | 4 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $0 | 100 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 12 | $11.5K |
| Q1 2026 | 12 | $47.7K |
| Q4 2025 | 14 | $102.4K |
| Q3 2025 | 13 | $81.2K |
| Q2 2025 | 13 | $76.5K |
| Q1 2025 | 14 | $156.1K |
| Q4 2024 | 12 | $120.7K |
| Q3 2024 | 12 | $71.0K |
| Q2 2024 | 16 | $130.8K |
| Q1 2024 | 16 | $143.4K |
| Q4 2023 | 15 | $155.4K |
| Q3 2023 | 15 | $465.9K |