Question 1

How many shares of CIEN does FIRST MANHATTAN CO. LLC. own?

Accepted Answer

As of 2026-Q1, FIRST MANHATTAN CO. LLC. holds 33,819 shares of CIEN (CIENA CORP).

Question 2

What is FIRST MANHATTAN CO. LLC.'s CIEN position worth?

Accepted Answer

As of 2026-Q1, FIRST MANHATTAN CO. LLC.'s CIEN position is worth $13.1M.

Question 3

Is FIRST MANHATTAN CO. LLC. buying or selling CIEN?

Accepted Answer

In 2026-Q1, FIRST MANHATTAN CO. LLC. decreased their CIEN position (-26.7% change in shares).

Question 4

When did FIRST MANHATTAN CO. LLC. first buy CIEN?

Accepted Answer

Based on available 13F filings, FIRST MANHATTAN CO. LLC. first reported a position in CIEN in 2026-Q1. They have held the position across 30 quarters.