Eos Energy Enterprises, Inc.

SecurityEOSE / Eos Energy Enterprises, Inc.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership2,845 shares
Latest Disclosed Value $ 14,111
Walleye Capital LLC ownership in EOSE / Eos Energy Enterprises, Inc.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 2,845 shares of Eos Energy Enterprises, Inc. (US:EOSE) valued at $14,111 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 822,762 shares of Eos Energy Enterprises, Inc.. This represents a change in shares of -99.65% during the quarter. The current value of the position is $20,143 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (EOSE) in the form of stock options. The firm currently holds call options representing 116,000 of underlying shares valued at $575,360 USD and put options representing 16,800 of underlying shares valued at $83,328 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

EOSE / Eos Energy Enterprises, Inc. Historical Put/Call Ratio
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)
2026-05-13 2026-03-31 13F/A-1 EOS ENERGY ENTERPRISES COM CL A 29415C101 2,845 -819,917 -99.65 14 -99.85 0.0001
2026-05-08 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 2,845 -819,917 14 0.0001
2026-02-13 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 822,762 444,345 117.42 9,429 118.75 0.0289
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 378,417 358,079 1,760.64 4,310 4,044.23 0.0162
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 20,338 -410,714 -95.28 104 -93.62 0.0004
2025-05-14 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 431,052 220,183 104.42 1,629 59.08 0.0074
2025-02-13 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 210,869 194,869 1,217.93 1,025 2,078.72 0.0025
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 16,000 16,000 48 0.0001
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -246,597 -100.00 0 -100.00
2023-11-21 2023-09-30 13F/A-1 EOS ENERGY ENTERPRISES COM CL A 29415C101 246,597 -1,263,434 -83.67 530 -91.91 0.0014
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 246,597 -1,263,434 530 0.0014
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 1,510,031 1,510,031 6,554 0.0237
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A EOS ENERGY ENTERPRISES COM CL A Call 116,000 -43.17 575 -75.41 n/a n/a n/a
2026-05-08 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 116,000 575 n/a n/a n/a
2026-02-13 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 204,100 -18.49 2,339 -18.02 n/a n/a n/a
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 250,400 303.22 2,852 799.68 n/a n/a n/a
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 62,100 -16.64 318 12.81 n/a n/a n/a
2025-05-14 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 74,500 -67.04 282 -74.41 n/a n/a n/a
2025-02-13 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 226,000 1,098 n/a n/a n/a
2023-11-21 2023-09-30 13F/A EOS ENERGY ENTERPRISES COM CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 0 0 n/a n/a n/a
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 1,000,000 4,340 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A EOS ENERGY ENTERPRISES COM CL A Put 16,800 -96.13 83 -98.33 n/a n/a n/a
2026-05-08 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 16,800 83 n/a n/a n/a
2026-02-13 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 433,800 34.05 4,971 34.90 n/a n/a n/a
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 323,600 1,364.25 3,686 3,161.06 n/a n/a n/a
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 22,100 -91.24 113 -88.14 n/a n/a n/a
2025-05-14 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 252,200 -27.67 953 -43.74 n/a n/a n/a
2025-02-13 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 348,700 1,695 n/a n/a n/a
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.