HARBOR CAPITAL ADVISORS, INC.

Position in WTTR — Select Water Solutions, Inc.

CIK 1039128 CHICAGO, IL

Position in WTTR

as of Mar 31, 2026 · filed Apr 28, 2026 Compact

Position Value

$3,114,605

+$621,018 QoQ

Shares Held

203,569

-14.1% QoQ

Ownership

0.147%

of shares outstanding

% of Portfolio

0.29%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2024

9 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Energy · as of Mar 31, 2026

HARBOR CAPITAL ADVISORS, INC. holds $13,395,742 across 17 Oil & Gas Equipment & Services names. WTTR ranks #2 (23.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TDW	Tidewater Inc	40,689	$3,399,565
2	WTTR	Select Water Solutions, Inc. This page	203,569	$3,114,605
3	AROC	Archrock, Inc.	52,725	$1,834,830
4	NOV	NOV Inc.	73,297	$1,378,716
5	SLB	Slb Limited/Nv	24,221	$1,244,717
6	OII	Oceaneering International Inc	29,680	$1,052,749
7	KGS	Kodiak Gas Services, Inc.	14,516	$846,573
8	WFRD	Weatherford International plc	3,998	$378,130

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,114,605	203,569	-14.1%	Shares	Sole	2026-04-28
2025-12-31	$2,493,587	237,033	-21.7%	Shares	Sole	2026-01-20
2025-09-30	$3,235,969	302,710	-71.3%	Shares	Sole	2025-10-15
2025-06-30	$9,107,812	1,054,145	+3.8%	Shares	Sole	2025-07-09
2025-03-31	$10,662,256	1,015,453	+0.3%	Shares	Sole	2025-04-14
2024-12-31	$13,399,714	1,012,063	-9.7%	Shares	Sole	2025-01-10
2024-09-30	$12,478,354	1,121,146	+148.1%	Shares	Sole	2024-10-29
2024-06-30	$4,834,741	451,845	+273.4%	Shares	Sole	2024-07-09
2024-03-31	$1,116,894	121,007	—	Shares	Sole	2024-05-13
No filing history on record for this holder in this stock.