Arrowstreet Capital’s Ciena CIEN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $823M | Buy |
1,677,029
+288,552
| +21% | +$147M | 0.37% | 50 |
|
|
2026
Q1 | $539M | Sell |
1,388,477
-848,358
| -38% | -$259M | 0.29% | 70 |
|
|
2025
Q4 | $523M | Buy |
2,236,835
+1,092,980
| +96% | +$212M | 0.31% | 71 |
|
|
2025
Q3 | $167M | Buy |
1,143,855
+1,093,557
| +2,174% | +$111M | 0.11% | 184 |
|
|
2025
Q2 | $4.09M | Sell |
50,298
-151,069
| -75% | -$10.8M | ﹤0.01% | 1240 |
|
|
2025
Q1 | $12.2M | Sell |
201,367
-328,188
| -62% | -$25.9M | 0.01% | 749 |
|
|
2024
Q4 | $44.9M | Buy |
529,555
+518,003
| +4,484% | +$37.2M | 0.04% | 403 |
|
|
2024
Q3 | $711K | Sell |
11,552
-99,862
| -90% | -$5.26M | ﹤0.01% | 1464 |
|
|
2024
Q2 | $5.37M | Buy |
111,414
+91,620
| +463% | +$4.35M | ﹤0.01% | 813 |
|
|
2024
Q1 | $979K | Buy |
19,794
+3,899
| +25% | +$206K | ﹤0.01% | 1320 |
|
|
2023
Q4 | $715K | Buy |
+15,895
| New | +$701K | ﹤0.01% | 1162 |
|
|
2023
Q1 | – | Sell |
-10,599
| Closed | -$540K | – | 1369 |
|
|
2022
Q4 | $540K | Buy |
+10,599
| New | +$479K | ﹤0.01% | 1121 |
|
|
2022
Q1 | – | Sell |
-8,650
| Closed | -$666K | – | 1230 |
|
|
2021
Q4 | $666K | Buy |
+8,650
| New | +$534K | ﹤0.01% | 1235 |
|
|
2021
Q2 | – | Sell |
-30,149
| Closed | -$1.65M | – | 1922 |
|
|
2021
Q1 | $1.65M | Sell |
30,149
-1,088,005
| -97% | -$58.6M | ﹤0.01% | 1629 |
|
|
2020
Q4 | $59.1M | Buy |
1,118,154
+562,812
| +101% | +$25M | 0.08% | 233 |
|
|
2020
Q3 | $22M | Buy |
555,342
+74,623
| +16% | +$3.93M | 0.03% | 513 |
|
|
2020
Q2 | $26M | Buy |
480,719
+449,619
| +1,446% | +$22.4M | 0.05% | 397 |
|
|
2020
Q1 | $1.24M | Sell |
31,100
-2,062,773
| -99% | -$84.6M | ﹤0.01% | 1237 |
|
|
2019
Q4 | $89.4M | Buy |
2,093,873
+630,727
| +43% | +$24M | 0.21% | 94 |
|
|
2019
Q3 | $57.4M | Sell |
1,463,146
-234,536
| -14% | -$9.83M | 0.13% | 163 |
|
|
2019
Q2 | $69.8M | Sell |
1,697,682
-77,576
| -4% | -$2.99M | 0.16% | 136 |
|
|
2019
Q1 | $66.3M | Buy |
1,775,258
+829,489
| +88% | +$32.2M | 0.16% | 151 |
|
|
2018
Q4 | $32.1M | Buy |
+945,769
| New | +$30M | 0.08% | 239 |
|
|
2016
Q1 | – | Sell |
-289,172
| Closed | -$5.98M | – | 1360 |
|
|
2015
Q4 | $5.98M | Buy |
289,172
+47,172
| +19% | +$1.08M | 0.03% | 494 |
|
|
2015
Q3 | $5.01M | Buy |
242,000
+120,074
| +98% | +$2.79M | 0.02% | 526 |
|
|
2015
Q2 | $2.89M | Sell |
121,926
-111,874
| -48% | -$2.56M | 0.02% | 552 |
|
|
2015
Q1 | $4.51M | Buy |
+233,800
| New | +$4.66M | 0.03% | 433 |
|
|
2014
Q2 | – | Sell |
-899,258
| Closed | -$20.4M | – | 1004 |
|
|
2014
Q1 | $20.4M | Buy |
899,258
+289,035
| +47% | +$6.8M | 0.12% | 172 |
|
|
2013
Q4 | $14.6M | Buy |
610,223
+322,950
| +112% | +$7.69M | 0.08% | 232 |
|
|
2013
Q3 | $7.18M | Buy |
287,273
+252,110
| +717% | +$5.68M | 0.05% | 313 |
|
|
2013
Q2 | $683K | Buy |
+35,163
| New | +$585K | 0.01% | 593 |
|
Other funds holding CIEN
Arrowstreet Capital's CIEN Position: Q2 2026 in Review
Arrowstreet Capital increased its Ciena (CIEN) stake by 21% in Q2 2026, buying an estimated $147M and bringing the position to 1,677,029 shares worth $823M. The position accounts for 0.37% of the portfolio, ranked #50.
Arrowstreet Capital first reported a position in CIEN in Q2 2013 and has held it in 31 quarters since. 1,224 funds tracked by Wall St. Rank hold CIEN as of Q2 2026.
- Arrowstreet Capital held 1,677,029 shares of Ciena worth $823M as of Q2 2026.
- Arrowstreet Capital bought 288,552 Ciena shares in Q2 2026, an estimated $147M.
- Ciena made up 0.37% of Arrowstreet Capital's portfolio in Q2 2026, its #50 holding.
- Arrowstreet Capital first reported a position in Ciena in Q2 2013 and has held it in 31 quarters since.
- 1,224 funds tracked by Wall St. Rank held Ciena as of Q2 2026.
Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.