Position history for WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's holdings in CIENA CORP
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds 1.1M shares of CIEN (CIENA CORP), worth $256.9M as of 2025-Q4. The position was decreased (-55.0% shares). CIEN represents 0.7% of WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's portfolio.
Current Value
$256.9M
Current Shares
1.1M
Total Value Change
+$135.7M
Total Shares Change
-907,038
Other major holders of CIEN: UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
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 |