ESS TECH INC -CW27 (GWH-WS) Institutional Ownership Changes & 13F Activity
ESS TECH INC -CW27 (GWH-WS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Heights Capital Management, Inc, Lmr Partners Llp, Saba Capital Management, L.P., Susquehanna International Group, Llp, and Vestcor Inc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Heights Capital Management, Inc | Buy | +586,218 | — | 586,218 | $29.96K | Q4 2025 | Feb 17, 2026 |
| Lmr Partners Llp | Buy | +391,284 | — | 391,284 | $20.00K | Q4 2025 | Feb 17, 2026 |
| Saba Capital Management, L.P. | Buy | +303,596 | — | 303,596 | $15.51K | Q4 2025 | Feb 17, 2026 |
| Susquehanna International Group, Llp | Buy | +237,247 | — | 237,247 | $12.12K | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +289 | — | 289 | $15.00 | Q4 2025 | Feb 17, 2026 |
| Marathon Trading Investment Management Llc | Buy | +20,130 | — | 20,130 | $1.03K | Q4 2025 | Feb 13, 2026 |
| Clear Street Group Inc. | Buy | +200 | — | 200 | $10.00 | Q4 2025 | Feb 13, 2026 |
| Jane Street Group, Llc | Buy | +58,937 | — | 58,937 | $3.01K | Q4 2025 | Feb 12, 2026 |
| Vestcor Inc | Buy | +105,182 | — | 105,182 | $5.00K | Q4 2025 | Feb 11, 2026 |
| Navalign, Llc | Buy | +3,600 | — | 3,600 | $184.00 | Q4 2025 | Feb 05, 2026 |
| Wolverine Asset Management Llc | Buy | +2,334 | — | 2,334 | $119.00 | Q4 2025 | Feb 02, 2026 |
| Ubs Group Ag | Buy | +1,632 | — | 1,632 | $83.00 | Q4 2025 | Jan 29, 2026 |
| Greenhouse Wealth Management, Llc | Buy | +50,000 | — | 50,000 | $2.56K | Q4 2025 | Jan 21, 2026 |
Frequently asked questions about GWH-WS activity
Which institutional owners are buying GWH-WS?
Institutional owners buying GWH-WS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in GWH-WS activity?
"Buy" means an investor increased their reported position in GWH-WS compared to the prior reporting period. This reflects growing exposure to ESS TECH INC -CW27 (GWH-WS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in GWH-WS increasing?
Institutional interest in GWH-WS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.