CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO's Holding History (CIK: 0000315297)

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

Q4 2025

Shares 14,002 Value ($000) $3 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 14,002 Value ($000) $2 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 15,288 Value ($000) $1 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 15,288 Value ($000) $1 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 15,288 Value ($000) $1 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 15,288 Value ($000) $1 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 15,288 Value ($000) $1 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 16,624 Value ($000) $1 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 18,099 Value ($000) $1 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 18,803 Value ($000) $1 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 20,488 Value ($000) $1 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 20,488 Value ($000) $1 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 20,488 Value ($000) $1 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 20,488 Value ($000) $828 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 20,488 Value ($000) $936 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 20,488 Value ($000) $1,242 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 22,150 Value ($000) $1,705 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 22,150 Value ($000) $1,137 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 22,150 Value ($000) $1,260 Avg Close $55.12 Range $49.51 - $61.09

Q1 2021

Shares 22,150 Value ($000) $1,212 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 22,150 Value ($000) $1,171 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 22,552 Value ($000) $895 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 22,552 Value ($000) $1,221 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 22,552 Value ($000) $898 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 21,703 Value ($000) $927 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 21,703 Value ($000) $851 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 21,703 Value ($000) $893 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 21,703 Value ($000) $810 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 21,703 Value ($000) $736 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 21,703 Value ($000) $678 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 21,703 Value ($000) $575 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 21,703 Value ($000) $562 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 26,794 Value ($000) $561 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 26,794 Value ($000) $589 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 27,081 Value ($000) $678 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 27,081 Value ($000) $639 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 27,081 Value ($000) $661 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 27,081 Value ($000) $590 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 27,081 Value ($000) $508 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 27,081 Value ($000) $515 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 27,081 Value ($000) $560 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 27,081 Value ($000) $561 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 27,081 Value ($000) $641 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 27,081 Value ($000) $523 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 27,081 Value ($000) $526 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 27,081 Value ($000) $453 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 31,681 Value ($000) $686 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 31,681 Value ($000) $720 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 31,681 Value ($000) $758 Avg Close $23.81 Range $20.93 - $27.94

Q3 2013

Shares 31,681 Value ($000) $791 Avg Close $22.53 Range $19.37 - $26.17

Q2 2013

Shares 31,681 Value ($000) $615 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,002	$3	$194.00	$143.19 - $248.00
Q3 2025	14,002	$2	$101.84	$76.89 - $146.53
Q2 2025	15,288	$1	$71.73	$49.21 - $86.21
Q1 2025	15,288	$1	$79.05	$58.04 - $101.44
Q4 2024	15,288	$1	$71.76	$59.60 - $91.82
Q3 2024	15,288	$1	$52.69	$44.89 - $63.06
Q2 2024	15,288	$1	$47.46	$43.30 - $53.58
Q1 2024	16,624	$1	$52.75	$44.22 - $63.24
Q4 2023	18,099	$1	$44.09	$39.94 - $48.36
Q3 2023	18,803	$1	$44.08	$40.10 - $50.72
Q2 2023	20,488	$1	$45.54	$40.84 - $52.67
Q1 2023	20,488	$1	$49.92	$45.83 - $54.25
Q4 2022	20,488	$1	$45.21	$38.33 - $52.51
Q3 2022	20,488	$828	$48.05	$39.44 - $56.38
Q2 2022	20,488	$936	$51.84	$41.63 - $61.78
Q1 2022	20,488	$1,242	$65.45	$53.29 - $77.38
Q4 2021	22,150	$1,705	$61.70	$51.01 - $78.28
Q3 2021	22,150	$1,137	$55.54	$50.34 - $58.85
Q2 2021	22,150	$1,260	$55.12	$49.51 - $61.09
Q1 2021	22,150	$1,212	$53.81	$47.52 - $57.57
Q4 2020	22,150	$1,171	$44.43	$38.03 - $54.05
Q3 2020	22,552	$895	$52.62	$38.20 - $61.52
Q2 2020	22,552	$1,221	$49.71	$38.00 - $57.19
Q1 2020	22,552	$898	$41.03	$30.58 - $44.61
Q4 2019	21,703	$927	$38.10	$33.22 - $43.97
Q3 2019	21,703	$851	$41.92	$37.94 - $46.78
Q2 2019	21,703	$893	$38.48	$32.76 - $46.23
Q1 2019	21,703	$810	$38.83	$32.85 - $45.70
Q4 2018	21,703	$736	$31.69	$28.23 - $36.55
Q3 2018	21,703	$678	$28.02	$25.19 - $32.33
Q2 2018	21,703	$575	$25.40	$22.99 - $27.10
Q1 2018	21,703	$562	$23.53	$20.71 - $27.73
Q4 2017	26,794	$561	$21.20	$19.40 - $22.63
Q3 2017	26,794	$589	$23.93	$20.86 - $26.92
Q2 2017	27,081	$678	$23.96	$21.43 - $27.98
Q1 2017	27,081	$639	$24.52	$22.73 - $26.84
Q4 2016	27,081	$661	$21.85	$18.94 - $25.19
Q3 2016	27,081	$590	$20.85	$17.59 - $23.60
Q2 2016	27,081	$508	$18.11	$15.62 - $21.87
Q1 2016	27,081	$515	$18.47	$16.32 - $21.14
Q4 2015	27,081	$560	$22.97	$18.98 - $25.46
Q3 2015	27,081	$561	$23.24	$17.97 - $26.50
Q2 2015	27,081	$641	$22.84	$18.75 - $26.20
Q1 2015	27,081	$523	$19.93	$17.86 - $21.47
Q4 2014	27,081	$526	$16.70	$13.77 - $20.14
Q3 2014	27,081	$453	$19.60	$16.66 - $22.46
Q2 2014	31,681	$686	$20.54	$18.00 - $24.21
Q1 2014	31,681	$720	$23.52	$21.41 - $27.16
Q4 2013	31,681	$758	$23.81	$20.93 - $27.94
Q3 2013	31,681	$791	$22.53	$19.37 - $26.17
Q2 2013	31,681	$615	$16.65	$14.14 - $20.60