Holocene Advisors
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Holocene Advisors’s Ciena CIEN Stock Holding History

Holocene Advisors’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 		– Sell
-25,550
Closed -$9.92M – 847
2026
Q1 		$9.92M Sell
25,550
-404,607
-94% -$124M 0.02% 320
2025
Q4 		$101M Buy
430,157
+176,742
+70% +$34.3M 0.21% 129
2025
Q3 		$36.9M Buy
+253,415
New +$25.8M 0.08% 207
2024
Q4 		– Sell
-12,612
Closed -$777K – 772
2024
Q3 		$777K Sell
12,612
-2,048
-14% -$108K ﹤0.01% 632
2024
Q2 		$706K Buy
+14,660
New +$696K ﹤0.01% 625
2023
Q3 		– Sell
-132,503
Closed -$5.63M – 740
2023
Q2 		$5.63M Sell
132,503
-755,160
-85% -$34.4M 0.02% 341
2023
Q1 		$46.6M Buy
887,663
+123,041
+16% +$6.14M 0.23% 135
2022
Q4 		$39M Sell
764,622
-902,111
-54% -$40.8M 0.24% 124
2022
Q3 		$67.4M Buy
1,666,733
+406,314
+32% +$19.5M 0.43% 81
2022
Q2 		$57.6M Sell
1,260,419
-598,943
-32% -$31M 0.35% 98
2022
Q1 		$113M Buy
+1,859,362
New +$122M 0.59% 56
2021
Q3 		– Sell
-1,027,603
Closed -$58.5M – 827
2021
Q2 		$58.5M Sell
1,027,603
-695,408
-40% -$38.3M 0.33% 107
2021
Q1 		$94.3M Buy
1,723,011
+951,830
+123% +$51.2M 0.59% 48
2020
Q4 		$40.8M Buy
+771,181
New +$34.3M 0.26% 129
2020
Q2 		– Sell
-860,744
Closed -$34.3M – 631
2020
Q1 		$34.3M Buy
860,744
+855,715
+17,016% +$35.1M 0.37% 83
2019
Q4 		$215K Buy
+5,029
New +$192K ﹤0.01% 659
2019
Q3 		– Sell
-1,297,395
Closed -$53.4M – 725
2019
Q2 		$53.4M Buy
+1,297,395
New +$49.9M 0.68% 54
2018
Q4 		– Sell
-39,510
Closed -$1.23M – 664
2018
Q3 		$1.23M Buy
39,510
+27,416
+227% +$768K 0.02% 176
2018
Q2 		$321K Buy
+12,094
New +$307K 0.01% 467
2018
Q1 		– Sell
-1,602,040
Closed -$33.5M – 566
2017
Q4 		$33.5M Buy
+1,602,040
New +$34M 0.85% 38

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

Holocene Advisors's CIEN Position: Q2 2026 in Review

Holocene Advisors sold out of Ciena (CIEN) in Q2 2026, closing a stake of 25,550 shares — an estimated $9.92M sold.

Holocene Advisors first reported a position in CIEN in Q4 2017 and held it in 20 quarters. The position peaked at $113M in Q1 2022. 1,224 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.

  • Holocene Advisors reported no remaining Ciena position as of Q2 2026 after selling out during the quarter.
  • Holocene Advisors sold 25,550 Ciena shares in Q2 2026, an estimated $9.92M.
  • Holocene Advisors first reported a position in Ciena in Q4 2017 and held it in 20 quarters.
  • Holocene Advisors's Ciena position peaked at $113M in Q1 2022.
  • 1,224 funds tracked by Wall St. Rank held Ciena as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.