QC
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Quadrature Capital’s Ciena CIEN Stock Holding History

Quadrature Capital’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
2026
Q2 		$26.1M Buy
+53,302
New +$27.2M 0.22% 95
2026
Q1 		– Sell
-2,784
Closed -$651K – 1443
2025
Q4 		$651K Buy
+2,784
New +$540K 0.01% 625
2025
Q2 		– Sell
-4,159
Closed -$251K – 1103
2025
Q1 		$251K Buy
+4,159
New +$329K 0.01% 792
2023
Q4 		– Sell
-19,623
Closed -$927K – 1158
2023
Q3 		$927K Buy
19,623
+6,124
+45% +$270K 0.02% 437
2023
Q2 		$574K Buy
13,499
+8,216
+156% +$374K 0.01% 549
2023
Q1 		$277K Buy
5,283
+1,298
+33% +$64.8K 0.01% 694
2022
Q4 		$203K Buy
+3,985
New +$180K 0.01% 719
2021
Q3 		– Sell
-15,934
Closed -$906K – 738
2021
Q2 		$906K Buy
+15,934
New +$878K 0.03% 343
2020
Q3 		– Sell
-21,244
Closed -$1.15M – 754
2020
Q2 		$1.15M Buy
+21,244
New +$1.06M 0.13% 230
2020
Q1 		– Sell
-10,400
Closed -$444K – 527
2019
Q4 		$444K Sell
10,400
-4,163
-29% -$159K 0.02% 355
2019
Q3 		$571K Sell
14,563
-64,215
-82% -$2.69M 0.03% 368
2019
Q2 		$3.24M Buy
78,778
+17,367
+28% +$668K 0.21% 110
2019
Q1 		$2.29M Buy
+61,411
New +$2.38M 0.2% 124
2018
Q2 		– Sell
-245,625
Closed -$6.36M – 541
2018
Q1 		$6.36M Buy
+245,625
New +$5.78M 0.5% 51
2017
Q3 		– Sell
-61,818
Closed -$1.55M – 456
2017
Q2 		$1.55M Buy
+61,818
New +$1.48M 0.12% 186
2016
Q3 		– Sell
-49,942
Closed -$936K – 585
2016
Q2 		$936K Buy
+49,942
New +$904K 0.07% 256

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
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 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
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Quadrature Capital's CIEN Position: Q2 2026 in Review

Quadrature Capital opened a new position in Ciena (CIEN) in Q2 2026: 53,302 shares worth $26.1M. The stake represents 0.22% of the portfolio and ranks #95 among its holdings. This is a return to the name: Quadrature Capital previously reported a position in CIEN as recently as Q4 2025.

Quadrature Capital first reported a position in CIEN in Q2 2016 and has held it in 16 quarters since. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Quadrature Capital held 53,302 shares of Ciena worth $26.1M as of Q2 2026.
  • Ciena was a new Quadrature Capital position in Q2 2026.
  • Ciena made up 0.22% of Quadrature Capital's portfolio in Q2 2026, its #95 holding.
  • Quadrature Capital first reported a position in Ciena in Q2 2016 and has held it in 16 quarters since.
  • 1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Quadrature Capital's 13F filing for Q2 2026, filed 7 Aug 2026.