Solaris Energy Infrastructure, Inc.
MX ˙ BMV ˙ US83418M1036
SecurityMX:SEI / Solaris Energy Infrastructure, Inc.
InstitutionKennedy Capital Management, Inc.
Latest Disclosed Ownership443,111 shares
Latest Disclosed Value $ 25,040,203
Kennedy Capital Management, Inc. reports 29.64% decrease in ownership of SEI / Solaris Energy Infrastructure, Inc.

On May 13, 2026 - Kennedy Capital Management, Inc. filed a 13F-HR form disclosing ownership of 443,111 shares of Solaris Energy Infrastructure, Inc. (MX:SEI) valued at $25,040,203 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 629,747 shares of Solaris Energy Infrastructure, Inc.. This represents a change in shares of -29.64% 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)
2026-05-13 2026-03-31 13F Solaris Energy Infrastructure CLA 83418M103 443,111 -186,636 -29.64 25,040 -13.50 0.5303
2026-02-13 2025-12-31 13F Solaris Energy Infrastructure CLA 83418M103 629,747 312,013 98.20 28,949 127.96 0.6131
2025-11-13 2025-09-30 13F Solaris Energy Infrastructure CLA 83418M103 317,734 31,622 11.05 12,700 56.89 0.2807
2025-08-13 2025-06-30 13F Solaris Energy Infrastructure CLA 83418M103 286,112 21,302 8.04 8,094 40.47 0.1930
2025-05-13 2025-03-31 13F Solaris Energy Infrastructure CLA 83418M103 264,810 45,219 20.59 5,762 -8.81 0.1376
2025-02-13 2024-12-31 13F Solaris Energy Infrastructure CLA 83418M103 219,591 -64,489 -22.70 6,320 74.37 0.1404
2024-11-14 2024-09-30 13F Solaris Energy Infrastructure CLA 83418M103 284,080 -10,329 -3.51 3,625 43.47 0.0800
2024-08-14 2024-06-30 13F SOLARIS OILFIELD INFRASTRUCTURE, INC. CLA 83418M103 294,409 -1,188 -0.40 2,526 -1.41 0.0540
2024-05-15 2024-03-31 13F Solaris Oilfield Infrastructure, Inc. CLA 83418M103 295,597 -3,649 -1.22 2,563 7.60 0.0527
2024-02-14 2023-12-31 13F Solaris Oilfield Infrastructure, Inc. COM 83418M103 299,246 -791 -0.26 2,382 -25.55 0.0520
2023-11-14 2023-09-30 13F Solaris Oilfield Infrastructure, Inc. CLA 83418M103 300,037 -21,378 -6.65 3,198 19.46 0.0780
2023-08-14 2023-06-30 13F Solaris Oilfield Infrastructure, Inc. CLA 83418M103 321,415 18,165 5.99 2,677 3.40 0.0624
2023-05-15 2023-03-31 13F SOLARIS OILFIELD INFRASTRUCTURE, INC. CLA 83418M103 303,250 146 0.05 2,590 -13.96 0.0762
2023-02-14 2022-12-31 13F SOLARIS OILFIELD INFRASTRUCTURE, INC. CLA 83418M103 303,104 195,822 182.53 3,010 199.70 0.0850
2022-11-14 2022-09-30 13F SOLARIS OILFIELD INFRASTRUCTURE, INC. CLA 83418M103 107,282 -30 -0.03 1,004 -14.04 0.0296
2022-08-10 2022-06-30 13F SOLARIS OILFIELD INFRASTRUCTURE, INC. CLA 83418M103 107,312 13,777 14.73 1,168 10.61 0.0327
2022-05-16 2022-03-31 13F SOLARIS OILFIELD INFRASTRUCTURE, INC. CLA 83418M103 93,535 93,535 1,056 0.0250
2020-05-15 2020-03-31 13F SOLARIS OILFIELD INFRASTRUCTURE, INC CLA 83418M103 0 -53,463 -100.00 0 -100.00
2020-02-28 2019-12-31 13F/A-1 SOLARIS OILFIELD INFRASTRUCTURE, INC CLA 83418M103 53,463 -71,295 -57.15 748 -55.32 0.0183
2020-02-14 2019-12-31 13F SOLARIS OILFIELD INFRASTRUCTURE, INC CLA 83418M103 53,463 -71,295 748 18,275.4789
2019-11-14 2019-09-30 13F SOLARIS OILFIELD INFRASTRUCTURE, INC CLA 83418M103 124,758 -1,749 -1.38 1,674 -11.66 0.0415
2019-08-14 2019-06-30 13F SOLARIS OILFIELD INFRASTRUCTURE, INC CLA 83418M103 126,507 -4,176 -3.20 1,895 -11.78 0.0450
2019-05-13 2019-03-31 13F/A-1 SOLARIS OILFIELD INFRASTRUCTURE CL A CLA 83418M103 130,683 -67,799 -34.16 2,148 -10.50 0.0507
2019-05-13 2019-03-31 13F SOLARIS OILFIELD INFRASTRUCTURE CL A CLA 83418M103 130,683 -67,799 2,148
2019-02-12 2018-12-31 13F SOLARIS OILFIELD INFRASTRUCTURE CL A CLA 83418M103 198,482 -37,625 -15.94 2,400 -46.19 0.0596
2018-11-14 2018-09-30 13F SOLARIS OILFIELD INFRASTRUCTURE CL A CLA 83418M103 236,107 -28,930 -10.92 4,460 17.77 0.0830
2018-08-14 2018-06-30 13F SOLARIS OILFIELD INFRASTRUCTURE CL A CLA 83418M103 265,037 -18,243 -6.44 3,787 -19.27 0.0706
2018-05-14 2018-03-31 13F SOLARIS OILFIELD INFRASTRUCTURE INC CL A CLA 83418M103 283,280 96,043 51.29 4,691 17.01 0.0913
2018-02-13 2017-12-31 13F SOLARIS OILFIELD INFRASTRUCTURE INC CL A CLA 83418M103 187,237 187,237 4,009 0.0718
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.