CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 249,395 Value ($000) $58,326 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 309,977 Value ($000) $45,155 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 210,806 Value ($000) $17,145 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 249,421 Value ($000) $15,072 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 157,014 Value ($000) $13,316 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 181,020 Value ($000) $11,149 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 198,780 Value ($000) $9,577 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 168,118 Value ($000) $8,313 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 169,855 Value ($000) $7,646 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 194,804 Value ($000) $9,206 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 221,760 Value ($000) $9,422 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 244,142 Value ($000) $12,823 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 207,901 Value ($000) $10,599 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 193,977 Value ($000) $7,843 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 184,480 Value ($000) $8,458 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 171,966 Value ($000) $10,415 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 165,839 Value ($000) $12,783 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 159,431 Value ($000) $8,180 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 159,993 Value ($000) $9,104 Avg Close $55.12 Range $49.51 - $61.09

Q1 2021

Shares 166,074 Value ($000) $8,989 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 139,971 Value ($000) $7,410 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 126,141 Value ($000) $5,009 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 289,924 Value ($000) $15,697 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 237,577 Value ($000) $9,458 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 222,536 Value ($000) $9,500 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 269,769 Value ($000) $10,587 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 293,734 Value ($000) $12,081 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 355,908 Value ($000) $13,290 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 364,117 Value ($000) $11,551 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 350,795 Value ($000) $10,958 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 339,304 Value ($000) $8,995 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 299,250 Value ($000) $7,751 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 246,471 Value ($000) $5,159 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 407,371 Value ($000) $8,950 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 406,905 Value ($000) $10,181 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 322,698 Value ($000) $7,619 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 305,729 Value ($000) $7,463 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 276,297 Value ($000) $6,023 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 147,995 Value ($000) $2,775 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 178,157 Value ($000) $3,388 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 176,337 Value ($000) $3,649 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 45,742 Value ($000) $949 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 30,576 Value ($000) $724 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 3,365 Value ($000) $63 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 551 Value ($000) $10 Avg Close $16.70 Range $13.77 - $20.14

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	249,395	$58,326	$194.00	$143.19 - $248.00
Q3 2025	309,977	$45,155	$101.84	$76.89 - $146.53
Q2 2025	210,806	$17,145	$71.73	$49.21 - $86.21
Q1 2025	249,421	$15,072	$79.05	$58.04 - $101.44
Q4 2024	157,014	$13,316	$71.76	$59.60 - $91.82
Q3 2024	181,020	$11,149	$52.69	$44.89 - $63.06
Q2 2024	198,780	$9,577	$47.46	$43.30 - $53.58
Q1 2024	168,118	$8,313	$52.75	$44.22 - $63.24
Q4 2023	169,855	$7,646	$44.09	$39.94 - $48.36
Q3 2023	194,804	$9,206	$44.08	$40.10 - $50.72
Q2 2023	221,760	$9,422	$45.54	$40.84 - $52.67
Q1 2023	244,142	$12,823	$49.92	$45.83 - $54.25
Q4 2022	207,901	$10,599	$45.21	$38.33 - $52.51
Q3 2022	193,977	$7,843	$48.05	$39.44 - $56.38
Q2 2022	184,480	$8,458	$51.84	$41.63 - $61.78
Q1 2022	171,966	$10,415	$65.45	$53.29 - $77.38
Q4 2021	165,839	$12,783	$61.70	$51.01 - $78.28
Q3 2021	159,431	$8,180	$55.54	$50.34 - $58.85
Q2 2021	159,993	$9,104	$55.12	$49.51 - $61.09
Q1 2021	166,074	$8,989	$53.81	$47.52 - $57.57
Q4 2020	139,971	$7,410	$44.43	$38.03 - $54.05
Q3 2020	126,141	$5,009	$52.62	$38.20 - $61.52
Q2 2020	289,924	$15,697	$49.71	$38.00 - $57.19
Q1 2020	237,577	$9,458	$41.03	$30.58 - $44.61
Q4 2019	222,536	$9,500	$38.10	$33.22 - $43.97
Q3 2019	269,769	$10,587	$41.92	$37.94 - $46.78
Q2 2019	293,734	$12,081	$38.48	$32.76 - $46.23
Q1 2019	355,908	$13,290	$38.83	$32.85 - $45.70
Q4 2018	364,117	$11,551	$31.69	$28.23 - $36.55
Q3 2018	350,795	$10,958	$28.02	$25.19 - $32.33
Q2 2018	339,304	$8,995	$25.40	$22.99 - $27.10
Q1 2018	299,250	$7,751	$23.53	$20.71 - $27.73
Q4 2017	246,471	$5,159	$21.20	$19.40 - $22.63
Q3 2017	407,371	$8,950	$23.93	$20.86 - $26.92
Q2 2017	406,905	$10,181	$23.96	$21.43 - $27.98
Q1 2017	322,698	$7,619	$24.52	$22.73 - $26.84
Q4 2016	305,729	$7,463	$21.85	$18.94 - $25.19
Q3 2016	276,297	$6,023	$20.85	$17.59 - $23.60
Q2 2016	147,995	$2,775	$18.11	$15.62 - $21.87
Q1 2016	178,157	$3,388	$18.47	$16.32 - $21.14
Q4 2015	176,337	$3,649	$22.97	$18.98 - $25.46
Q3 2015	45,742	$949	$23.24	$17.97 - $26.50
Q2 2015	30,576	$724	$22.84	$18.75 - $26.20
Q1 2015	3,365	$63	$19.93	$17.86 - $21.47
Q4 2014	551	$10	$16.70	$13.77 - $20.14