Banco Santander, S.A.

Position in SEI — Solaris Energy Infrastructure, Inc.

CIK 891478 Madrid, U3

Position in SEI

as of Jun 30, 2026 · filed Jul 29, 2026 Compact

Position Value

$9,779,107

+$1,219,595 QoQ

Shares Held

121,540

-19.8% QoQ

Ownership

0.159%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

#109

of 429 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Energy · as of Jun 30, 2026

Banco Santander, S.A. holds $41,904,556 across 5 Oil & Gas Equipment & Services names. SEI ranks #2 (23.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SLB	Slb Limited/Nv	500,961	$23,289,676
2	SEI	Solaris Energy Infrastructure, Inc. This page	121,540	$9,779,107
3	PUMP	ProPetro Holding Corp.	445,000	$6,381,300
4	BKR	Baker Hughes Co	27,130	$1,505,715
5	NOV	NOV Inc.	51,146	$948,758

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$9,779,107	121,540	-19.8%	Shares	Sole	2026-07-29
2026-03-31	$8,559,512	151,469	-13.2%	Shares	Sole	2026-05-08
2025-12-31	$8,021,765	174,500	—	Shares	Sole	2026-02-13
No filing history on record for this holder in this stock.