Solaris Energy Infrastructure, Inc.
MX ˙ BMV ˙ US83418M1036
SecurityMX:SEI / Solaris Energy Infrastructure, Inc.
InstitutionGuggenheim Capital Llc
Latest Disclosed Ownership20,224 shares
Latest Disclosed Value $ 1,142,858
Guggenheim Capital Llc reports 140.79% increase in ownership of SEI / Solaris Energy Infrastructure, Inc.

On May 15, 2026 - Guggenheim Capital Llc filed a 13F-HR form disclosing ownership of 20,224 shares of Solaris Energy Infrastructure, Inc. (MX:SEI) valued at $1,142,858 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 8,399 shares of Solaris Energy Infrastructure, Inc.. This represents a change in shares of 140.79% during the quarter.

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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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 20,224 11,825 140.79 1,143 195.85 0.0044
2026-02-17 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 8,399 2,225 36.04 386 56.91 0.0014
2025-11-13 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 6,174 -1,199 -16.26 247 18.27 0.0018
2025-08-13 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 7,373 7,373 209 0.0017
2023-05-10 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 0 -32,875 -100.00 0 -100.00
2023-02-14 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 32,875 -19,269 -36.95 326 -33.20 0.0029
2022-11-14 2022-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 52,144 6,475 14.18 488 -1.81 0.0045
2022-08-15 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 45,669 10,489 29.82 497 25.19 0.0039
2022-05-16 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 35,180 4,967 16.44 397 100.51 0.0024
2022-02-14 2021-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 30,213 -62,769 -67.51 198 -74.45 0.0010
2021-11-15 2021-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 92,982 5,760 6.60 775 -8.82 0.0047
2021-08-13 2021-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 87,222 65,330 298.42 850 215.99 0.0050
2021-05-13 2021-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 21,892 5,050 29.98 269 96.35 0.0018
2021-02-16 2020-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 16,842 -935 -5.26 137 21.24 0.0009
2020-11-13 2020-09-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 17,777 -39 -0.22 113 -14.39 0.0008
2020-08-14 2020-06-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 17,816 4,503 33.82 132 88.57 0.0010
2020-06-02 2020-03-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 13,313 1,267 10.52 70 -58.58 0.0007
2020-02-20 2019-12-31 13F/A-1 SOLARIS OILFIELD INFRSTR COM CL A 83418M103 12,046 12,046 169 0.0013
2020-02-14 2019-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 12,046 169 0.0010
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.