Eos Energy Enterprises, Inc.

EOSE • NASDAQ

Eos Energy Enterprises, Inc. is a electrical equipment & parts company in the industrials sector on NASDAQ, led by Joe Mastrangelo, with a market cap of $4.8B. As of Q3 2025, 55% of shares are held by 265 institutional investors, with BlackRock, Inc. as the largest holder at 6.59%.

Chief Executive OfficerJoe Mastrangelo

Market Cap$4.8B

Electrical Equipment & Parts

Industrials

Employees420.0

Websiteeose.com

Country

United States of America

Overview

Overview of institutional ownership in EOSE as of Q3 2025 with a market cap of $3.2B

All Institutions

Institutions: 265
Value Held: $1.7B
Shares Held: 152.1M
Avg Position: $6.5M
Median Position: $513.2K

Hedge Funds

Hedge Funds: 40
Value Held: $466.8M
Shares Held: 41.0M
Avg Position: $11.7M
Median Position: $3.2M

Ownership Breakdown

Institutional (non-HF)

39.84%

$1.3B

Hedge Funds

14.68%

$466.8M

Retail & Other

45.48%

$1.4B

Based on market cap of $3.2B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in EOSE as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$209.7M 0.00% of portfolio	6.59% 18.4M shares	Q1 2021 Held for 4y 8m	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$177.0M 0.00% of portfolio	5.56% 15.5M shares	Q4 2020 Held for 4y 11m	$6.69T
R Rubric Capital Management LP Hedge Fund•Long/Short	Margaret Kossakowski CFO	$117.3M 1.69% of portfolio	3.69% 10.3M shares	Q3 2025 Held for 2 months	$6.9B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$82.5M 0.00% of portfolio	2.60% 7.2M shares	Q1 2021 Held for 4y 8m	$2.88T
Electron Capital Partners, LLC Hedge Fund•Long/Short	Ran Nmn Zhou Managing Partner	$75.1M 3.40% of portfolio	2.36% 6.6M shares	Q3 2022 Held for 3y 2m	$2.2B
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven	Stephen Thomas Weber CEO	$74.8M 0.54% of portfolio	2.35% 6.6M shares	Q1 2025 Held for 8 months	$13.9B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$70.7M 0.00% of portfolio	2.22% 6.2M shares	Q4 2020 Held for 4y 11m	$1.57T
S STIFEL FINANCIAL CORP Long Only Manager	Adam Vartan Topalian CIO	$52.7M 0.05% of portfolio	1.66% 4.6M shares	Q4 2022 Held for 2y 11m	$109.37B
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$49.0M 0.00% of portfolio	1.54% 4.3M shares	Q4 2020 Held for 4y 11m	$1.65T
B BNP PARIBAS ARBITRAGE, SA Institution	-	$37.8M 0.03% of portfolio	1.19% 3.3M shares	Q4 2024 Held for 11 months	$126.06B

Net Capital Flow

Institutional buying and selling activity for EOSE in Q3 2025

Traded: +$269.2M
Buyers: 173
Sellers: 88
Total Bought: +$514.0M
Total Sold: −$244.8M
Avg Position: $5.9M

Biggest Buyers

Institution	Net Bought	Current Position
R Rubric Capital Management LP Hedge Fund•Long/Short	+$117.3M +10.3M shares	$117.3M 10.3M shares
B BlackRock, Inc. Institution	+$26.3M +2.3M shares	$209.7M 18.4M shares
VANGUARD GROUP INC Institution	+$25.3M +2.2M shares	$177.0M 15.5M shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	+$24.3M +2.1M shares	$25.6M 2.2M shares
B BNP PARIBAS ARBITRAGE, SA Institution	+$24.1M +2.1M shares	$37.8M 3.3M shares
ARDSLEY ADVISORY PARTNERS Hedge Fund•Long/Short	+$18.1M +1.6M shares	$18.1M 1.6M shares
M MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Institution	+$18.1M +1.6M shares	$18.1M 1.6M shares
SCHWAB CHARLES INVESTMENT MANAGEMENT INC Long Only Manager	+$16.9M +1.5M shares	$24.6M 2.2M shares
STATE STREET CORP Institution	+$16.4M +1.4M shares	$82.5M 7.2M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$14.4M +1.3M shares	$31.7M 2.8M shares

Biggest Sellers

Institution	Net Sold	Current Position
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	−$62.5M −5.5M shares	$8.6M 758.7K shares
UBS Group AG Institution	−$29.8M −2.6M shares	$37.3M 3.3M shares
GOLDMAN SACHS GROUP INC Institution	−$20.5M −1.8M shares	$32.2M 2.8M shares
Engineers Gate Manager LP Hedge Fund•Quant	−$20.0M −1.8M shares	$6.3M 554.8K shares
A Alyeska Investment Group, L.P. Hedge Fund•Multi-Strategy	−$13.7M −1.2M shares	$3.7M 324.5K shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$9.9M −869.3K shares	$6.2M 548.1K shares
BARCLAYS PLC Institution	−$9.9M −866.1K shares	$4.2M 371.3K shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$8.2M −717.2K shares	$3.5M 308.9K shares
D D. E. Shaw & Co., Inc. Institution	−$8.1M −1.6M shares	Sold Off 0 shares
G GROUP ONE TRADING, L.P. Institution	−$7.9M −695.3K shares	$15.9M 1.4M shares

Entry and Exit Activity

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

New Positions: 54
New Value: $167.5M
Exited Positions: 28
Exited Value: $25.0M

New Positions

Institution	Position Value
R Rubric Capital Management LP Hedge Fund•Long/Short	$117.3M 10.3M shares
Z Zweig-DiMenna Associates LLC Hedge Fund•Long/Short	$11.6M 1.0M shares
S Skaana Management L.P. Hedge Fund•Convert Bond Arb	$4.9M 432.2K shares
C CAXTON ASSOCIATES LLP Institution	$3.5M 309.2K shares
Trexquant Investment LP Hedge Fund•Quant	$3.0M 259.2K shares
M MIRAE ASSET SECURITIES INC. Institution	$2.9M 255.2K shares
Lido Advisors, LLC RIA/Wealth	$2.7M 241.1K shares
CITIZENS FINANCIAL GROUP INC/RI Institution	$2.7M 239.1K shares
E Erste Asset Management GmbH Institution	$2.6M 235.0K shares
UDINE WEALTH MANAGEMENT, INC. RIA/Wealth	$2.0M 176.9K shares

Exited Positions

Institution	Previous Position
D D. E. Shaw & Co., Inc. Institution	$8.1M 1.6M shares
E EVR Research LP Hedge Fund•Long/Short	$3.9M 760.0K shares
J J. Goldman & Co LP Hedge Fund•Multi-Strategy	$3.7M 720.4K shares
J Jump Financial, LLC Institution	$2.6M 508.2K shares
S SABBY MANAGEMENT, LLC Institution	$1.8M 342.3K shares
W Winton Capital Group Ltd Institution	$953.8K 186.3K shares
ZAZOVE ASSOCIATES LLC Hedge Fund•Multi-Strategy	$896.0K 175.0K shares
Concurrent Investment Advisors, LLC RIA/Wealth	$548.0K 107.0K shares
W WOLVERINE TRADING, LLC Institution	$496.4K 112.6K shares
Aster Capital Management Ltd RIA/Wealth	$449.0K 87.7K shares

Options Activity

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

Call Positions: 33
Call Value: $347.6M
Put Positions: 25
Put Value: $341.1M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$94.3M 82.8K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$53.6M 47.0K contracts
Caption Management, LLC Hedge Fund•Long/Short	$41.9M 36.8K contracts
J JANE STREET GROUP, LLC Institution	$41.5M 36.4K contracts
P PEAK6 LLC Institution	$29.7M 26.0K contracts
Walleye Trading LLC RIA/Wealth	$28.9M 25.4K contracts
D D. E. Shaw & Co., Inc. Institution	$12.7M 11.1K contracts
N NOMURA HOLDINGS INC Institution	$5.7M 5.0K contracts
Arosa Capital Management LP Hedge Fund•Multi-Strategy	$4.6M 4.0K contracts
BARCLAYS PLC Institution	$4.3M 3.8K contracts

Put Positions

Institution	Position Value
Graham Capital Management, L.P. Hedge Fund•Multi-Strategy	$88.2M 77.4K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$62.6M 54.9K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$60.9M 53.5K contracts
J JANE STREET GROUP, LLC Institution	$21.0M 18.5K contracts
Caption Management, LLC Hedge Fund•Long/Short	$20.9M 18.3K contracts
Walleye Trading LLC RIA/Wealth	$20.1M 17.7K contracts
S Skaana Management L.P. Hedge Fund•Convert Bond Arb	$12.6M 11.1K contracts
D D. E. Shaw & Co., Inc. Institution	$11.9M 10.4K contracts
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	$10.2M 8.9K contracts
N Nokomis Capital, L.L.C. Hedge Fund•Long/Short	$5.4M 4.8K contracts

Most Committed Institutions

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

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
BRIGHTLINE CAPITAL MANAGEMENT, LLC Hedge Fund•Value	Nick Nmn Khera CEO	8.19% $20.0M	0.63% 1.8M shares	Q3 2024 Held for 1y 2m	$244.0M
S Skaana Management L.P. Hedge Fund•Convert Bond Arb	Daniel Charles Katzner CIO	6.64% $4.9M	0.15% 432.2K shares	Q3 2023 Held for 2y 2m	$74.1M
AMERICAN FINANCIAL GROUP INC Institution	S. Craig Lindner CEO	4.41% $11.2M	0.35% 981.6K shares	Q4 2020 Held for 4y 11m	$253.5M
Lauer Wealth, LLC RIA/Wealth	Richard Thomas Lauer President	4.41% $6.0M	0.12% 326.4K shares	Q1 2025 Held for 8 months	$135.4M
Electron Capital Partners, LLC Hedge Fund•Long/Short	Ran Nmn Zhou Managing Partner	3.40% $75.1M	2.36% 6.6M shares	Q3 2022 Held for 3y 2m	$2.2B
ARDSLEY ADVISORY PARTNERS Hedge Fund•Long/Short	Steven Nicholas Napoli CFO	2.83% $18.1M	0.57% 1.6M shares	Q3 2025 Held for 2 months	$641.4M
KEMPNER CAPITAL MANAGEMENT INC. Long Only Manager	Vera Delynn Greene President	1.92% $2.0M	0.06% 175.0K shares	Q4 2022 Held for 2y 11m	$103.7M
Copperleaf Capital, LLC RIA/Wealth	Ryan Gary Peterson President	1.82% $3.6M	0.11% 320.2K shares	Q2 2025 Held for 5 months	$200.3M
R Rubric Capital Management LP Hedge Fund•Long/Short	Margaret Kossakowski CFO	1.69% $117.3M	3.69% 10.3M shares	Q3 2025 Held for 2 months	$6.9B
UDINE WEALTH MANAGEMENT, INC. RIA/Wealth	Scott Robert Udine President	0.97% $2.0M	0.06% 176.9K shares	Q3 2025 Held for 2 months	$208.4M

Hedge Fund Spotlight

Discover hedge funds investing in EOSE

ALGERT COLDIRON INVESTORS LLC

Hedge Fund • Quant

Portfolio ManagerRyan Zentner Lafond

Portfolio Value: $6.0B
Positions: 1,110
Last Reported: Q3 2025

Sector Allocation

Position in Eos Energy Enterprises, Inc.

Market Value: $1.8M
Shares Held: 154.3K
Portfolio Weight: 0.03%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Nextpower Inc. NXT	Solar Energy	$40.8M	0.68%
2 Mueller Industries MLI	Manufacturing - Metal Fabrication Industrials	$38.9M	0.65%
3 Credo Technology Group Holding Ltd CRDO	Communication Equipment Technology	$38.7M	0.64%