Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI)

Q: What does CUSIP 83418M103 represent in this 13F holders report?

CUSIP 83418M103 is the security identifier for SEI - Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value used to aggregate holder disclosures.

Q: How many institutions held SEI - Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value in Q3 2018?

107 institutional investors reported SEI - Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value for Q3 2018. Use the holders table for investor-level position and value details.

CUSIP: 83418M103

Q3 2018 13F Holders as of 30 Sep 2018

Security type / class: Equity / Class A Common Stock, $0.01 par value
Total 13F shares: 36,963,944
Total 13F value: $698,231,737
Share change: +483,768
Put/Call ratio: 45%
SEC-reported price per share: $18.89
Number of holders: 107
Value change: +$17,092,508
Number of buys: 49
Number of sells: 59
Shares outstanding: 58,139,535

Security key

83418M103

Report period

Q3 2018

Institutions

107

Top holders

SEI full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2018 Previous quarter: Q2 2018 Solaris Energy Infrastructure, Inc. SEC filings Solaris Energy Infrastructure, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 83418M103

Newer quarter: Q4 2018 Previous quarter: Q2 2018

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of SEI - Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Yorktown Energy Partners ...

Disclosed value leader

Yorktown Energy Partners ...

Comparable rows

15/15

Latest evidence

30 Jun 2018

13F Lead comparable stake: 19% Showing 1-6 of 15 holder rows.

Quick read

Yorktown Energy Partners X, L.P. leads the comparable SEC ownership view at 19%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Yorktown Energy Partners X, L.P.'s linked filing trail.

Comparable ownership Top 5

Yorktown Energy Partners X, L.P. 19%

TimesSquare Capital Management, LLC 3.9%

FRED ALGER MANAGEMENT, LLC 3.8%

BlackRock Finance, Inc. 2.9%

GILDER GAGNON HOWE & CO LLC 2.3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Yorktown Energy Partners X, L.P.	13F Company 13F	19%	$156,536,000 10,954,234 shares	—	30 Jun 2018
TimesSquare Capital Management, LLC	13F Company 13F	3.9%	$32,773,000 2,293,440 shares	—	30 Jun 2018
FRED ALGER MANAGEMENT, LLC	13F Company 13F	3.8%	$31,684,000 2,217,243 shares	—	30 Jun 2018
BlackRock Finance, Inc.	13F Company 13F	2.9%	$23,961,000 1,676,793 shares	—	30 Jun 2018
GILDER GAGNON HOWE & CO LLC	13F Company 13F	2.3%	$19,485,000 1,363,562 shares	—	30 Jun 2018
WELLS FARGO & COMPANY/MN	13F Company 13F	2.2%	$18,597,000 1,301,357 shares	—	30 Jun 2018

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2018

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

107

36,963,944

Rows available

107

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2018 vs Q2 2018 Across Filers

Q2 2018 holders

117

Q3 2018 holders

107

Holder diff

-10

Investor	Q2 2018 Shares	Q3 2018 Shares	Share Diff	Share Chg %	Q2 2018 value	Q3 2018 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend