Solaris Energy Infrastructure, Inc.
MX ˙ BMV ˙ US83418M1036
SecurityMX:SEI / Solaris Energy Infrastructure, Inc.
InstitutionTwo Sigma Advisers, Lp
Latest Disclosed Ownership553,400 shares
Latest Disclosed Value $ 25,439,798
Two Sigma Advisers, Lp reports 105.11% increase in ownership of SEI / Solaris Energy Infrastructure, Inc.

On February 17, 2026 - Two Sigma Advisers, Lp filed a 13F-HR form disclosing ownership of 553,400 shares of Solaris Energy Infrastructure, Inc. (MX:SEI) valued at $25,439,798 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 269,800 shares of Solaris Energy Infrastructure, Inc.. This represents a change in shares of 105.11% 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)
2026-02-17 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 553,400 283,600 105.11 25,440 135.92 0.0495
2025-11-14 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 269,800 58,300 27.57 10,784 80.23 0.0216
2025-08-14 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 211,500 -1,000 -0.47 5,983 29.39 0.0123
2025-05-15 2025-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 212,500 21,700 11.37 4,624 -15.79 0.0104
2025-02-14 2024-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 190,800 -94,600 -33.15 5,491 50.81 0.0127
2024-11-14 2024-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 285,400 -102,600 -26.44 3,642 9.37 0.0085
2024-08-14 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 388,000 -67,000 -14.73 3,329 -15.59 0.0074
2024-05-15 2024-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 455,000 73,700 19.33 3,945 29.95 0.0091
2024-02-14 2023-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 381,300 188,500 97.77 3,035 47.69 0.0071
2023-11-14 2023-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 192,800 28,200 17.13 2,055 49.89 0.0053
2023-08-14 2023-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 164,600 -33,200 -16.78 1,371 -18.83 0.0035
2023-05-15 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 197,800 -11,600 -5.54 1,689 -18.76 0.0044
2023-02-14 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 209,400 -22,300 -9.62 2,079 -4.15 0.0058
2022-11-14 2022-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 231,700 -19,900 -7.91 2,169 -20.75 0.0063
2022-08-15 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 251,600 198,900 377.42 2,737 360.00 0.0078
2022-05-16 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 52,700 41,700 379.09 595 726.39 0.0016
2022-02-14 2021-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 11,000 11,000 72 0.0002
2019-11-14 2019-09-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 0 -67,700 -100.00 0 -100.00
2019-08-14 2019-06-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 67,700 33,400 97.38 1,014 79.79 0.0025
2019-05-15 2019-03-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 34,300 3,000 9.58 564 49.21 0.0014
2019-02-14 2018-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 31,300 1,000 3.30 378 -33.92 0.0010
2018-11-14 2018-09-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 30,300 -9,500 -23.87 572 0.53 0.0014
2018-08-14 2018-06-30 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 39,800 -10,788 -21.33 569 -32.10 0.0015
2018-05-15 2018-03-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 50,588 7,300 16.86 838 -9.60 0.0023
2018-02-14 2017-12-31 13F SOLARIS OILFIELD INFRSTR COM CL A 83418M103 43,288 43,288 927 0.0025
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.