ESS Tech

GWH • NYSE

ESS Tech is a electrical equipment & parts company in the industrials sector on NYSE, led by Kelly F. Goodman, with a market cap of $41.0M. As of Q3 2025, 25% of shares are held by 43 institutional investors, with SOFTBANK GROUP CORP as the largest holder at 15.83%.

Interim Chief Executive Officer and Principal Executive OfficerKelly F. Goodman

Market Cap$41.0M

Electrical Equipment & Parts

Industrials

Employees231.0

Websiteessinc.com

Country

United States of America

Overview

Overview of institutional ownership in GWH as of Q3 2025 with a market cap of $23.0M

All Institutions

Institutions: 43
Value Held: $5.7M
Shares Held: 3.7M
Avg Position: $132.4K
Median Position: $3.3K

Hedge Funds

Hedge Funds: 4
Value Held: $1.2M
Shares Held: 771.1K
Avg Position: $293.0K
Median Position: $57.7K

Ownership Breakdown

Institutional (non-HF)

19.64%

$4.5M

Hedge Funds

5.09%

$1.2M

Retail & Other

75.26%

$17.3M

Based on market cap of $23.0M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in GWH as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
S SOFTBANK GROUP CORP Institution	-	$3.6M 0.01% of portfolio	15.83% 2.4M shares	Q4 2021 Held for 3y 11m	$25.9B
Arosa Capital Management LP Hedge Fund•Multi-Strategy	Till August Bechtolsheimer CEO	$1.0M 1.69% of portfolio	4.46% 675.4K shares	Q3 2025 Held for 2 months	$60.9M
VANGUARD GROUP INC Institution	Salim Ramji CEO	$401.8K 0.00% of portfolio	1.75% 264.3K shares	Q4 2021 Held for 3y 11m	$6.69T
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$86.4K 0.00% of portfolio	0.38% 56.8K shares	Q4 2021 Held for 3y 11m	$1.57T
B BlackRock, Inc. Institution	-	$80.8K 0.00% of portfolio	0.35% 53.1K shares	Q4 2021 Held for 3y 11m	$5.67T
FMR LLC Institution	-	$79.8K 0.00% of portfolio	0.35% 52.5K shares	Q4 2021 Held for 3y 11m	$1.92T
J JANE STREET GROUP, LLC Institution	-	$74.4K 0.00% of portfolio	0.32% 49.0K shares	Q3 2025 Held for 2 months	$84.1B
Yorkville Advisors Global, LP Hedge Fund•Multi-Strategy	Mark Anthony Angelo President	$73.5K 0.03% of portfolio	0.32% 48.4K shares	Q3 2025 Held for 2 months	$248.7M
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	Peter Fitzhugh Brown CEO	$41.9K 0.00% of portfolio	0.18% 27.6K shares	Q1 2023 Held for 2y 8m	$75.8B
X XTX Topco Ltd Institution	-	$31.7K 0.00% of portfolio	0.14% 20.9K shares	Q2 2025 Held for 5 months	$1.9B

Net Capital Flow

Institutional buying and selling activity for GWH in Q3 2025

Traded: +$1.1M
Buyers: 19
Sellers: 14
Total Bought: +$1.3M
Total Sold: −$165.7K
Avg Position: $103.5K

Biggest Buyers

Institution	Net Bought	Current Position
Arosa Capital Management LP Hedge Fund•Multi-Strategy	+$1.0M +675.4K shares	$1.0M 675.4K shares
J JANE STREET GROUP, LLC Institution	+$74.4K +49.0K shares	$74.4K 49.0K shares
Yorkville Advisors Global, LP Hedge Fund•Multi-Strategy	+$73.5K +48.4K shares	$73.5K 48.4K shares
VANGUARD GROUP INC Institution	+$52.4K +34.5K shares	$401.8K 264.3K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$30.1K +19.8K shares	$30.1K 19.8K shares
UBS Group AG Institution	+$16.9K +11.1K shares	$22.6K 14.9K shares
X XTX Topco Ltd Institution	+$9.3K +6.1K shares	$31.7K 20.9K shares
GEODE CAPITAL MANAGEMENT LLC ETF Provider	+$4.1K +2.7K shares	$86.4K 56.8K shares
T Tower Research Capital LLC Institution	+$2.7K +1.8K shares	$7.1K 4.6K shares
M Missouri Trust & Investment Co Institution	+$455.9 +300.0 shares	$962.0 633.0 shares

Biggest Sellers

Institution	Net Sold	Current Position
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant	−$133.0K −100.0K shares	Sold Off 0 shares
L LAIRD NORTON TRUST COMPANY, LLC RIA/Wealth	−$28.2K −21.2K shares	Sold Off 0 shares
Green Alpha Advisors, LLC Long Only Manager	−$2.7K −1.8K shares	$16.2K 10.6K shares
A Advisor Group Holdings, Inc. Institution	−$725.5 −500.0 shares	$3.3K 2.3K shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	−$463.0 −348.0 shares	Sold Off 0 shares
N NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO Institution	−$164.0 −123.0 shares	Sold Off 0 shares
MORGAN STANLEY RIA/Wealth	−$139.8 −92.0 shares	$7.9K 5.2K shares
Global Retirement Partners, LLC RIA/Wealth	−$136.7 −90.0 shares	$556.0 366.0 shares
Farther Finance Advisors, LLC RIA/Wealth	−$88.0 −66.0 shares	Sold Off 0 shares
Strategic Wealth Partners, Ltd. RIA/Wealth	−$47.0 −35.0 shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited GWH in Q3 2025

New Positions: 3
New Value: $1.1M
Exited Positions: 10
Exited Value: $162.0K

New Positions

Institution	Position Value
Arosa Capital Management LP Hedge Fund•Multi-Strategy	$1.0M 675.4K shares
Yorkville Advisors Global, LP Hedge Fund•Multi-Strategy	$73.5K 48.4K shares
Groupe la Francaise Fund of Funds	$8.0 6.0 shares

Exited Positions

Institution	Previous Position
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant	$133.0K 100.0K shares
L LAIRD NORTON TRUST COMPANY, LLC RIA/Wealth	$28.2K 21.2K shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	$463.0 348.0 shares
N NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO Institution	$164.0 123.0 shares
Farther Finance Advisors, LLC RIA/Wealth	$88.0 66.0 shares
Strategic Wealth Partners, Ltd. RIA/Wealth	$47.0 35.0 shares
ALBION FINANCIAL GROUP /UT RIA/Wealth	$18.0 13.0 shares
Creative Capital Management Investments LLC RIA/Wealth	$17.0 13.0 shares
CoreCap Advisors, LLC RIA/Wealth	$8.0 6.0 shares
CFG Asset Management LLC RIA/Wealth	$7.0 5.0 shares

Options Activity

Institutions with the largest Call and Put options positions in GWH as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with GWH as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Arosa Capital Management LP Hedge Fund•Multi-Strategy	Till August Bechtolsheimer CEO	1.69% $1.0M	4.46% 675.4K shares	Q3 2025 Held for 2 months	$60.9M
Yorkville Advisors Global, LP Hedge Fund•Multi-Strategy	Mark Anthony Angelo President	0.03% $73.5K	0.32% 48.4K shares	Q3 2025 Held for 2 months	$248.7M
Green Alpha Advisors, LLC Long Only Manager	Garvin Frederic Jabusch Founder	0.02% $16.2K	0.07% 10.6K shares	Q3 2023 Held for 2y 2m	$103.4M
S SOFTBANK GROUP CORP Institution	-	0.01% $3.6M	15.83% 2.4M shares	Q4 2021 Held for 3y 11m	$25.9B
X XTX Topco Ltd Institution	-	0.00% $31.7K	0.14% 20.9K shares	Q2 2025 Held for 5 months	$1.9B
Golden State Wealth Management, LLC RIA/Wealth	Daniel Robert Catone Managing Partner	0.00% $4.1K	0.02% 2.7K shares	Q4 2024 Held for 11 months	$903.5M
M Missouri Trust & Investment Co Institution	-	0.00% $962.0	0.00% 633.0 shares	Q4 2021 Held for 3y 11m	$338.3M
T Tower Research Capital LLC Institution	-	0.00% $7.1K	0.03% 4.6K shares	Q4 2021 Held for 3y 11m	$3.6B
J JANE STREET GROUP, LLC Institution	-	0.00% $74.4K	0.32% 49.0K shares	Q3 2025 Held for 2 months	$84.1B
W WOLFF WIESE MAGANA LLC Institution	-	0.00% $101.0	0.00% 66.0 shares	Q2 2023 Held for 2y 5m	$175.5M

Hedge Fund Spotlight

Discover hedge funds investing in GWH

Yorkville Advisors Global, LP

Hedge Fund • Multi-Strategy

Portfolio ManagerMark Anthony Angelo

Portfolio Value: $248.7M
Positions: 30
Last Reported: Q3 2025

Sector Allocation

Position in ESS Tech

Market Value: $73.5K
Shares Held: 48.4K
Portfolio Weight: 0.03%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Trump Media & Technology Group DJT	Internet Content & Information Communication Services	$101.7M	40.90%
2 Asset Entities ASST	Internet Content & Information Communication Services	$92.6M	37.23%
3 Garrett Motion Inc. GTX	Auto - Parts Consumer Cyclical	$11.2M	4.49%