Solaris Energy Infrastructure, Inc.
US ˙ NYSE ˙ US83418M1036

SecuritySEI / Solaris Energy Infrastructure, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership866,490 shares
Ownership 2.30%
Dimensional Fund Advisors Lp ownership in SEI / Solaris Energy Infrastructure, Inc.

2025-01-23 - Dimensional Fund Advisors Lp has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 866,490 shares of Solaris Energy Infrastructure, Inc. (US:SEI). This represents 2.3 percent ownership of the company. In their previous filing dated 2024-02-09 , Dimensional Fund Advisors Lp had reported owning 1,540,053 shares, indicating a decrease of -43.74 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2025-01-23 2025-01-23 13G/A 1,540,053 866,490 -43.74 2.30 -54.00
2024-02-09 2024-02-09 13G 1,540,053 5.00

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-07 2026-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 871,462 142,973 19.63 49,239 47.03 0.0022
2026-02-12 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 728,489 151,157 26.18 33,488 45.11 0.0070
2025-11-12 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 577,332 -109,780 -15.98 23,078 18.71 0.0050
2025-08-12 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 687,112 209 0.03 19,440 30.04 0.0045
2025-05-13 2025-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 686,903 -179,587 -20.73 14,948 -40.06 0.0037
2025-02-13 2024-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 866,490 -465,356 -34.94 24,937 46.74 0.0060
2024-11-07 2024-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 1,331,846 -136,518 -9.30 16,994 34.89 0.0041
2024-08-09 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,468,364 70,288 5.03 12,598 3.94 0.0033
2024-05-10 2024-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,398,076 -141,977 -9.22 12,121 -1.12 0.0033
2024-02-07 2023-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,540,053 36,502 2.43 12,259 -23.52 0.0036
2023-11-09 2023-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,503,551 9,350 0.63 16,028 28.78 0.0053
2023-08-09 2023-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,494,201 55,061 3.83 12,447 1.27 0.0040
2023-05-12 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,439,140 176,102 13.94 12,290 102,316.67 0.0041
2023-02-09 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,263,038 12,016 0.96 13 -99.90 0.0037
2022-11-10 2022-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,251,022 86,748 7.45 11,710 -7.56 0.0045
2022-08-12 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM CL A 83418M103 1,164,274 193,031 19.87 12,668 15.53 0.0045
2022-05-13 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 971,243 71,892 7.99 10,965 86.16 0.0034
2022-02-09 2021-12-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 899,351 -51,058 -5.37 5,890 -25.69 0.0018
2021-11-12 2021-09-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 950,409 -199,883 -17.38 7,926 -29.26 0.0026
2021-08-12 2021-06-30 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 1,150,292 -86,629 -7.00 11,204 -26.18 0.0035
2021-05-14 2021-03-31 13F SOLARIS OILFIELD INFRASTRUCT COM 83418M103 1,236,921 -36,467 -2.86 15,177 46.41 0.0050
2021-03-08 2020-12-31 13F/A-2 SOLARIS OILFIELD INFRSTR COM 83418M103 1,273,388 -29,145 -2.24 10,366 25.53 0.0037
2021-02-11 2020-12-31 13F SOLARIS OILFIELD INFRSTR COM 83418M103 1,273,388 -29,145 10,366 3,743.6482
2020-11-12 2020-09-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 1,302,533 11,765 0.91 8,258 -13.77 0.0035
2020-08-13 2020-06-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 1,290,768 108,041 9.13 9,577 54.24 0.0042
2020-05-14 2020-03-31 13F SOLARIS OILFIELD INFRSTR COM 83418M103 1,182,727 91,218 8.36 6,209 -59.37 0.0032
2020-02-14 2019-12-31 13F SOLARIS OILFIELD INFRSTR COM 83418M103 1,091,509 78,061 7.70 15,282 12.36 0.0056
2019-11-12 2019-09-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 1,013,448 71,153 7.55 13,601 -3.65 0.0053
2019-08-13 2019-06-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 942,295 61,632 7.00 14,116 -2.50 0.0055
2019-08-12 2019-03-31 13F/A-2 SOLARIS OILFIELD INFRSTR COM 83418M103 880,663 117,405 15.38 14,478 56.89 0.0058
2019-05-10 2019-03-31 13F SOLARIS OILFIELD INFRSTR COM 83418M103 880,663 117,405 14,478
2019-02-26 2018-12-31 13F/A-1 SOLARIS OILFIELD INFRSTR COM 83418M103 763,258 137,659 22.00 9,228 -21.92 0.0042
2019-02-13 2018-12-31 13F SOLARIS OILFIELD INFRSTR COM 83418M103 763,258 137,659 9,228
2018-11-13 2018-09-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 625,599 398,370 175.32 11,818 263.97 0.0045
2018-08-10 2018-06-30 13F SOLARIS OILFIELD INFRSTR COM 83418M103 227,229 227,229 3,247 0.0013
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.