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Ardsley Advisory Partners’s Ciena CIEN Stock Holding History

Ardsley Advisory Partners’s Portfolio CIEN Stock Details CIEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-110,000
Closed -$8.95M – 152
2025
Q2 		$8.95M Buy
110,000
+10,500
+11% +$753K 1.46% 24
2025
Q1 		$6.01M Buy
99,500
+74,500
+298% +$5.89M 1.39% 26
2024
Q4 		$2.12M Buy
+25,000
New +$1.79M 0.41% 90
2024
Q2 		– Sell
-20,000
Closed -$989K – 148
2024
Q1 		$989K Sell
20,000
-16,000
-44% -$844K 0.14% 94
2023
Q4 		$1.62M Buy
+36,000
New +$1.59M 0.35% 79
2020
Q1 		– Hold
0
– – – 119
2019
Q4 		– Hold
0
– – – 158
2019
Q3 		– Hold
0
– – – 145
2017
Q1 		– Sell
-250,000
Closed -$6.1M – 165
2016
Q4 		$6.1M Buy
+250,000
New +$5.46M 1.27% 35
2016
Q2 		– Sell
-27,500
Closed -$523K – 162
2016
Q1 		$523K Buy
+27,500
New +$508K 0.11% 76
2014
Q4 		– Sell
-437,900
Closed -$7.32M – 198
2014
Q3 		$7.32M Buy
437,900
+403,900
+1,188% +$7.92M 1.21% 31
2014
Q2 		$736K Sell
34,000
-216,000
-86% -$4.44M 0.1% 110
2014
Q1 		$5.68M Buy
+250,000
New +$5.88M 0.92% 37
2013
Q3 		– Sell
-15,000
Closed -$291K – 151
2013
Q2 		$291K Buy
+15,000
New +$250K 0.07% 101

Other funds holding CIEN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.47T AUM 27.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BNP Paribas Asset Management
BNP Paribas Asset Management Paris, France $86.1B AUM 29.11% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return