SEI Investments’s Ciena CIEN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $56.2M | Sell |
144,773
-104,622
| -42% | -$32M | 0.05% | 387 |
|
|
2025
Q4 | $58.3M | Sell |
249,395
-60,582
| -20% | -$11.8M | 0.06% | 346 |
|
|
2025
Q3 | $45.2M | Buy |
309,977
+99,171
| +47% | +$10.1M | 0.05% | 394 |
|
|
2025
Q2 | $17.1M | Sell |
210,806
-38,615
| -15% | -$2.77M | 0.02% | 763 |
|
|
2025
Q1 | $15.1M | Buy |
249,421
+92,407
| +59% | +$7.3M | 0.02% | 799 |
|
|
2024
Q4 | $13.3M | Sell |
157,014
-24,006
| -13% | -$1.72M | 0.02% | 862 |
|
|
2024
Q3 | $11.1M | Sell |
181,020
-17,760
| -9% | -$936K | 0.01% | 942 |
|
|
2024
Q2 | $9.58M | Buy |
198,780
+30,662
| +18% | +$1.46M | 0.01% | 938 |
|
|
2024
Q1 | $8.31M | Sell |
168,118
-1,737
| -1% | -$91.6K | 0.01% | 983 |
|
|
2023
Q4 | $7.65M | Sell |
169,855
-24,949
| -13% | -$1.1M | 0.01% | 1002 |
|
|
2023
Q3 | $9.21M | Sell |
194,804
-26,956
| -12% | -$1.19M | 0.02% | 897 |
|
|
2023
Q2 | $9.42M | Sell |
221,760
-22,382
| -9% | -$1.02M | 0.02% | 908 |
|
|
2023
Q1 | $12.8M | Buy |
244,142
+36,241
| +17% | +$1.81M | 0.02% | 715 |
|
|
2022
Q4 | $10.6M | Buy |
207,901
+13,924
| +7% | +$630K | 0.02% | 708 |
|
|
2022
Q3 | $7.84M | Buy |
193,977
+9,497
| +5% | +$456K | 0.02% | 877 |
|
|
2022
Q2 | $8.46M | Buy |
184,480
+12,514
| +7% | +$649K | 0.02% | 848 |
|
|
2022
Q1 | $10.4M | Buy |
171,966
+6,127
| +4% | +$401K | 0.02% | 764 |
|
|
2021
Q4 | $12.8M | Buy |
165,839
+6,408
| +4% | +$395K | 0.02% | 680 |
|
|
2021
Q3 | $8.18M | Sell |
159,431
-562
| -0.4% | -$31.2K | 0.02% | 845 |
|
|
2021
Q2 | $9.1M | Sell |
159,993
-6,081
| -4% | -$335K | 0.02% | 780 |
|
|
2021
Q1 | $8.99M | Buy |
166,074
+26,103
| +19% | +$1.4M | 0.02% | 720 |
|
|
2020
Q4 | $7.41M | Buy |
139,971
+13,830
| +11% | +$615K | 0.02% | 782 |
|
|
2020
Q3 | $5.01M | Sell |
126,141
-163,783
| -56% | -$8.62M | 0.01% | 868 |
|
|
2020
Q2 | $15.7M | Buy |
289,924
+52,347
| +22% | +$2.6M | 0.05% | 372 |
|
|
2020
Q1 | $9.46M | Buy |
237,577
+15,041
| +7% | +$617K | 0.03% | 491 |
|
|
2019
Q4 | $9.5M | Sell |
222,536
-47,233
| -18% | -$1.8M | 0.03% | 607 |
|
|
2019
Q3 | $10.6M | Sell |
269,769
-23,965
| -8% | -$1M | 0.03% | 577 |
|
|
2019
Q2 | $12.1M | Sell |
293,734
-62,174
| -17% | -$2.39M | 0.04% | 493 |
|
|
2019
Q1 | $13.3M | Sell |
355,908
-8,209
| -2% | -$319K | 0.04% | 445 |
|
|
2018
Q4 | $11.6M | Buy |
364,117
+13,322
| +4% | +$422K | 0.04% | 480 |
|
|
2018
Q3 | $11M | Buy |
350,795
+11,491
| +3% | +$322K | 0.04% | 486 |
|
|
2018
Q2 | $8.99M | Buy |
339,304
+40,054
| +13% | +$1.02M | 0.03% | 627 |
|
|
2018
Q1 | $7.75M | Buy |
299,250
+52,779
| +21% | +$1.24M | 0.03% | 619 |
|
|
2017
Q4 | $5.16M | Sell |
246,471
-160,900
| -39% | -$3.41M | 0.02% | 895 |
|
|
2017
Q3 | $8.95M | Buy |
407,371
+466
| +0.1% | +$11.2K | 0.03% | 634 |
|
|
2017
Q2 | $10.2M | Buy |
406,905
+84,207
| +26% | +$2.02M | 0.04% | 543 |
|
|
2017
Q1 | $7.62M | Buy |
322,698
+16,969
| +6% | +$416K | 0.03% | 619 |
|
|
2016
Q4 | $7.46M | Buy |
305,729
+29,432
| +11% | +$643K | 0.04% | 596 |
|
|
2016
Q3 | $6.02M | Buy |
276,297
+128,302
| +87% | +$2.68M | 0.03% | 636 |
|
|
2016
Q2 | $2.77M | Sell |
147,995
-30,162
| -17% | -$546K | 0.02% | 884 |
|
|
2016
Q1 | $3.39M | Buy |
178,157
+1,820
| +1% | +$33.6K | 0.02% | 758 |
|
|
2015
Q4 | $3.65M | Buy |
176,337
+130,595
| +286% | +$3M | 0.02% | 766 |
|
|
2015
Q3 | $949K | Buy |
45,742
+15,166
| +50% | +$352K | 0.01% | 1062 |
|
|
2015
Q2 | $724K | Buy |
30,576
+27,211
| +809% | +$621K | 0.01% | 1072 |
|
|
2015
Q1 | $63K | Buy |
3,365
+2,814
| +511% | +$56.1K | ﹤0.01% | 1644 |
|
|
2014
Q4 | $10K | Buy |
+551
| New | +$9.2K | ﹤0.01% | 1880 |
|
Other funds holding CIEN
VCM
VPM
SEI Investments's CIEN Position: Q1 2026 in Review
SEI Investments reduced its Ciena (CIEN) stake by 42% in Q1 2026, selling an estimated $32M and leaving 144,773 shares worth $56.2M. The position accounts for 0.05% of the portfolio, ranked #387.
SEI Investments first reported a position in CIEN in Q4 2014 and has held it in 46 quarters since. The position peaked at $58.3M in Q4 2025. 1,080 funds tracked by Wall St. Rank hold CIEN as of Q1 2026.
- SEI Investments held 144,773 shares of Ciena worth $56.2M as of Q1 2026.
- SEI Investments sold 104,622 Ciena shares in Q1 2026, an estimated $32M.
- Ciena made up 0.05% of SEI Investments's portfolio in Q1 2026, its #387 holding.
- SEI Investments first reported a position in Ciena in Q4 2014 and has held it in 46 quarters since.
- SEI Investments's Ciena position peaked at $58.3M in Q4 2025.
- 1,080 funds tracked by Wall St. Rank held Ciena as of Q1 2026.
Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.