이오스 에너지 엔터프라이즈, Inc.
MX ˙ BMV
SecurityMX:EOSE / Eos Energy Enterprises, Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership478,415 shares
Latest Disclosed Value $ 2,372,938
XTX Topco Ltd ownership in EOSE / Eos Energy Enterprises, Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 478,415 shares of Eos Energy Enterprises, Inc. (MX:EOSE) valued at $2,372,938 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Eos Energy Enterprises, Inc..

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 478,415 478,415 2,373 0.0413
2026-02-17 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -49,444 -100.00 0 -100.00
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 49,444 37,164 302.64 563 808.06 0.0292
2025-08-12 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 12,280 12,280 63 0.0026
2024-08-12 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -63,896 -100.00 0 -100.00
2024-05-13 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 63,896 63,896 66 0.0089
2024-02-13 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -70,350 -100.00 0 -100.00
2023-11-13 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 70,350 70,350 151 0.0258
2023-02-14 2022-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -36,415 -100.00 0 -100.00
2022-11-14 2022-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 36,415 36,415 61 0.0151
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.