What is the 13F Pro Quality Score for GWH?

13F Pro ranks ESS Tech, Inc. (GWH) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View GWH's current score at https://13fpro.ai/company/GWH (free sign-up required for the full ranking).

Where does 13F Pro source GWH data?

All ESS Tech, Inc. fundamentals and ownership data come directly from SEC EDGAR. ESS Tech, Inc. files with the SEC under CIK 1819438. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is GWH in?

ESS Tech, Inc. (GWH) is classified in the Technology sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/technology.

How often is GWH research updated on 13F Pro?

GWH's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

ESS Tech, Inc.(GWH)Stock Analysis

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13F Pro Quality Score

9.6/100

Rank #2,915 of 2,962 stocks

View Technology peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Nov 14, 2026.

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Why GWH Scores 10/100

exact factor attribution · 2026-09-11

GWH's composite is driven by earnings growth, held back by revenue growth and free cash flow. Bars show each factor's exact push vs. a median company, using the same weights the ranking engine applies.

Earnings growth

+2.2 pts

95th pct

Institutional flow

-2.2 pts

6th pct

Shareholder dilution

-2.3 pts

3th pct

Earnings quality

-3.6 pts

14th pct

Capital efficiency

-4.8 pts

2th pct

Profitability

-6.8 pts

4th pct

Scale

-6.8 pts

4th pct

Free cash flow

-6.9 pts

4th pct

Revenue growth

-9.0 pts

5th pct

Factor percentiles are cross-sectional ranks across the ~2,800-stock scored universe, computed from SEC EDGAR filings. Not investment advice.

GWH Stock Analysis & AI Quality Score

Data updated 2026-09-11

AI stock analysis and institutional research for ESS Tech, Inc. (GWH), a Technology sector company. 13F Pro's AI-powered ranking engine scores GWH at 9.6/100 on a 32-signal composite quality model, placing it at rank #2,915 of 2,962 stocks — the bottom half of the AI-ranked universe. Based on the latest XBRL financial filings (Q2 2026), ESS Tech, Inc. reports quarterly revenue of $73.0K, net income of $-15.6M, free cash flow of $-9.4M. Top institutional holders of GWH by reported 13-F value include SOFTBANK GROUP, Alyeska Investment Group, L.P., VANGUARD CAPITAL MANAGEMENT, based on the most recent SEC filings. GWH trades on the NYSE exchange and files with the SEC under CIK 1819438. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate GWH daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for ESS Tech, Inc. directly from SEC EDGAR. ESS Tech, Inc.'s 13F Pro composite quality score has ranged between 6 and 29 since 2024, currently 9.6 — a stable long-term trajectory across 15 quarterly and live scoring snapshots.

Revenue

Q2 2026

$73.0K

Net Income

Q2 2026

$-15.6M

Free Cash Flow

Q2 2026

$-9.4M

Period

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro

Revenue

-74.9% YoY

$1.6MFY 2025

FY22 $894.0KFY23 $7.5MFY24 $6.3MFY25 $1.6M

Net Income

+26.4% YoY

$-63.4MFY 2025

FY22 $-78.0MFY23 $-77.6MFY24 $-86.2MFY25 $-63.4M

Operating Income

+36.1% YoY

$-57.4MFY 2025

FY22 $-105.5MFY23 $-85.9MFY24 $-89.8MFY25 $-57.4M

EPS (Diluted)

+40.7% YoY

$-4.34FY 2025

FY22 $-0.51FY23 $-7.27FY24 $-7.32FY25 $-4.34

Total Assets

-28.7% YoY

$51.2MFY 2025

FY22 $173.6MFY23 $143.2MFY24 $71.8MFY25 $51.2M

Total Debt

—FY 2025

FY22 $3.5MFY23 $0.00FY24 —FY25 —

Op. Cash Flow

+30.4% YoY

$-50.3MFY 2025

FY22 $-81.6MFY23 $-54.9MFY24 $-72.2MFY25 $-50.3M

Free Cash Flow

+32.5% YoY

$-53.7MFY 2025

FY22 $-95.8MFY23 $-60.7MFY24 $-79.5MFY25 $-53.7M

Metric	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021	FY 2020
Revenue	$1.6M -74.9%	$6.3M -16.5%	$7.5M +743.4%	$894.0K	$0.00	$0.00
Net Income	$-63.4M +26.4%	$-86.2M -11.1%	$-77.6M +0.5%	$-78.0M +83.7%	$-477.1M -1468.5%	$-30.4M
Operating Income	$-57.4M +36.1%	$-89.8M -4.5%	$-85.9M +18.6%	$-105.5M -74.1%	$-60.6M -248.4%	$-17.4M
EPS (Diluted)	$-4.34 +40.7%	$-7.32 -0.7%	$-7.27 -1325.5%	$-0.51 +91.1%	$-5.73 -1001.9%	$-0.52
Total Assets	$51.2M -28.7%	$71.8M -49.9%	$143.2M -17.5%	$173.6M -30.6%	$250.2M -0.3%	$250.8M
Total Debt	—	—	$0.00 -100.0%	$3.5M -38.0%	$5.7M -50.2%	$11.4M
Operating Cash Flow	$-50.3M +30.4%	$-72.2M -31.6%	$-54.9M +32.7%	$-81.6M -57.4%	$-51.8M -211.5%	$-16.6M
Free Cash Flow	$-53.7M +32.5%	$-79.5M -31.0%	$-60.7M +36.7%	$-95.8M -75.4%	$-54.6M -218.5%	$-17.1M

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Available Research

13F Pro tracks comprehensive data for ESS Tech, Inc. including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of GWH

SOFTBANK GROUP CORP.
$2.3M2,396,980 sh
Alyeska Investment Group, L.P.
$1.3M1,400,000 sh
VANGUARD CAPITAL MANAGEMENT LLC
$607.0K638,920 sh
UBS Group AG
$572.5K602,607 sh
Arosa Capital Management LP
$522.5K550,000 sh
HEIGHTS CAPITAL MANAGEMENT, INC
$521.2K548,621 sh
Shay Capital LLC
$199.6K210,146 sh
GEODE CAPITAL MANAGEMENT, LLC
$199.5K210,037 sh
BlackRock, Inc.
$127.2K133,867 sh
VANGUARD FIDUCIARY TRUST CO
$123.4K129,877 sh

Fund	Value	Shares
SOFTBANK GROUP CORP.	$2.3M	2,396,980
Alyeska Investment Group, L.P.	$1.3M	1,400,000
VANGUARD CAPITAL MANAGEMENT LLC	$607.0K	638,920
UBS Group AG	$572.5K	602,607
Arosa Capital Management LP	$522.5K	550,000
HEIGHTS CAPITAL MANAGEMENT, INC	$521.2K	548,621
Shay Capital LLC	$199.6K	210,146
GEODE CAPITAL MANAGEMENT, LLC	$199.5K	210,037
BlackRock, Inc.	$127.2K	133,867
VANGUARD FIDUCIARY TRUST CO	$123.4K	129,877

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Is GWH a good stock to buy?

13F Pro's AI-powered analysis of ESS Tech, Inc. (GWH) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Technology sector (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for GWH are available on the GWH stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing. GWH is classified as a small company.

Which hedge funds own GWH?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling GWH. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of ESS Tech, Inc.'s investment landscape.