When did CIEN join the S&P 500?

Ciena joined the S&P 500 index on 2026-02-09.

What sector is CIEN in?

CIEN is in the Information Technology sector, Communications Equipment industry.

CIEN — Ciena

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

Communications Equipment · Information Technology

Ciena is a leader in high-speed optical connectivity, providing systems, components, and automation software to telecom carriers and enterprises such as data centers for long-distance connectivity. The company operates through four primary segments: Network Platforms, Platform Software and Services, Blue Planet Automation Software, and Global Services. While telecom carriers remain significant customers, cloud providers and hyperscalers now drive a substantial portion of the business. To meet the demands of AI data centers, customers are adopting Ciena's WaveLogic 6 platform, the first to support 1.6 terabits per second capacity.

Industry Peers

ANET CSCO FFIV LITE MSI

Sector Peers

AAPL ACN ADBE ADI ADSK AKAM AMAT AMD ANET APH

Key Facts

Status	Active
Sector	Information Technology
Industry	Communications Equipment
Joined	2026-02-09
Tenure	0 yrs

S&P 500 Timeline

2026-02-09Joined S&P 500

Institutional Holdings (13F)

1,080 institutions hold CIEN, totaling 151.6M shares ($53.7B) · As of 2026Q1

Rank	Institution	Shares	Value
1	FMR LLC	21.2M	$8.2B
2	VANGUARD CAPITAL MANAGEMENT LLC	18.3M	$7.1B
3	BlackRock, Inc.	13.4M	$5.2B
4	JPMORGAN CHASE & CO	10.2M	$3.7B
5	VANGUARD PORTFOLIO MANAGEMENT LLC	7.4M	$2.9B
6	STATE STREET CORP	6.3M	$2.4B
7	GEODE CAPITAL MANAGEMENT, LLC	4.1M	$1.6B
8	MORGAN STANLEY	4.7M	$1.2B
9	Capital Research Global Investors	2.8M	$1.1B
10	BANK OF AMERICA CORP /DE/	2.0M	$759M

View all holders →

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