When did WEC join the S&P 500?

WEC Energy Group joined the S&P 500 index on 2008-10-31.

What sector is WEC in?

WEC is in the Utilities sector, Electric Utilities industry.

WEC — WEC Energy Group

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

Electric Utilities · Utilities

Key Facts

Status	Active
Sector	Utilities
Industry	Electric Utilities
Joined	2008-10-31
Tenure	17 yrs

WEC Energy Group is a holding company engaged in the production and distribution of electricity and natural gas. It operates through the following segments: Wisconsin, Illinois, Other States, Electric Transmission, Non-Utility Energy Infrastructure and Corporate and Other. The Wisconsin segment refers to electric and natural gas utility operations. The Illinois segment operates natural gas utility and non-utility activities. The Other States segment involves natural gas operations of company subsidiaries. The Electric Transmission segment holds interests in state regulatory commissions. The Non-Utility Energy Infrastructure segment includes Wisconsin Power and Light Company, which owns and leases generation facilities. The Corporate and Other segment refers to the company's administrative and holding activities.

Industry Peers

AEP CEG DUK EIX ES ETR EVRG EXC FE LNT

Sector Peers

AEE AEP AES ATO AWK CEG CMS CNP D DTE

S&P 500 Timeline

2008-10-31Joined S&P 500

Institutional Holdings (13F)

1,386 institutions hold WEC, totaling 2.09B shares ($38.3B) · As of 2026Q1

Rank	Institution	Shares	Value
1	VANGUARD CAPITAL MANAGEMENT LLC	42.3M	$4.9B
2	BlackRock, Inc.	150.5M	$4.0B
3	STATE STREET CORP	57.5M	$2.5B
4	VANGUARD PORTFOLIO MANAGEMENT LLC	16.8M	$1.9B
5	MORGAN STANLEY	58.7M	$1.5B
6	GEODE CAPITAL MANAGEMENT, LLC	9.1M	$1.1B
7	WELLS FARGO & COMPANY/MN	22.9M	$1.0B
8	BANK OF AMERICA CORP /DE/	16.1M	$933M
9	BARCLAYS PLC	9.0M	$865M
10	DEUTSCHE BANK AG\	11.2M	$693M

View all holders →

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