GWH
ESS Tech, Inc.
$0.86
-0.05 (-5.27%)
At close · Jul 2
Market Cap
$25.36M
Shares
29,389,170
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 52
Total Value: $8,904,543
Total Shares: 7,610,742
Institutional Ownership Trend
8 quarters
Holder Concentration
Across 52 13F filers · Δ vs Dec 31, 2025Top Holder
31.5%
−6.2 pts
Top 5
82.8%
−2.3 pts
Top 10
93.5%
+0.1 pts
HHI
1,731
Moderately concentrated−485
Quarterly Activity
vs Dec 31, 2025
New
11
Increased
12
Decreased
7
Sold Out
14
Unchanged
22
Holder count:
-3
Institutional value:
-25.5%
Shares held:
+19.7%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega UBS Group AG | +104,562 | 149,279 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +87,091 | 223,561 | |
| Mid GSA CAPITAL PARTNERS LLP | +70,854 | 145,578 | |
| Mega NORTHERN TRUST CORP | +20,751 | 31,339 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | +10,000 | 20,000 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega JPMORGAN CHASE & CO | −42,723 | 31,536 | |
| Small Arosa Capital Management LP | −40,000 | 910,000 | |
| Small Green Alpha Advisors, LLC | −4,103 | 114,580 | |
| Large CWM, LLC | −2,666 | 6 | |
| Large Pathstone Holdings, LLC | −1,534 | 87,448 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small HEIGHTS CAPITAL MANAGEMENT, INC | 963,495 | $1,127,289 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 634,720 | $742,622 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 69,402 | $81,200 | |
| Mid Virtu Financial LLC | 18,679 | $21,854 | |
| Small TWO SIGMA SECURITIES, LLC | 16,592 | $19,412 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 485,919 | $913,527 | |
| Mega JANE STREET GROUP, LLC | 109,012 | $204,942 | |
| Mid XTX Topco Ltd | 49,609 | $93,264 | |
| Mid Engineers Gate Manager LP | 16,498 | $31,016 | |
| Mega MILLENNIUM MANAGEMENT LLC | 10,111 | $19,008 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Large SOFTBANK GROUP CORP. Bank | $2,804,466 | 31.49% | 2,396,980 | Shares | Defined | 2026-05-15 | ||||
| Large Alyeska Investment Group, L.P. | $1,638,000 | 18.40% | 1,400,000 | Shares | Sole | 2026-05-15 | ||||
| Small HEIGHTS CAPITAL MANAGEMENT, INC | $1,127,289 | 12.66% | 963,495 | Shares | Other | 2026-05-15 | ||||
| Small Arosa Capital Management LP | $1,064,700 | 11.96% | 910,000 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $742,622 | 8.34% | 634,720 | Shares | Defined | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $261,565 | 2.94% | 223,561 | Shares | Defined | 2026-05-15 | ||||
| Mid Shay Capital LLC | $210,600 | 2.37% | 180,000 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS Group AG | $174,655 | 1.96% | 149,279 | Shares | Defined | 2026-05-05 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $170,326 | 1.91% | 145,578 | Shares | Sole | 2026-05-08 | ||||
| Small Green Alpha Advisors, LLC | $134,058 | 1.51% | 114,580 | Shares | Sole | 2026-04-07 | ||||
| Large Pathstone Holdings, LLC | $102,314 | 1.15% | 87,448 | Shares | Sole | 2026-05-11 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $81,200 | 0.91% | 69,402 | Shares | Defined | 2026-05-08 | ||||
| Mega FMR LLC | $61,411 | 0.69% | 52,489 | Shares | Defined | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $58,932 | 0.66% | 50,370 | Shares | Sole | 2026-05-13 | ||||
| Mega STATE STREET CORP | $54,960 | 0.62% | 46,975 | Shares | Defined | 2026-05-15 | ||||
| Mega JPMORGAN CHASE & CO | $36,896 | 0.41% | 31,536 | Shares | Defined | 2026-05-13 | ||||
| Mega NORTHERN TRUST CORP Bank | $36,666 | 0.41% | 31,339 | Shares | Defined | 2026-05-14 | ||||
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | $23,400 | 0.26% | 20,000 | Shares | Sole | 2026-05-15 | ||||
| Mid Virtu Financial LLC | $21,854 | 0.25% | 18,679 | Shares | Defined | 2026-05-14 | ||||
| Small TWO SIGMA SECURITIES, LLC Broker-Dealer | $19,412 | 0.22% | 16,592 | Shares | Sole | 2026-05-15 | ||||
| Micro PRIMORIS WEALTH ADVISORS, LLC | $19,305 | 0.22% | 16,500 | Shares | Sole | 2026-04-30 | ||||
| Small Resurgent Financial Advisors LLC | $18,259 | 0.21% | 15,606 | Shares | Sole | 2026-05-13 | ||||
| Mega LPL Financial LLC | $16,881 | 0.19% | 14,429 | Shares | Sole | 2026-05-06 | ||||
| Large OSAIC HOLDINGS, INC. | $7,298 | 0.08% | 6,239 | Shares | Defined | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $5,367 | 0.06% | 4,588 | Shares | Defined | 2026-05-15 | ||||
| Small Golden State Wealth Management, LLC | $3,167 | 0.04% | 2,707 | Shares | Sole | 2026-04-28 | ||||
| Large Rockefeller Capital Management L.P. | $2,368 | 0.03% | 2,024 | Shares | Defined | 2026-05-14 | ||||
| Mega Vanguard Global Advisers, LLC | $1,537 | 0.02% | 1,314 | Shares | Defined | 2026-05-08 | ||||
| Large NATIONAL BANK OF CANADA /FI/ Bank | $973 | 0.01% | 832 | Shares | Defined | 2026-05-15 | ||||
| Mid Western Wealth Management, LLC | $779 | 0.01% | 666 | Shares | Sole | 2026-05-19 | ||||
| Small Missouri Trust & Investment Co | $740 | 0.01% | 633 | Shares | Sole | 2026-05-14 | ||||
| Mid GROUP ONE TRADING LLC | $478 | 0.01% | 409 | Shares | Sole | 2026-05-13 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $444 | 0.00% | 380 | Shares | Defined | 2026-04-28 | ||||
| Small Parkside Financial Bank & Trust Bank | $272 | 0.00% | 233 | Shares | Sole | 2026-05-13 | ||||
| Mid Smartleaf Asset Management LLC | $234 | 0.00% | 200 | Shares | Sole | 2026-05-15 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $194 | 0.00% | 166 | Shares | Sole | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $190 | 0.00% | 163 | Shares | Defined | 2026-05-12 | ||||
| Mid HARBOUR INVESTMENTS, INC. | $174 | 0.00% | 149 | Shares | Sole | 2026-05-15 | ||||
| Mega ROYAL BANK OF CANADA Bank | $130 | 0.00% | 112 | Shares | Defined | 2026-05-15 | ||||
| Large NewEdge Advisors, LLC | $84 | 0.00% | 72 | Shares | Sole | 2026-06-03 | ||||
| Small Archer Investment Corp | $79 | 0.00% | 68 | Shares | Sole | 2026-05-04 | ||||
| Small WOLFF WIESE MAGANA LLC | $77 | 0.00% | 66 | Shares | Sole | 2026-04-13 | ||||
| Small MTM Investment Management, LLC | $46 | 0.00% | 40 | Shares | Sole | 2026-05-06 | ||||
| Mega WELLS FARGO & COMPANY/MN | $42 | 0.00% | 36 | Shares | Defined | 2026-05-11 | ||||
| Small HARBOR INVESTMENT ADVISORY, LLC | $38 | 0.00% | 33 | Shares | Sole | 2026-04-23 | ||||
| Mid MATHER GROUP, LLC. | $23 | 0.00% | 20 | Shares | Sole | 2026-04-13 | ||||
| Micro Signature Equity Partners, LLC | $11 | 0.00% | 10 | Shares | Sole | 2026-05-13 | ||||
| Small Hilton Head Capital Partners, LLC | $9 | 0.00% | 8 | Shares | Sole | 2026-04-20 | ||||
| Small Pinnacle Wealth Planning Services, Inc. | $7 | 0.00% | 6 | Shares | Sole | 2026-05-11 | ||||
| Large CWM, LLC | $7 | 0.00% | 6 | Shares | Sole | 2026-05-14 | ||||
| Small Coston, McIsaac & Partners | $3 | 0.00% | 3 | Shares | Sole | 2026-04-22 | ||||
| Mega CITIGROUP INC | $1 | 0.00% | 1 | Shares | Defined | 2026-05-11 | ||||
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