Solaris Energy Infrastructure, Inc.
MX ˙ BMV ˙ US83418M1036
SecurityMX:SEI / Solaris Energy Infrastructure, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership493,484 shares
Latest Disclosed Value $ 27,886,781
Citadel Advisors Llc ownership in SEI / Solaris Energy Infrastructure, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 493,484 shares of Solaris Energy Infrastructure, Inc. (MX:SEI) valued at $27,886,781 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,164,500 shares of Solaris Energy Infrastructure, Inc.. This represents a change in shares of -57.62% during the quarter.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (SEI) in the form of stock options. The firm currently holds call options representing 118,700 of underlying shares valued at $6,707,737 USD and put options representing 299,400 of underlying shares valued at $16,919,094 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:SEI / Solaris Energy Infrastructure, 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 SOLARIS ENERGY INFRAS COM CL A 83418M103 493,484 -671,016 -57.62 27,887 -47.91 0.0040
2026-02-17 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 1,164,500 978,183 525.01 53,532 618.84 0.0080
2025-11-14 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 186,317 140,209 304.09 7,447 471.09 0.0011
2025-08-14 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 46,108 -810,629 -94.62 1,304 -93.01 0.0002
2025-05-15 2025-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 856,737 638,607 292.76 18,643 196.99 0.0035
2025-02-14 2024-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 218,130 -17,575 -7.46 6,278 108.75 0.0011
2024-11-14 2024-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 235,705 88,649 60.28 3,008 138.46 0.0006
2024-08-14 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 147,056 24,544 20.03 1,262 18.74 0.0003
2024-05-15 2024-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 122,512 -829,796 -87.14 1,062 -85.99 0.0002
2024-02-14 2023-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 952,308 916,210 2,538.12 7,580 1,873.96 0.0015
2023-11-14 2023-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 36,098 -235,749 -86.72 385 -83.04 0.0001
2023-08-14 2023-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 271,847 32,479 13.57 2,264 10.76 0.0005
2023-05-15 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 239,368 34,026 16.57 2,044 0.25 0.0004
2023-02-14 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 205,342 140,832 218.31 2,039 237.58 0.0005
2022-11-14 2022-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 64,510 -16,277 -20.15 604 -31.29 0.0001
2022-08-15 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 80,787 -90,910 -52.95 879 -54.64 0.0002
2022-05-16 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 171,697 104,280 154.68 1,938 339.46 0.0004
2022-02-14 2021-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 67,417 8,147 13.75 441 -10.73 0.0001
2021-11-15 2021-09-30 13F SOLARIS OILFIELD INFRASTRUCT Cmn 83418M103 59,270 -48,045 -44.77 494 -52.77 0.0001
2021-08-16 2021-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 107,315 74,708 229.12 1,046 161.50 0.0002
2021-05-21 2021-03-31 13F/A-1 SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 32,607 -42,682 -56.69 400 -34.75 0.0001
2021-05-17 2021-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 32,607 -42,682 400 0.0001
2021-02-16 2020-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 75,289 -809 -1.06 613 27.18 0.0002
2020-11-16 2020-09-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 76,098 -293,885 -79.43 482 -82.45 0.0001
2020-08-14 2020-06-30 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 369,983 202,930 121.48 2,746 213.11 0.0010
2020-05-15 2020-03-31 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 167,053 47,660 39.92 877 -47.52 0.0004
2020-02-14 2019-12-31 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 119,393 -673,297 -84.94 1,671 -84.29 0.0007
2019-11-14 2019-09-30 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 792,690 792,690 10,638 0.0050
2018-11-13 2018-09-30 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 0 -65,576 -100.00 0 -100.00
2018-08-14 2018-06-30 13F/A-1 SOLARIS OILFIELD INFRSTR Cmn 83418M103 65,576 23,298 55.11 937 33.86 0.0005
2018-08-10 2018-06-30 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 65,576 23,298 937
2018-05-14 2018-03-31 13F/A-1 SOLARIS OILFIELD INFRSTR Cmn 83418M103 42,278 42,278 700 0.0004
2018-05-11 2018-03-31 13F SOLARIS OILFIELD INFRSTR Cmn 83418M103 42,278 700 0.0004
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 SOLARIS ENERGY INFRAS COM CL A Call 118,700 28.05 6,708 57.40 n/a n/a n/a
2026-02-17 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A Call 92,700 -44.89 4,261 -36.61 n/a n/a n/a
2025-11-14 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A Call 168,200 162.81 6,723 271.38 n/a n/a n/a
2025-08-14 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A Call 64,000 9.78 1,811 42.74 n/a n/a n/a
2025-05-15 2025-03-31 13F SOLARIS ENERGY INFRAS COM CL A Call 58,300 647.44 1,269 466.07 n/a n/a n/a
2025-02-14 2024-12-31 13F SOLARIS ENERGY INFRAS COM CL A Call 7,800 -11.36 224 100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F SOLARIS ENERGY INFRAS COM CL A Call 8,800 -20.72 112 17.89 n/a n/a n/a
2024-08-14 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 11,100 -29.30 95 -30.15 n/a n/a n/a
2024-05-15 2024-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 15,700 406.45 136 466.67 n/a n/a n/a
2024-02-14 2023-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 3,100 -81.98 25 -86.89 n/a n/a n/a
2023-11-14 2023-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 17,200 -16.10 183 7.65 n/a n/a n/a
2023-08-14 2023-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 20,500 6.22 171 3.66 n/a n/a n/a
2023-05-15 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 19,300 227.12 165 182.76 n/a n/a n/a
2023-02-14 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 5,900 59 n/a n/a n/a
2022-08-15 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 14,900 168 n/a n/a n/a
2021-08-16 2021-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-21 2021-03-31 13F/A SOLARIS OILFIELD INFRASTRUCT COM CL A Call 25,300 310 n/a n/a n/a
2021-05-17 2021-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Call 25,300 310 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 SOLARIS ENERGY INFRAS COM CL A Put 299,400 112.94 16,919 161.78 n/a n/a n/a
2026-02-17 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A Put 140,600 -57.88 6,463 -51.56 n/a n/a n/a
2025-11-14 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A Put 333,800 0.94 13,342 42.61 n/a n/a n/a
2025-08-14 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A Put 330,700 875.52 9,356 1,169.34 n/a n/a n/a
2025-05-15 2025-03-31 13F SOLARIS ENERGY INFRAS COM CL A Put 33,900 1,030.00 738 756.98 n/a n/a n/a
2025-02-14 2024-12-31 13F SOLARIS ENERGY INFRAS COM CL A Put 3,000 87.50 86 330.00 n/a n/a n/a
2024-11-14 2024-09-30 13F SOLARIS ENERGY INFRAS COM CL A Put 1,600 20 n/a n/a n/a
2024-08-14 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 4,000 263.64 35 325.00 n/a n/a n/a
2024-02-14 2023-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 1,100 -54.17 9 -68.00 n/a n/a n/a
2023-11-14 2023-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 2,400 -46.67 26 -32.43 n/a n/a n/a
2023-08-14 2023-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 4,500 -8.16 37 -9.76 n/a n/a n/a
2023-05-15 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 4,900 880.00 42 925.00 n/a n/a n/a
2023-02-14 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 500 5 n/a n/a n/a
2022-03-11 2021-09-30 13F/A SOLARIS OILFIELD INFRASTRUCT COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 0 0 n/a n/a n/a
2021-08-16 2021-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 23,100 -38.40 225 -51.09 n/a n/a n/a
2021-05-21 2021-03-31 13F/A SOLARIS OILFIELD INFRASTRUCT COM CL A Put 37,500 460 n/a n/a n/a
2021-05-17 2021-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A Put 37,500 460 n/a n/a n/a
2020-11-16 2020-09-30 13F SOLARIS OILFIELD INFRSTR Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F SOLARIS OILFIELD INFRSTR Cmn Put 14,400 -7.69 107 30.49 n/a n/a n/a
2020-05-15 2020-03-31 13F SOLARIS OILFIELD INFRSTR Cmn Put 15,600 82 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.