Eos Energy Enterprises, Inc.

SecurityEOSE / Eos Energy Enterprises, Inc.
InstitutionCaption Management, LLC
Latest Disclosed Ownership176,400 shares
Latest Disclosed Value $ 874,944
Caption Management, LLC ownership in EOSE / Eos Energy Enterprises, Inc.

On May 15, 2026 - Caption Management, LLC filed a 13F-HR form disclosing ownership of 176,400 shares of Eos Energy Enterprises, Inc. (US:EOSE) valued at $874,944 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 914,727 shares of Eos Energy Enterprises, Inc.. This represents a change in shares of -80.72% during the quarter. The current value of the position is $1,446,480 USD.

Caption Management, 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 4,190,400 of underlying shares valued at $20,784,384 USD and put options representing 1,571,300 of underlying shares valued at $7,793,648 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)
2026-05-15 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 176,400 -738,327 -80.72 875 -91.66 0.0051
2026-02-17 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 914,727 294,007 47.37 10,483 48.26 0.0719
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 620,720 620,720 7,070 0.0551
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 0 -350,311 -100.00 0 -100.00
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 350,311 0 0.00 445 23.33 0.0069
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 350,311 -145,189 -29.30 361 -33.33 0.0055
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 495,500 349,500 239.38 540 72.52 0.0073
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A 29415C101 146,000 146,000 314 0.0048
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
(%)
2026-05-15 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 4,190,400 -19.24 20,784 -65.04 n/a n/a n/a
2026-02-17 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 5,188,400 40.97 59,459 41.84 n/a n/a n/a
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 3,680,500 -43.19 41,921 26.38 n/a n/a n/a
2025-08-14 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 6,478,400 -13.19 33,169 17.58 n/a n/a n/a
2025-05-15 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 7,463,000 153.60 28,210 97.25 n/a n/a n/a
2025-02-14 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 2,942,800 133.20 14,302 281.69 n/a n/a n/a
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 1,261,900 151.17 3,748 487.30 n/a n/a n/a
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 502,400 -0.42 638 22.93 n/a n/a n/a
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A Call 504,500 -71.16 520 -72.77 n/a n/a n/a
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A Call 1,749,500 -41.53 1,907 -70.37 n/a n/a n/a
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A Call 2,992,000 149.40 6,433 23.55 n/a n/a n/a
2023-08-14 2023-06-30 13F EOS ENERGY ENTERPRISES COM CL A Call 1,199,700 5,207 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
(%)
2026-05-15 2026-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 1,571,300 -24.43 7,794 -67.29 n/a n/a n/a
2026-02-17 2025-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 2,079,300 13.43 23,829 14.12 n/a n/a n/a
2025-11-14 2025-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 1,833,100 22.20 20,879 171.86 n/a n/a n/a
2025-08-14 2025-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 1,500,100 7,681 n/a n/a n/a
2025-05-15 2025-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 2,090,000 10,157 n/a n/a n/a
2024-11-14 2024-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-14 2024-06-30 13F EOS ENERGY ENTERPRISES COM CL A Put 465,100 0.00 591 23.17 n/a n/a n/a
2024-05-15 2024-03-31 13F EOS ENERGY ENTERPRISES COM CL A Put 465,100 -6.98 479 -12.11 n/a n/a n/a
2024-02-14 2023-12-31 13F EOS ENERGY ENTERPRISES COM CL A Put 500,000 0.00 545 -49.30 n/a n/a n/a
2023-11-14 2023-09-30 13F EOS ENERGY ENTERPRISES COM CL A Put 500,000 1,075 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.