Back to WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIENCIEN
5 quarters

Position history for WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCWILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's holdings in CIENA CORP

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds 398,579 shares of CIEN (CIENA CORP), worth $154.7M as of 2026-Q1. The position was decreased (-63.7% shares). CIEN represents 0.5% of WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's portfolio.

Current Value

$154.7M

Current Shares

398,579

Total Value Change

+$33.5M

Total Shares Change

-1.6M

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Decreased
398,579
-63.7%
$154.7M0.5%$333.07
0
2025-Q4
Decreased
1.1M
-55.0%
$256.9M0.7%$238.36
0
2025-Q3
Decreased
2.4M
-9.9%
$355.6M0.9%$144.12
0
2025-Q2
Increased
2.7M
+35.0%
$220.3M0.6%$82.12
56
2025-Q1
New
2M
-
$121.2M0.3%$61.56
50

Other major holders of CIEN: FMR LLC, BlackRock, Inc., JPMORGAN CHASE & CO

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