Mariner
CIEN icon

Mariner’s Ciena CIEN Stock Holding History

Mariner’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 		$31.2M Buy
63,576
+142
+0.2% +$72.4K 0.03% 375
2026
Q1 		$24.6M Sell
63,434
-6,837
-10% -$2.09M 0.03% 413
2025
Q4 		$16.5M Buy
70,271
+15,937
+29% +$3.09M 0.02% 507
2025
Q3 		$7.91M Sell
54,334
-8,947
-14% -$911K 0.01% 724
2025
Q2 		$5.15M Buy
63,281
+10,263
+19% +$736K 0.01% 849
2025
Q1 		$3.2M Buy
53,018
+3,659
+7% +$289K 0.01% 990
2024
Q4 		$4.19M Buy
49,359
+8,655
+21% +$621K 0.01% 865
2024
Q3 		$2.51M Buy
40,704
+21,749
+115% +$1.15M ﹤0.01% 1079
2024
Q2 		$913K Buy
18,955
+4,541
+32% +$216K ﹤0.01% 1569
2024
Q1 		$713K Sell
14,414
-104
-0.7% -$5.49K ﹤0.01% 1752
2023
Q4 		$653K Buy
14,518
+173
+1% +$7.63K ﹤0.01% 1761
2023
Q3 		$678K Buy
14,345
+442
+3% +$19.5K ﹤0.01% 1572
2023
Q2 		$591K Sell
13,903
-2,095
-13% -$95.4K ﹤0.01% 1632
2023
Q1 		$840K Buy
15,998
+284
+2% +$14.2K ﹤0.01% 1368
2022
Q4 		$801K Buy
15,714
+2,392
+18% +$108K ﹤0.01% 1352
2022
Q3 		$539K Sell
13,322
-1,348
-9% -$64.8K ﹤0.01% 1374
2022
Q2 		$671K Sell
14,670
-341
-2% -$17.7K ﹤0.01% 1035
2022
Q1 		$910K Buy
15,011
+1,868
+14% +$122K ﹤0.01% 964
2021
Q4 		$1.01M Sell
13,143
-50
-0.4% -$3.08K ﹤0.01% 824
2021
Q3 		$677K Buy
+13,193
New +$733K ﹤0.01% 790

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 $3.37T AUM 44.26% 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

Mariner's CIEN Position: Q2 2026 in Review

Mariner increased its Ciena (CIEN) stake by 0.22% in Q2 2026, buying an estimated $72.4K and bringing the position to 63,576 shares worth $31.2M. The position accounts for 0.03% of the portfolio, ranked #375.

Mariner first reported a position in CIEN in Q3 2021 and has held it in 20 quarters since. 1,226 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Mariner held 63,576 shares of Ciena worth $31.2M as of Q2 2026.
  • Mariner bought 142 Ciena shares in Q2 2026, an estimated $72.4K.
  • Ciena made up 0.03% of Mariner's portfolio in Q2 2026, its #375 holding.
  • Mariner first reported a position in Ciena in Q3 2021 and has held it in 20 quarters since.
  • 1,226 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.