Question 1

How many shares of CIEN does LOOMIS SAYLES & CO L P own?

Accepted Answer

As of 2026-Q2, LOOMIS SAYLES & CO L P holds 38,920 shares of CIEN (CIENA CORP).

Question 2

What is LOOMIS SAYLES & CO L P's CIEN position worth?

Accepted Answer

As of 2026-Q2, LOOMIS SAYLES & CO L P's CIEN position is worth $19.1M.

Question 3

Is LOOMIS SAYLES & CO L P buying or selling CIEN?

Accepted Answer

In 2026-Q2, LOOMIS SAYLES & CO L P decreased their CIEN position (-57.4% change in shares).

Question 4

When did LOOMIS SAYLES & CO L P first buy CIEN?

Accepted Answer

Based on available 13F filings, LOOMIS SAYLES & CO L P first reported a position in CIEN in 2024-Q3. They have held the position across 30 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price
2026-Q2 Latest	Decreased	38,920	-57.4%	$19.1M	0.0%	$490.56
2026-Q1	Decreased	91,313	-37.5%	$35.5M	0.0%	$388.23
2025-Q4	Decreased	145,982	-53.1%	$34.1M	0.0%	$233.87
2025-Q3	Decreased	311,353	-12.9%	$45.4M	0.1%	$145.67
2025-Q2	Decreased	357,448	-15.1%	$29.1M	0.0%	$81.33
2025-Q1	Decreased	420,901	-2.2%	$25.4M	0.0%	$60.43
2024-Q4	Decreased	430,510	-3.0%	$36.5M	0.0%	$84.81
2024-Q3	Decreased	443,927	-2.3%	$27.3M	0.0%	$61.59