Position history for WILLIAM 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
Other major holders of CIEN: UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
Decreased |
| 398,579 |
-63.7% |
| $154.7M |
| 0.5% |
| $333.07 |
0 |
| 2025-Q4 | Decreased | 1.1M | -55.0% | $256.9M | 0.7% | $238.36 | 0 |
| 2025-Q3 | Decreased | 2.4M | -9.9% | $355.6M | 0.9% | $144.12 | 0 |
| 2025-Q2 | Increased | 2.7M | +35.0% | $220.3M | 0.6% | $82.12 | 56 |
| 2025-Q1 | New | 2M | - | $121.2M | 0.3% | $61.56 | 50 |