When did LDOS join the S&P 500?

Leidos joined the S&P 500 index on 2019-08-09.

What sector is LDOS in?

LDOS is in the Industrials sector, Diversified Support Services industry.

LDOS — Leidos

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

Diversified Support Services · Industrials

Leidos Holdings, Inc. is a technology, engineering and science company providing services and solutions to domestic and international defense, intelligence, civil and medical markets. The company's customers include the U.S. Department of Defense (DoD), the U.S. Intelligence Community, the U.S. Department of Homeland Security (DHS), the U.S. Federal Aviation Administration (FAA), the U.S. Department of Veterans Affairs (VA), and numerous other U.S. civil, state and local government agencies. The company operates through four reportable segments: National Security & Digital, Health & Civilian, Commercial & International, and Defense Systems. It provides a broad range of scientific, engineering and technology services and solutions across these reportable segments.

Key Facts

Status	Active
Sector	Industrials
Industry	Diversified Support Services
Joined	2019-08-09
Tenure	6 yrs

S&P 500 Timeline

2019-08-09Joined S&P 500

Industry Peers

CPRT CTAS

Sector Peers

ADP ALLE AME AOS AXON BA BLDR BR CARR CAT

Institutional Holdings (13F)

901 institutions hold LDOS, totaling 120.6M shares ($17.3B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	16.5M	$2.6B
2	BlackRock, Inc.	9.5M	$1.5B
3	STATE STREET CORP	6.1M	$951M
4	VANGUARD PORTFOLIO MANAGEMENT LLC	5.5M	$851M
5	MORGAN STANLEY	4.6M	$797M
6	JPMORGAN CHASE & CO	4.3M	$656M
7	BARCLAYS PLC	4.6M	$640M
8	GEODE CAPITAL MANAGEMENT, LLC	3.6M	$562M
9	GOLDMAN SACHS GROUP INC	3.0M	$509M
10	Boston Partners	2.5M	$382M

View all holders →

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