Solid Power, Inc.
US ˙ NasdaqGS ˙ US83422N1054

SecuritySLDP / Solid Power, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership1,638,675 shares
Latest Disclosed Value $ 4,916,025
Citadel Advisors Llc ownership in SLDP / Solid Power, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 1,638,675 shares of Solid Power, Inc. (US:SLDP) valued at $4,916,025 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 326,901 shares of Solid Power, Inc.. This represents a change in shares of 401.28% during the quarter. The current value of the position is $4,817,704 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (SLDP) in the form of stock options. The firm currently holds call options representing 126,400 of underlying shares valued at $379,200 USD and put options representing 135,800 of underlying shares valued at $407,400 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.

SLDP / Solid Power, 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 SOLID POWER CLASS A COM 83422N105 1,638,675 1,311,774 401.28 4,916 253.92 0.0007
2026-02-17 2025-12-31 13F SOLID POWER CLASS A COM 83422N105 326,901 -760,115 -69.93 1,389 -63.17 0.0002
2025-11-14 2025-09-30 13F SOLID POWER CLASS A COM 83422N105 1,087,016 1,087,016 3,772 0.0006
2025-02-14 2024-12-31 13F SOLID POWER CLASS A COM 83422N105 0 -102,491 -100.00 0 -100.00
2024-11-14 2024-09-30 13F SOLID POWER CLASS A COM 83422N105 102,491 16,842 19.66 138 -2.13 0.0000
2024-08-14 2024-06-30 13F SOLID POWER CLASS A COM 83422N105 85,649 -156,554 -64.64 141 -71.28 0.0000
2024-05-15 2024-03-31 13F SOLID POWER CLASS A COM 83422N105 242,203 -2,767,523 -91.95 492 -88.75 0.0001
2024-02-14 2023-12-31 13F SOLID POWER CLASS A COM 83422N105 3,009,726 1,691,034 128.24 4,364 63.88 0.0009
2023-11-14 2023-09-30 13F SOLID POWER CLASS A COM 83422N105 1,318,692 -186,118 -12.37 2,664 -30.32 0.0006
2023-08-14 2023-06-30 13F SOLID POWER CLASS A COM 83422N105 1,504,810 1,504,810 3,822 0.0008
2023-05-15 2023-03-31 13F SOLID POWER CLASS A COM 83422N105 0 -499,694 -100.00 0 -100.00
2023-02-14 2022-12-31 13F SOLID POWER CLASS A COM 83422N105 499,694 -188,821 -27.42 1,269 -64.96 0.0003
2022-11-14 2022-09-30 13F SOLID POWER CLASS A COM 83422N105 688,515 610,627 783.98 3,622 764.44 0.0008
2022-08-15 2022-06-30 13F SOLID POWER CLASS A COM 83422N105 77,888 18,753 31.71 419 -18.32 0.0001
2022-05-16 2022-03-31 13F SOLID POWER CLASS A COM 83422N105 59,135 -689,652 -92.10 513 -92.16 0.0001
2022-02-14 2021-12-31 13F SOLID POWER CLASS A COM 83422N105 748,787 748,787 6,544 0.0013
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 SOLID POWER CLASS A COM Call 126,400 -1.86 379 -30.71 n/a n/a n/a
2026-02-17 2025-12-31 13F SOLID POWER CLASS A COM Call 128,800 -44.22 547 -31.71 n/a n/a n/a
2025-11-14 2025-09-30 13F SOLID POWER CLASS A COM Call 230,900 340.65 801 602.63 n/a n/a n/a
2025-08-14 2025-06-30 13F SOLID POWER CLASS A COM Call 52,400 26.88 115 165.12 n/a n/a n/a
2025-05-15 2025-03-31 13F SOLID POWER CLASS A COM Call 41,300 -43.42 43 -68.61 n/a n/a n/a
2025-02-14 2024-12-31 13F SOLID POWER CLASS A COM Call 73,000 310.11 138 470.83 n/a n/a n/a
2024-11-14 2024-09-30 13F SOLID POWER CLASS A COM Call 17,800 14.10 24 -4.00 n/a n/a n/a
2024-08-14 2024-06-30 13F SOLID POWER CLASS A COM Call 15,600 -16.13 26 -32.43 n/a n/a n/a
2024-05-15 2024-03-31 13F SOLID POWER CLASS A COM Call 18,600 38 n/a n/a n/a
2023-11-14 2023-09-30 13F SOLID POWER CLASS A COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F SOLID POWER CLASS A COM Call 15,300 -18.62 39 -32.14 n/a n/a n/a
2023-05-15 2023-03-31 13F SOLID POWER CLASS A COM Call 18,800 -25.40 57 -12.50 n/a n/a n/a
2023-02-14 2022-12-31 13F SOLID POWER CLASS A COM Call 25,200 -60.44 64 -80.90 n/a n/a n/a
2022-11-14 2022-09-30 13F SOLID POWER CLASS A COM Call 63,700 -15.07 335 -17.08 n/a n/a n/a
2022-08-15 2022-06-30 13F SOLID POWER CLASS A COM Call 75,000 11.28 404 -30.82 n/a n/a n/a
2022-05-16 2022-03-31 13F SOLID POWER CLASS A COM Call 67,400 -47.95 584 -48.41 n/a n/a n/a
2022-02-14 2021-12-31 13F SOLID POWER CLASS A COM Call 129,500 1,132 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 SOLID POWER CLASS A COM Put 135,800 -29.23 407 -50.06 n/a n/a n/a
2026-02-17 2025-12-31 13F SOLID POWER CLASS A COM Put 191,900 -9.91 816 10.28 n/a n/a n/a
2025-11-14 2025-09-30 13F SOLID POWER CLASS A COM Put 213,000 739 n/a n/a n/a
2025-08-14 2025-06-30 13F SOLID POWER CLASS A COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F SOLID POWER CLASS A COM Put 38,500 -17.20 40 -54.02 n/a n/a n/a
2025-02-14 2024-12-31 13F SOLID POWER CLASS A COM Put 46,500 956.82 88 1,640.00 n/a n/a n/a
2024-11-14 2024-09-30 13F SOLID POWER CLASS A COM Put 4,400 -76.22 6 -83.33 n/a n/a n/a
2024-08-14 2024-06-30 13F SOLID POWER CLASS A COM Put 18,500 -8.87 31 -26.83 n/a n/a n/a
2024-05-15 2024-03-31 13F SOLID POWER CLASS A COM Put 20,300 341.30 41 583.33 n/a n/a n/a
2024-02-14 2023-12-31 13F SOLID POWER CLASS A COM Put 4,600 -70.32 7 -80.65 n/a n/a n/a
2023-11-14 2023-09-30 13F SOLID POWER CLASS A COM Put 15,500 -64.69 31 -72.07 n/a n/a n/a
2023-08-14 2023-06-30 13F SOLID POWER CLASS A COM Put 43,900 -7.19 112 -21.83 n/a n/a n/a
2023-05-15 2023-03-31 13F SOLID POWER CLASS A COM Put 47,300 27.15 142 51.06 n/a n/a n/a
2023-02-14 2022-12-31 13F SOLID POWER CLASS A COM Put 37,200 -25.75 94 -64.39 n/a n/a n/a
2022-11-14 2022-09-30 13F SOLID POWER CLASS A COM Put 50,100 -11.95 264 -13.73 n/a n/a n/a
2022-08-15 2022-06-30 13F SOLID POWER CLASS A COM Put 56,900 -23.21 306 -52.34 n/a n/a n/a
2022-05-16 2022-03-31 13F SOLID POWER CLASS A COM Put 74,100 -64.66 642 -64.98 n/a n/a n/a
2022-02-14 2021-12-31 13F SOLID POWER CLASS A COM Put 209,700 1,833 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.