Eos Energy Enterprises, Inc.
MX ˙ BMV
SecurityMX:EOSE / Eos Energy Enterprises, Inc.
InstitutionWalleye Trading LLC
Latest Disclosed Ownership1,188,056 shares
Latest Disclosed Value $ 5,892,758
Walleye Trading LLC ownership in EOSE / Eos Energy Enterprises, Inc.

On May 8, 2026 - Walleye Trading LLC filed a 13F-HR form disclosing ownership of 1,188,056 shares of Eos Energy Enterprises, Inc. (MX:EOSE) valued at $5,892,758 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 738,663 shares of Eos Energy Enterprises, Inc.. This represents a change in shares of 60.84% during the quarter.

Walleye Trading 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 1,768,400 of underlying shares valued at $8,771,264 USD and put options representing 1,924,000 of underlying shares valued at $9,543,040 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.

MX: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)
2026-05-08 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 1,188,056 449,393 60.84 5,893 -30.40 0.0098
2026-02-13 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 738,663 355,011 92.53 8,465 93.75 0.0121
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 383,652 -5,467 -1.40 4,370 119.33 0.0066
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 389,119 188,210 93.68 1,992 162.45 0.0036
2025-05-14 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 200,909 183,855 1,078.08 759 825.61 0.0018
2025-02-13 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 17,054 -34,667 -67.03 83 -46.41 0.0002
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 51,721 -156,325 -75.14 154 -42.05 0.0003
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 208,046 188,119 944.04 264 1,220.00 0.0006
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 19,927 19,927 21 0.0000
2023-11-21 2023-09-30 13F/A-1 EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -29,727 -100.00 0 -100.00
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -29,727 0
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 29,727 29,727 129 0.0004
2022-08-08 2022-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -5,538 -100.00 0 -100.00
2022-05-16 2022-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 5,538 5,538 23 0.0001
2022-02-14 2021-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -5,176 -100.00 0 -100.00
2021-11-15 2021-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 5,176 5,176 73 0.0003
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
(%)
2026-05-08 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 1,768,400 -39.57 8,771 -73.85 n/a n/a n/a
2026-02-13 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 2,926,400 15.34 33,537 16.05 n/a n/a n/a
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 2,537,300 -10.49 28,900 99.12 n/a n/a n/a
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 2,834,700 175.56 14,514 273.28 n/a n/a n/a
2025-05-14 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 1,028,700 49.17 3,888 16.03 n/a n/a n/a
2025-02-13 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 689,600 66.93 3,351 173.33 n/a n/a n/a
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 413,100 16.56 1,227 172.44 n/a n/a n/a
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 354,400 28.55 450 59.01 n/a n/a n/a
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 275,700 11.62 284 5.20 n/a n/a n/a
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 247,000 381.48 269 144.55 n/a n/a n/a
2023-11-21 2023-09-30 13F/A EOS ENERGY ENTERPRISES COM CL A Call 51,300 3,846.15 110 2,100.00 n/a n/a n/a
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 51,300 110 n/a n/a n/a
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 1,300 6 n/a n/a n/a
2022-08-08 2022-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 1,800 -95.28 8 -97.21 n/a n/a n/a
2022-02-14 2021-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 38,100 18,950.00 287 9,466.67 n/a n/a n/a
2021-11-15 2021-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 200 3 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
(%)
2026-05-08 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 1,924,000 -21.45 9,543 -66.00 n/a n/a n/a
2026-02-13 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 2,449,400 38.71 28,070 39.57 n/a n/a n/a
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 1,765,800 17.88 20,112 162.25 n/a n/a n/a
2025-08-13 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 1,498,000 178.85 7,670 277.78 n/a n/a n/a
2025-05-14 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 537,200 77.35 2,031 37.91 n/a n/a n/a
2025-02-13 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 302,900 116.82 1,472 255.56 n/a n/a n/a
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 139,700 -19.80 415 87.33 n/a n/a n/a
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 174,200 55.26 221 92.17 n/a n/a n/a
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 112,200 503.23 116 475.00 n/a n/a n/a
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 18,600 -13.08 20 -56.52 n/a n/a n/a
2023-11-21 2023-09-30 13F/A EOS ENERGY ENTERPRISES COM CL A Put 21,400 756.00 46 360.00 n/a n/a n/a
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 21,400 46 n/a n/a n/a
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 2,500 11 n/a n/a n/a
2022-08-08 2022-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 6,200 -61.96 26 -78.86 n/a n/a n/a
2022-02-14 2021-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 16,300 123.29 123 20.59 n/a n/a n/a
2021-11-15 2021-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 7,300 102 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.