When did COST join the S&P 500?

Costco joined the S&P 500 index on 1993-10-01.

What sector is COST in?

COST is in the Consumer Staples sector, Consumer Staples Merchandise Retail industry.

COST — Costco

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

Consumer Staples Merchandise Retail · Consumer Staples

Key Facts

Status	Active
Sector	Consumer Staples
Industry	Consumer Staples Merchandise Retail
Joined	1993-10-01
Tenure	32 yrs

Costco Wholesale operates membership warehouses through wholly-owned subsidiaries. The company conducts business through the following geographic segments: United States, Canada, and Other International.

Industry Peers

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Sector Peers

ADM BF.B BG CASY CHD CL CLX DG DLTR EL

S&P 500 Timeline

1993-10-01Joined S&P 500

Institutional Holdings (13F)

4,223 institutions hold COST, totaling 396.4M shares ($366.7B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	57.7M	$57.5B
2	BlackRock, Inc.	34.9M	$34.8B
3	MORGAN STANLEY	28.8M	$26.8B
4	STATE STREET CORP	18.2M	$18.1B
5	BARCLAYS PLC	16.3M	$12.7B
6	VANGUARD PORTFOLIO MANAGEMENT LLC	10.7M	$10.7B
7	GEODE CAPITAL MANAGEMENT, LLC	10.7M	$10.6B
8	BANK OF AMERICA CORP /DE/	7.5M	$7.5B
9	FMR LLC	6.7M	$6.7B
10	GOLDMAN SACHS GROUP INC	5.8M	$5.4B

View all holders →

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