Who owns Eos Energy Enterprises, Inc. (EOSE)
Which tracked institutional funds hold EOSE, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See EOSE company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on EOSE is one-sided between 2025-Q4 and 2026-Q1: 37 added or opened and 143 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
EOSE’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes EOSE more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in EOSE divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 314 tracked filers holding EOSE, 207 increased or opened the position and 159 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in EOSE between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 19
- VANGUARD CAPITAL MANAGEMENT LLC$74M
- Crystal Cove Asset Management, LLC$21M
- VANGUARD PORTFOLIO MANAGEMENT LLC$14M
- Marex Group plc$14M
- VANGUARD FIDUCIARY TRUST CO$11M
- RENAISSANCE TECHNOLOGIES LLC$9M
Full exits 29
- VANGUARD GROUP INC$185M
- Rubric Capital Management LP$74M
- TWO SIGMA ADVISERS, LP$37M
- VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.$22M
- NewEdge Advisors, LLC$21M
- Graham Capital Management, L.P.$21M
Largest adds
- MARSHALL WACE, LLP$31M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$15M
- Point72 Asset Management, L.P.$13M
- TUDOR INVESTMENT CORP ET AL$9M
- TWO SIGMA INVESTMENTS, LP$8M
- Quantinno Capital Management LP$5M
Largest trims
- BlackRock, Inc.$149M
- Driehaus Capital Management LLC$90M
- STATE STREET CORP$48M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$44M
- GEODE CAPITAL MANAGEMENT, LLC$44M
- Electron Capital Partners, LLC$43M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 24,083,779 | $119M | 8.5% | 2026-Q1 |
| Driehaus Capital Management LLC added | 14,869,170 | $74M | 5.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 14,835,437 | $74M | 5.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 14,074,001 | $70M | 5.0% | 2026-Q1 |
| STATE STREET CORP added | 8,017,930 | $40M | 2.8% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 7,812,894 | $39M | 2.8% | 2026-Q1 |
| MARSHALL WACE, LLP added | 6,611,495 | $33M | 2.3% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 6,350,481 | $31M | 2.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 6,100,772 | $30M | 2.2% | 2026-Q1 |
| Electron Capital Partners, LLC trimmed | 5,379,661 | $27M | 1.9% | 2026-Q1 |
| Crystal Cove Asset Management, LLC new | 4,298,487 | $21M | 1.5% | 2026-Q1 |
| STIFEL FINANCIAL CORP trimmed | 4,138,555 | $21M | 1.5% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 3,444,846 | $17M | 1.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 3,134,700 | $16M | 1.1% | 2026-Q1 |
| GROUP ONE TRADING LLC added | 3,007,414 | $15M | 1.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 2,987,574 | $15M | 1.1% | 2026-Q1 |
| MORGAN STANLEY trimmed | 2,960,784 | $15M | 1.0% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,842,808 | $14M | 1.0% | 2026-Q1 |
| Marex Group plc added | 2,759,960 | $14M | 1.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 2,725,293 | $14M | 1.0% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,631,071 | $13M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 2,489,945 | $12M | 0.9% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 2,241,141 | $11M | 0.8% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 2,165,101 | $11M | 0.8% | 2026-Q1 |
| UBS Group AG added | 1,897,473 | $9M | 0.7% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,845,231 | $9M | 0.7% | 2026-Q1 |
| Polar Capital Holdings Plc added | 1,690,000 | $8M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 1,607,820 | $8M | 0.6% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 1,537,606 | $8M | 0.5% | 2026-Q1 |
| Invesco Ltd. added | 1,471,887 | $7M | 0.5% | 2026-Q1 |
| CAPITAL FUND MANAGEMENT S.A. added | 1,434,592 | $7M | 0.5% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 1,368,501 | $7M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,247,548 | $6M | 0.4% | 2026-Q1 |
| BARINGS LLC | 1,204,430 | $6M | 0.4% | 2026-Q1 |
| DNB Asset Management AS added | 1,191,468 | $6M | 0.4% | 2026-Q1 |
| Walleye Trading LLC added | 1,188,056 | $6M | 0.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,117,889 | $6M | 0.4% | 2026-Q1 |
| Quantinno Capital Management LP added | 1,078,070 | $5M | 0.4% | 2026-Q1 |
| Legal & General Group Plc trimmed | 1,045,699 | $5M | 0.4% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,033,456 | $5M | 0.4% | 2026-Q1 |
| Baker Avenue Asset Management, LP trimmed | 1,003,090 | $5M | 0.4% | 2026-Q1 |
| SIMPLEX TRADING, LLC trimmed | 984,329 | $5M | 0.3% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 933,778 | $5M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 879,520 | $4M | 0.3% | 2026-Q1 |
| IMC-Chicago, LLC added | 828,916 | $4M | 0.3% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 355,000 | $4M | 0.3% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 855,423 | $4M | 0.3% | 2026-Q1 |
| Baird Financial Group, Inc. added | 789,141 | $4M | 0.3% | 2026-Q1 |
| Nuveen, LLC trimmed | 735,219 | $4M | 0.3% | 2026-Q1 |
| Arosa Capital Management LP added | 726,033 | $4M | 0.3% | 2026-Q1 |
| Alyeska Investment Group, L.P. added | 694,968 | $3M | 0.2% | 2026-Q1 |
| LPL Financial LLC added | 666,967 | $3M | 0.2% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 660,740 | $3M | 0.2% | 2026-Q1 |
| Swiss National Bank | 639,000 | $3M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 576,107 | $3M | 0.2% | 2026-Q1 |
| Shay Capital LLC added | 574,535 | $3M | 0.2% | 2026-Q1 |
| FMR LLC trimmed | 569,681 | $3M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 530,129 | $3M | 0.2% | 2026-Q1 |
| ALPS ADVISORS INC added | 512,045 | $3M | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 478,415 | $2M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC added | 463,209 | $2M | 0.2% | 2026-Q1 |
| &PARTNERS added | 443,412 | $2M | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 421,165 | $2M | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 452,435 | $2M | 0.1% | 2026-Q1 |
| CITIGROUP INC added | 386,873 | $2M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 376,101 | $2M | 0.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 371,796 | $2M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 365,531 | $2M | 0.1% | 2026-Q1 |
| Kestra Advisory Services, LLC added | 351,395 | $2M | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 313,807 | $2M | 0.1% | 2026-Q1 |
| ARDSLEY ADVISORY PARTNERS LP trimmed | 300,000 | $1M | 0.1% | 2026-Q1 |
| Jump Financial, LLC trimmed | 289,085 | $1M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 16,175,487 | $185M | 13.2% | 2025-Q4 stale |
| Rubric Capital Management LP trimmed | 6,500,000 | $74M | 5.3% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 3,211,785 | $37M | 2.6% | 2025-Q4 stale |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. new | 1,948,500 | $22M | 1.6% | 2025-Q4 stale |
| NewEdge Advisors, LLC trimmed | 1,865,543 | $21M | 1.5% | 2025-Q4 stale |
| Graham Capital Management, L.P. new | 1,791,515 | $21M | 1.5% | 2025-Q4 stale |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC added | 1,754,000 | $20M | 1.4% | 2025-Q3 stale |
| Zweig-DiMenna Associates LLC trimmed | 993,988 | $11M | 0.8% | 2025-Q4 stale |
| AMERICAN FINANCIAL GROUP INC trimmed | 971,928 | $11M | 0.8% | 2025-Q4 stale |
| Y-Intercept (Hong Kong) Ltd added | 506,734 | $6M | 0.4% | 2025-Q3 stale |
| ExodusPoint Capital Management, LP added | 381,819 | $4M | 0.3% | 2025-Q4 stale |
| PARK AVENUE SECURITIES LLC new | 375,870 | $4M | 0.3% | 2025-Q4 stale |
| EVR Research LP added | 760,000 | $4M | 0.3% | 2025-Q2 stale |
| J. Goldman & Co LP new | 720,360 | $4M | 0.3% | 2025-Q2 stale |
| Copperleaf Capital, LLC | 320,200 | $4M | 0.3% | 2025-Q3 stale |
| Trexquant Investment LP new | 259,234 | $3M | 0.2% | 2025-Q3 stale |
| BI Asset Management Fondsmaeglerselskab A/S new | 257,219 | $3M | 0.2% | 2025-Q4 stale |
| Counterpoint Mutual Funds LLC added | 254,192 | $3M | 0.2% | 2025-Q4 stale |
| MIRAE ASSET SECURITIES (USA) INC. new | 255,206 | $3M | 0.2% | 2025-Q3 stale |
| Empery Asset Management, LP new | 249,726 | $3M | 0.2% | 2025-Q4 stale |
| Aquatic Capital Management LLC added | 244,234 | $3M | 0.2% | 2025-Q3 stale |
| Erste Asset Management GmbH new | 235,000 | $3M | 0.2% | 2025-Q3 stale |
| CoreCommodity Management, LLC trimmed | 161,649 | $2M | 0.1% | 2025-Q4 stale |
| Schonfeld Strategic Advisors LLC added | 486,898 | $2M | 0.1% | 2025-Q1 stale |
| SABBY MANAGEMENT, LLC trimmed | 342,303 | $2M | 0.1% | 2025-Q2 stale |
| UDINE WEALTH MANAGEMENT, INC. trimmed | 151,006 | $2M | 0.1% | 2025-Q4 stale |
| NATIXIS ADVISORS, LLC new | 144,586 | $2M | 0.1% | 2025-Q4 stale |
| CAXTON ASSOCIATES LLP trimmed | 144,541 | $2M | 0.1% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.