When did KLAC join the S&P 500?

KLA Corporation joined the S&P 500 index on 1997-09-30.

What sector is KLAC in?

KLAC is in the Information Technology sector, Semiconductor Materials & Equipment industry.

KLAC — KLA Corporation

Name: KLAC Institutional Holdings (13F) — 2026Q1
Creator: SEC EDGAR
License: https://www.sec.gov/data

Semiconductor Materials & Equipment · Information Technology

KLA Corporation provides process control and yield management solutions for the semiconductor and related nanoelectronics industries. The company operates through the following segments: Semiconductor Process Control, Specialty Semiconductor Processes, and PCB, Display and Component Inspection. The Semiconductor Process Control segment offers comprehensive inspection, metrology and data analysis products and related services. The Specialty Semiconductor Processes segment develops and sells advanced vacuum deposition and etching process tools. The PCB, Display and Component Inspection segment enables electronic device manufacturers to inspect, test and measure PCBs, flat panel displays and ICs to verify their quality. Its products include chip manufacturing, wire grid, packaging, surface analyzers, nanochemical testers, KT Pro equipment and compound semiconductors.

Industry Peers

AMAT LRCX Q TER

Sector Peers

AAPL ACN ADBE ADI ADSK AKAM AMAT AMD ANET APH

Key Facts

Status	Active
Sector	Information Technology
Industry	Semiconductor Materials & Equipment
Joined	1997-09-30
Tenure	28 yrs

S&P 500 Timeline

1997-09-30Joined S&P 500

Institutional Holdings (13F)

2,063 institutions hold KLAC, totaling 143.0M shares ($189.5B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	17.0M	$25.1B
2	BlackRock, Inc.	12.6M	$18.5B
3	STATE STREET CORP	6.2M	$9.1B
4	BARCLAYS PLC	9.4M	$6.9B
5	MORGAN STANLEY	5.2M	$6.6B
6	FMR LLC	4.4M	$6.5B
7	Capital World Investors	4.1M	$6.0B
8	VANGUARD PORTFOLIO MANAGEMENT LLC	4.0M	$5.9B
9	GEODE CAPITAL MANAGEMENT, LLC	3.7M	$5.4B
10	GOLDMAN SACHS GROUP INC	3.2M	$4.4B

View all holders →

Data source: Wikipedia · CC BY-SA 4.0 · SEC EDGAR 13F · Updated 2026-07-10