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Atom Investors’s Ciena CIEN Stock Holding History

Atom Investors’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
-15,137
Closed -$1.23M – 630
2025
Q2 		$1.23M Sell
15,137
-6,042
-29% -$433K 0.11% 216
2025
Q1 		$1.28M Buy
+21,179
New +$1.67M 0.16% 176
2024
Q4 		– Sell
-21,061
Closed -$1.3M – 514
2024
Q3 		$1.3M Buy
+21,061
New +$1.11M 0.14% 214
2024
Q2 		– Sell
-5,383
Closed -$266K – 506
2024
Q1 		$266K Sell
5,383
-60,609
-92% -$3.2M 0.03% 434
2023
Q4 		$2.97M Buy
65,992
+48,510
+277% +$2.14M 0.52% 46
2023
Q3 		$826K Buy
+17,482
New +$771K 0.19% 155
2019
Q2 		– Sell
-29,437
Closed -$1.1M – 439
2019
Q1 		$1.1M Buy
+29,437
New +$1.14M 0.09% 169

Other funds holding CIEN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $1.81T AUM 41.13% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BNP Paribas Asset Management
BNP Paribas Asset Management Paris, France $99.8B AUM 45.22% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Atom Investors's CIEN Position: Q3 2025 in Review

Atom Investors sold out of Ciena (CIEN) in Q3 2025, closing a stake of 15,137 shares — an estimated $1.23M sold.

Atom Investors first reported a position in CIEN in Q1 2019 and held it in 7 quarters. The position peaked at $2.97M in Q4 2023. 689 funds tracked by Wall St. Rank hold CIEN as of Q3 2025.

  • Atom Investors reported no remaining Ciena position as of Q3 2025 after selling out during the quarter.
  • Atom Investors sold 15,137 Ciena shares in Q3 2025, an estimated $1.23M.
  • Atom Investors first reported a position in Ciena in Q1 2019 and held it in 7 quarters.
  • Atom Investors's Ciena position peaked at $2.97M in Q4 2023.
  • 689 funds tracked by Wall St. Rank held Ciena as of Q3 2025.

Based on Atom Investors's 13F filing for Q3 2025, filed 14 Nov 2025.