When did MU join the S&P 500?

Micron Technology joined the S&P 500 index on 1994-09-27.

What sector is MU in?

MU is in the Information Technology sector, Semiconductors industry.

MU — Micron Technology

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

Semiconductors · Information Technology

Micron Technology, Inc. is dedicated to providing innovative memory and storage solutions. It operates through the following segments: Compute and Networking Business Unit (CNBU), Mobile Business Unit (MBU), Embedded Business Unit (EBU), and Storage Business Unit (SBU). The CNBU segment includes memory products and solutions sold to client, cloud server, enterprise, graphics, and networking markets. The MBU segment involves memory and storage products sold

Key Facts

Status	Active
Sector	Information Technology
Industry	Semiconductors
Joined	1994-09-27
Tenure	31 yrs

S&P 500 Timeline

1994-09-27Joined S&P 500

Industry Peers

ADI AMD AVGO FSLR INTC MCHP MPWR MRVL NVDA NXPI

Sector Peers

AAPL ACN ADBE ADI ADSK AKAM AMAT AMD ANET APH

Institutional Holdings (13F)

2,991 institutions hold MU, totaling 1.16B shares ($328.3B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	146.3M	$49.4B
2	BlackRock, Inc.	103.1M	$34.8B
3	STATE STREET CORP	52.2M	$17.7B
4	Capital World Investors	42.1M	$14.2B
5	MORGAN STANLEY	48.8M	$13.0B
6	FMR LLC	32.1M	$10.8B
7	GEODE CAPITAL MANAGEMENT, LLC	27.4M	$9.2B
8	BARCLAYS PLC	71.2M	$8.9B
9	VANGUARD PORTFOLIO MANAGEMENT LLC	23.0M	$7.8B
10	PRIMECAP MANAGEMENT CO/CA/	21.9M	$7.4B

View all holders →

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