William Blair Investment Management’s Ciena CIEN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Shares Change % | Capital Flow | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $220M | Buy |
2,708,540
+702,909
| +35% | +$57.2M | 0.58% | 36 |
|
|
2025
Q1 | $121M | Buy |
+2,005,631
| New | +$121M | 0.34% | 83 |
|
|
2019
Q2 | – | Sell |
-472,534
| Closed | -$17.6M | – | 379 |
|
|
2019
Q1 | $17.6M | Sell |
472,534
-48,380
| -9% | -$1.81M | 0.07% | 237 |
|
|
2018
Q4 | $17.7M | Buy |
520,914
+7,636
| +1% | +$259K | 0.09% | 208 |
|
|
2018
Q3 | $16M | Sell |
513,278
-40,768
| -7% | -$1.27M | 0.06% | 287 |
|
|
2018
Q2 | $14.7M | Buy |
+554,046
| New | +$14.7M | 0.05% | 289 |
|