ESS Tech Ownership | Who Owns ESS Tech?

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ESS Tech Ownership Summary

ESS Tech is owned by 30.13% institutional investors, 23.85% insiders, and 46.02% retail investors. Softbank group is the largest institutional shareholder, holding 19.53% of GWH shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.21% of its assets in ESS Tech shares.

GWH Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	ESS Tech	30.13%	23.85%	46.02%
Sector	Industrials Stocks	46.77%	12.62%	40.60%
Industry	Electrical Equipment Stocks	25.42%	18.45%	56.13%
Idea	Energy Storage Stocks List	25.96%	20.07%	53.97%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Softbank group	2.40M	19.53%	$3.64M
Arosa capital management lp	675.42K	5.50%	$1.03M
Vanguard group	264.33K	2.15%	$401.78K
Millennium management	1.78M	1.02%	$1.45M
Blackrock	835.49K	0.48%	$683.35K
Geode capital management	56.81K	0.46%	$86.37K
Blackrock funding, inc. /de	53.15K	0.43%	$80.79K
Fmr	52.48K	0.43%	$79.78K
Jane street group	48.96K	0.40%	$74.42M
Goldman sachs group	636.48K	0.36%	$520.57K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Arosa capital management lp	675.42K	0.23%	$1.03M
Green alpha advisors	10.63K	0.02%	$16.16K
Softbank group	2.40M	0.01%	$3.64M
Xtx topco	20.86K	0.00%	$31.71K
Millennium management	1.78M	0.00%	$1.45M
Golden state wealth management	2.72K	0.00%	$4.13K
Missouri trust & investment	633.00	0.00%	$962.00
Tower research capital llc (trc)	4.65K	0.00%	$7.07K
Charles schwab investment management	569.56K	0.00%	$465.84K
Blair william & co/il	21.25K	0.00%	$17.38K

Top Buyers

Holder	Shares	% Assets	Change
Millennium management	1.78M	0.00%	1.67M
Arosa capital management lp	675.42K	0.23%	675.42K
Goldman sachs group	636.48K	0.00%	475.90K
Aqr capital management	102.26K	0.00%	102.26K
Jane street group	48.96K	-	48.96K

Top Sellers

Holder	Shares	% Assets	Change
Blackrock	835.49K	-	-4.80M
Baird financial group	-	-	-367.52K
Nuveen asset management	-	-	-276.60K
Bank of new york mellon	-	-	-259.81K
Y-intercept (hong kong)	-	-	-208.46K

New Positions

Holder	Shares	% Assets	Change	Value
Arosa capital management lp	675.42K	0.23%	675.42K	$1.03M
Aqr capital management	102.26K	0.00%	102.26K	$83.64K
Jane street group	48.96K	-	48.96K	$74.42M
Russell investments group	22.87K	-	22.87K	$18.70K
Macquarie group	4.67K	-	4.67K	$3.82K

Sold Out

Holder	Change
Newsquare capital	-5.00
Corecap advisors	-6.00
Financial gravity asset management	-12.00
Creative capital management investments	-13.00
Albion financial group /ut	-13.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	41	-8.89%	3,696,844	22.61%	30	4.80%	20	33.33%	3	-62.50%
Jun 30, 2025	46	4.55%	3,022,717	-10.23%	25	3.21%	16	220.00%	8	-38.46%
Mar 31, 2025	44	-20.00%	3,381,421	-2.76%	28	3.24%	7	-70.83%	12	20.00%
Dec 31, 2024	54	14.89%	3,477,106	6.37%	29	3.84%	23	187.50%	10	-74.36%
Sep 30, 2024	47	-53.47%	3,268,754	-93.67%	27	3.21%	8	-82.61%	39	39.29%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	162.28K	1.21%	-3.55K
Fidelity Select Technology	52.48K	0.37%	-
Vanguard Institutional Extnd Mkt Idx Tr	43.09K	0.32%	-19.64K
Fidelity Extended Market Index	25.14K	0.18%	-177.00
NT R2000 Value Index Fund - NL	279.54K	0.16%	5.86K
NT R2000 Index Fund - NL	224.52K	0.13%	-9.51K
NT R2000 Value Index Fund - L	184.53K	0.10%	4.69K
Northern Trust Russell 2000 Value Index	184.53K	0.10%	4.69K
BlackRock Extended Equity Market K	11.89K	0.10%	-5.00
NT R2000 Index Fund - DC - NL - 2	177.66K	0.10%	-8.19K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 18, 2024	Dresselhuys Eric P.	Chief Executive Officer	Buy	$5.23K
Sep 11, 2024	Nijhawan Sandeep	-	Sell	$40.04K
Aug 30, 2024	Teamey Kyle	-	Buy	$955.66
May 14, 2024	Teamey Kyle	-	Buy	$987.38
May 10, 2024	Quarls Harry	-	Buy	$44.99K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	1	-

GWH Ownership FAQ

Who Owns ESS Tech?

ESS Tech shareholders are primarily institutional investors at 30.13%, followed by 23.85% insiders and 46.02% retail investors. The average institutional ownership in ESS Tech's industry, Electrical Equipment Stocks, is 25.42%, which ESS Tech exceeds.

Who owns the most shares of ESS Tech?

ESS Tech’s largest shareholders are Softbank group (2.4M shares, 19.53%), Arosa capital management lp (675.42K shares, 5.50%), and Vanguard group (264.33K shares, 2.15%). Together, they hold 27.19% of ESS Tech’s total shares outstanding.

Does Blackrock own ESS Tech?

Yes, BlackRock owns 0.48% of ESS Tech, totaling 835.49K shares as of Jun 2024. This represents 0% of BlackRock's total assets, with a market value of 683.35K$. In the last quarter, BlackRock decreased its holdings by -4.804M shares, a -85.18% change.

Who is ESS Tech’s biggest shareholder by percentage of total assets invested?

Arosa capital management lp is ESS Tech’s biggest shareholder by percentage of total assets invested, with 0.23% of its assets in 675.42K ESS Tech shares, valued at 1.03M$.

Who is the top mutual fund holder of ESS Tech shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of ESS Tech shares, with 1.21% of its total shares outstanding invested in 162.28K ESS Tech shares.

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