ESS TECH INC (GWH) Institutional Ownership Changes & 13F Activity
ESS TECH INC (GWH). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Ubs Group Ag, Heights Capital Management, Inc, Arosa Capital Management Lp, Gsa Capital Partners Llp, and Blackrock, Inc..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Parkside Financial Bank & Trust | Buy | +767 | +329.2% | 1,000 | $950.00 | Q2 2026 | Sep 04, 2026 |
| Heights Capital Management, Inc | Sell | -414,874 | -43.1% | 548,621 | $521.19K | Q2 2026 | Aug 14, 2026 |
| Arosa Capital Management Lp | Sell | -360,000 | -39.6% | 550,000 | $522.50K | Q2 2026 | Aug 14, 2026 |
| Shay Capital Llc | Buy | +30,146 | +16.7% | 210,146 | $199.64K | Q2 2026 | Aug 14, 2026 |
| Osaic Holdings, Inc. | Buy | +2,120 | +34.0% | 8,359 | $7.94K | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Buy | +639 | — | 639 | $607.00 | Q2 2026 | Aug 14, 2026 |
| Larson Financial Group Llc | Buy | +20 | — | 20 | $19.00 | Q2 2026 | Aug 14, 2026 |
| Royal Bank Of Canada | Buy | +12 | +10.7% | 124 | $0.00 | Q2 2026 | Aug 14, 2026 |
| Ubs Group Ag | Buy | +453,328 | +303.7% | 602,607 | $572.48K | Q2 2026 | Aug 13, 2026 |
| Vanguard Fiduciary Trust Co | Buy | +60,475 | +87.1% | 129,877 | $123.38K | Q2 2026 | Aug 13, 2026 |
| Northern Trust Corp | Buy | +16,193 | +51.7% | 47,532 | $45.16K | Q2 2026 | Aug 13, 2026 |
| Renaissance Technologies LLC | Buy | +12,700 | — | 12,700 | $12.06K | Q2 2026 | Aug 13, 2026 |
| Vanguard Capital Management Llc | Buy | +4,200 | +0.7% | 638,920 | $606.97K | Q2 2026 | Aug 13, 2026 |
| Morgan Stanley | Sell | -27 | -0.6% | 4,561 | $4.33K | Q2 2026 | Aug 13, 2026 |
| Bnp Paribas Financial Markets | Sell | -6 | -3.7% | 157 | $149.00 | Q2 2026 | Aug 13, 2026 |
| Fmr Llc | Sell | -4 | -0.0% | 52,485 | $49.86K | Q2 2026 | Aug 13, 2026 |
| Jpmorgan Chase & Co | Buy | +19,896 | — | 19,896 | $19.62K | Q2 2026 | Aug 12, 2026 |
| Geode Capital Management, Llc | Sell | -13,524 | -6.0% | 210,037 | $199.55K | Q2 2026 | Aug 12, 2026 |
| Harbour Investments, Inc. | Buy | +94 | +63.1% | 243 | $231.00 | Q2 2026 | Aug 12, 2026 |
| Newedge Advisors, Llc | Buy | +72 | — | 72 | $68.00 | Q2 2026 | Aug 12, 2026 |
| Green Alpha Advisors, Llc | Buy | +1,195 | +1.0% | 115,775 | $109.99K | Q2 2026 | Aug 11, 2026 |
| Blackrock, Inc. | Buy | +83,497 | +165.8% | 133,867 | $127.17K | Q2 2026 | Aug 07, 2026 |
| Gsa Capital Partners Llp | Sell | -134,533 | -92.4% | 11,045 | $10.00K | Q2 2026 | Aug 06, 2026 |
| Pks Advisory Services, Llc | Buy | +24,000 | — | 24,000 | $22.80K | Q2 2026 | Aug 04, 2026 |
| Sbi Securities Co., Ltd. | Buy | +601 | +158.2% | 981 | $932.00 | Q2 2026 | Jul 23, 2026 |
| Western Wealth Management, Llc | Sell | -666 | -100.0% | 0 | $0.00 | Q2 2026 | May 19, 2026 |
| Two Sigma Securities, Llc | Sell | -16,592 | -100.0% | 0 | $0.00 | Q2 2026 | May 15, 2026 |
| Virtu Financial Llc | Sell | -18,679 | -100.0% | 0 | $0.00 | Q2 2026 | May 14, 2026 |
| Missouri Trust & Investment Co | Sell | -633 | -100.0% | 0 | $0.00 | Q2 2026 | May 14, 2026 |
| Cwm, Llc | Sell | -6 | -100.0% | 0 | $0.00 | Q2 2026 | May 14, 2026 |
Frequently asked questions about GWH activity
Which institutional owners are buying GWH?
Institutional owners buying GWH 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 activity?
"Buy" means an investor increased their reported position in GWH compared to the prior reporting period. This reflects growing exposure to ESS TECH INC (GWH) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in GWH increasing?
Institutional interest in GWH 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.