Question 1

How many shares of CIEN does CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM own?

Accepted Answer

As of 2026-Q1, CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM holds 237,900 shares of CIEN (CIENA CORP).

Question 2

What is CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's CIEN position worth?

Accepted Answer

As of 2026-Q1, CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's CIEN position is worth $92.4M.

Question 3

Is CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM buying or selling CIEN?

Accepted Answer

In 2026-Q1, CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM decreased their CIEN position (-1.3% change in shares).

Question 4

When did CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM first buy CIEN?

Accepted Answer

Based on available 13F filings, CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM first reported a position in CIEN in 2024-Q2. They have held the position across 30 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	237,900	-1.3%	$92.4M	0.1%	$333.07	0
2025-Q4	Decreased	240,967	-4.8%	$56.4M	0.0%	$238.36	0
2025-Q3	Increased	253,068	+0.6%	$36.9M	0.0%	$144.12	29
2025-Q2	Increased	251,460	+7.4%	$20.5M	0.0%	$82.12	31
2025-Q1	Increased	234,166	+5.6%	$14.2M	0.0%	$61.56	30
2024-Q4	Decreased	221,681	-6.7%	$18.8M	0.0%	$85.01	0
2024-Q3	Decreased	237,488	-2.2%	$14.6M	0.0%	$61.81	0
2024-Q2	Decreased	242,899	-3.2%	$11.7M	0.0%	$48.18	0