Question 1

How many shares of CIEN does WESTFIELD CAPITAL MANAGEMENT CO LP own?

Accepted Answer

As of 2026-Q2, WESTFIELD CAPITAL MANAGEMENT CO LP holds 20,950 shares of CIEN (CIENA CORP).

Question 2

What is WESTFIELD CAPITAL MANAGEMENT CO LP's CIEN position worth?

Accepted Answer

As of 2026-Q2, WESTFIELD CAPITAL MANAGEMENT CO LP's CIEN position is worth $10.3M.

Question 3

Is WESTFIELD CAPITAL MANAGEMENT CO LP buying or selling CIEN?

Accepted Answer

In 2026-Q2, WESTFIELD CAPITAL MANAGEMENT CO LP decreased their CIEN position (-34.0% change in shares).

Question 4

When did WESTFIELD CAPITAL MANAGEMENT CO LP first buy CIEN?

Accepted Answer

Based on available 13F filings, WESTFIELD CAPITAL MANAGEMENT CO LP first reported a position in CIEN in 2024-Q3. They have held the position across 15 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	20,950	-34.0%	$10.3M	0.0%	$490.56	0
2026-Q1	Unchanged	31,750	0.0%	$12.3M	0.1%	$388.23	0
2025-Q4	Unchanged	31,750	0.0%	$7.4M	0.0%	$233.87	0
2025-Q3	Unchanged	31,750	0.0%	$4.6M	0.0%	$145.67	0
2025-Q2	Unchanged	31,750	0.0%	$2.6M	0.0%	$81.33	0
2025-Q1	Unchanged	31,750	0.0%	$1.9M	0.0%	$60.43	0
2024-Q4	Decreased	31,750	-94.5%	$2.7M	0.0%	$84.81	0
2024-Q3	New	574,814	—	$35.4M	0.2%	$61.59	48