Solaris Energy Infrastructure, Inc.
MX ˙ BMV ˙ US83418M1036
SecurityMX:SEI / Solaris Energy Infrastructure, Inc.
InstitutionStifel Financial Corp
Latest Disclosed Ownership36,348 shares
Latest Disclosed Value $ 2,054,439
Stifel Financial Corp reports 14.96% increase in ownership of SEI / Solaris Energy Infrastructure, Inc.

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 36,348 shares of Solaris Energy Infrastructure, Inc. (MX:SEI) valued at $2,054,439 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 31,618 shares of Solaris Energy Infrastructure, Inc.. This represents a change in shares of 14.96% 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)
2026-05-12 2026-03-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 36,348 4,730 14.96 2,054 41.36 0.0004
2026-02-13 2025-12-31 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 31,618 4,965 18.63 1,454 36.43 0.0013
2025-11-12 2025-09-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 26,653 6,616 33.02 1,065 88.16 0.0010
2025-08-14 2025-06-30 13F SOLARIS ENERGY INFRAS COM CL A 83418M103 20,037 20,037 567 0.0006
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.