CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in PTEN — Patterson Uti Energy Inc

CIK 1081019 WEST SACRAMENTO, CA

Position in PTEN

as of Mar 31, 2026 · filed May 18, 2026 Compact

Position Value

$4,605,793

+$2,447,748 QoQ

Shares Held

425,281

+20.4% QoQ

Ownership

0.112%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Energy · as of Mar 31, 2026

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $36,958,337 across 9 Oil & Gas Drilling names. PTEN ranks #4 (12.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RIG	Transocean Ltd.	1,157,178	$7,672,090
2	NE	Noble Corp plc	148,895	$7,306,277
3	VAL	Valaris Ltd	74,181	$7,272,705
4	PTEN	Patterson Uti Energy Inc This page	425,281	$4,605,793
5	HP	Helmerich & Payne, Inc.	117,076	$4,218,248
6	SDRL	SEADRILL Ltd	72,909	$3,317,359
7	SOC	Sable Offshore Corp.	95,399	$1,575,991
8	NBR	Nabors Industries Ltd	10,463	$900,445

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,605,793	425,281	+20.4%	Shares	Sole	2026-05-18
2025-12-31	$2,158,045	353,199	+2.5%	Shares	Sole	2026-02-17
2025-09-30	$1,785,530	344,697	+0.0%	Shares	Sole	2025-11-14
2025-06-30	$2,043,958	344,681	0.0%	Shares	Sole	2025-08-14
2025-03-31	$2,833,277	344,681	-1.7%	Shares	Sole	2025-05-15
2024-12-31	$2,895,724	350,572	-3.0%	Shares	Sole	2025-03-18
2024-09-30	$2,765,796	361,542	+0.2%	Shares	Sole	2025-04-04
2024-06-30	$3,737,069	360,721	-3.4%	Shares	Sole	2025-04-08
2024-03-31	$4,456,927	373,277	-0.6%	Shares	Sole	2024-05-16
2023-12-31	$4,053,736	375,346	-3.7%	Shares	Sole	2024-02-13
2023-09-30	$5,395,385	389,840	+54.5%	Shares	Sole	2023-11-14
2023-06-30	$3,019,468	252,253	-6.7%	Shares	Sole	2023-08-21
2023-03-31	$3,162,533	270,302	-1.5%	Shares	Sole	2023-05-09
2022-12-31	$4,619,262	274,303	+1.3%	Shares	Sole	2023-02-14
2022-09-30	$3,163,492	270,847	-1.7%	Shares	Sole	2022-11-21
2022-06-30	$4,343,377	275,595	+4.9%	Shares	Sole	2022-08-15
2022-03-31	$4,067,029	262,728	-1.1%	Shares	Sole	2022-05-16
2021-12-31	$2,245,156	265,699	+2.1%	Shares	Sole	2022-02-15
2021-09-30	$2,342,367	260,263	-0.7%	Shares	Sole	2021-11-15
2021-06-30	$2,606,079	262,181	-7.0%	Shares	Sole	2021-08-16
2021-03-31	$2,010,296	281,949	+0.0%	Shares	Sole	2021-05-18
2020-12-31	$1,482,646	281,872	-8.5%	Shares	Sole	2021-02-16
2020-09-30	$877,529	307,905	+1.8%	Shares	Sole	2020-11-17
2020-06-30	$1,049,220	302,369	-9.9%	Shares	Sole	2020-08-17
2020-03-31	$788,688	335,612	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.