CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

BANK OF MONTREAL /CAN/'s Holding History (CIK: 0000927971)

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

Q4 2025

Shares 35,891 Value ($000) $8,394 Avg Close $194.00 Range $143.19 - $248.00

Q3 2025

Shares 32,818 Value ($000) $4,781 Avg Close $101.84 Range $76.89 - $146.53

Q2 2025

Shares 35,185 Value ($000) $2,862 Avg Close $71.73 Range $49.21 - $86.21

Q1 2025

Shares 58,055 Value ($000) $3,508 Avg Close $79.05 Range $58.04 - $101.44

Q4 2024

Shares 62,297 Value ($000) $5,283 Avg Close $71.76 Range $59.60 - $91.82

Q3 2024

Shares 48,883 Value ($000) $3,021 Avg Close $52.69 Range $44.89 - $63.06

Q2 2024

Shares 33,937 Value ($000) $1,637 Avg Close $47.46 Range $43.30 - $53.58

Q1 2024

Shares 35,700 Value ($000) $1,788 Avg Close $52.75 Range $44.22 - $63.24

Q4 2023

Shares 120,552 Value ($000) $5,462 Avg Close $44.09 Range $39.94 - $48.36

Q3 2023

Shares 39,272 Value ($000) $1,927 Avg Close $44.08 Range $40.10 - $50.72

Q2 2023

Shares 64,245 Value ($000) $2,850 Avg Close $45.54 Range $40.84 - $52.67

Q1 2023

Shares 75,798 Value ($000) $3,982 Avg Close $49.92 Range $45.83 - $54.25

Q4 2022

Shares 68,545 Value ($000) $3,496 Avg Close $45.21 Range $38.33 - $52.51

Q3 2022

Shares 58,421 Value ($000) $2,391 Avg Close $48.05 Range $39.44 - $56.38

Q2 2022

Shares 44,173 Value ($000) $2,250 Avg Close $51.84 Range $41.63 - $61.78

Q1 2022

Shares 36,296 Value ($000) $2,227 Avg Close $65.45 Range $53.29 - $77.38

Q4 2021

Shares 36,076 Value ($000) $2,779 Avg Close $61.70 Range $51.01 - $78.28

Q3 2021

Shares 103,614 Value ($000) $5,342 Avg Close $55.54 Range $50.34 - $58.85

Q2 2021

Shares 114,057 Value ($000) $6,539 Avg Close $55.12 Range $49.51 - $61.09

Q1 2021

Shares 195,138 Value ($000) $11,050 Avg Close $53.81 Range $47.52 - $57.57

Q4 2020

Shares 399,068 Value ($000) $21,067 Avg Close $44.43 Range $38.03 - $54.05

Q3 2020

Shares 72,805 Value ($000) $2,995 Avg Close $52.62 Range $38.20 - $61.52

Q2 2020

Shares 91,893 Value ($000) $5,162 Avg Close $49.71 Range $38.00 - $57.19

Q1 2020

Shares 157,190 Value ($000) $6,386 Avg Close $41.03 Range $30.58 - $44.61

Q4 2019

Shares 168,019 Value ($000) $7,173 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 168,927 Value ($000) $6,626 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 130,103 Value ($000) $5,351 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 206,046 Value ($000) $7,692 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 308,784 Value ($000) $10,471 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 298,775 Value ($000) $9,335 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 215,384 Value ($000) $5,711 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 94,865 Value ($000) $2,458 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 137,665 Value ($000) $2,882 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 198,539 Value ($000) $4,361 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 138,742 Value ($000) $3,471 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 142,890 Value ($000) $3,374 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 155,698 Value ($000) $3,340 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 68,617 Value ($000) $1,495 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 50,984 Value ($000) $956 Avg Close $18.11 Range $15.62 - $21.87

Q1 2016

Shares 36,257 Value ($000) $690 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 197,669 Value ($000) $4,090 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 198,860 Value ($000) $4,121 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 146,372 Value ($000) $3,466 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 17,980 Value ($000) $347 Avg Close $19.93 Range $17.86 - $21.47

Q4 2014

Shares 13,153 Value ($000) $255 Avg Close $16.70 Range $13.77 - $20.14

Q3 2014

Shares 17,903 Value ($000) $299 Avg Close $19.60 Range $16.66 - $22.46

Q2 2014

Shares 19,304 Value ($000) $418 Avg Close $20.54 Range $18.00 - $24.21

Q1 2014

Shares 15,374 Value ($000) $349 Avg Close $23.52 Range $21.41 - $27.16

Q4 2013

Shares 1,216 Value ($000) $29 Avg Close $23.81 Range $20.93 - $27.94

Q3 2013

Shares 2,379 Value ($000) $60 Avg Close $22.53 Range $19.37 - $26.17

Q2 2013

Shares 56,886 Value ($000) $1,105 Avg Close $16.65 Range $14.14 - $20.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	35,891	$8,394	$194.00	$143.19 - $248.00
Q3 2025	32,818	$4,781	$101.84	$76.89 - $146.53
Q2 2025	35,185	$2,862	$71.73	$49.21 - $86.21
Q1 2025	58,055	$3,508	$79.05	$58.04 - $101.44
Q4 2024	62,297	$5,283	$71.76	$59.60 - $91.82
Q3 2024	48,883	$3,021	$52.69	$44.89 - $63.06
Q2 2024	33,937	$1,637	$47.46	$43.30 - $53.58
Q1 2024	35,700	$1,788	$52.75	$44.22 - $63.24
Q4 2023	120,552	$5,462	$44.09	$39.94 - $48.36
Q3 2023	39,272	$1,927	$44.08	$40.10 - $50.72
Q2 2023	64,245	$2,850	$45.54	$40.84 - $52.67
Q1 2023	75,798	$3,982	$49.92	$45.83 - $54.25
Q4 2022	68,545	$3,496	$45.21	$38.33 - $52.51
Q3 2022	58,421	$2,391	$48.05	$39.44 - $56.38
Q2 2022	44,173	$2,250	$51.84	$41.63 - $61.78
Q1 2022	36,296	$2,227	$65.45	$53.29 - $77.38
Q4 2021	36,076	$2,779	$61.70	$51.01 - $78.28
Q3 2021	103,614	$5,342	$55.54	$50.34 - $58.85
Q2 2021	114,057	$6,539	$55.12	$49.51 - $61.09
Q1 2021	195,138	$11,050	$53.81	$47.52 - $57.57
Q4 2020	399,068	$21,067	$44.43	$38.03 - $54.05
Q3 2020	72,805	$2,995	$52.62	$38.20 - $61.52
Q2 2020	91,893	$5,162	$49.71	$38.00 - $57.19
Q1 2020	157,190	$6,386	$41.03	$30.58 - $44.61
Q4 2019	168,019	$7,173	$38.10	$33.22 - $43.97
Q3 2019	168,927	$6,626	$41.92	$37.94 - $46.78
Q2 2019	130,103	$5,351	$38.48	$32.76 - $46.23
Q1 2019	206,046	$7,692	$38.83	$32.85 - $45.70
Q4 2018	308,784	$10,471	$31.69	$28.23 - $36.55
Q3 2018	298,775	$9,335	$28.02	$25.19 - $32.33
Q2 2018	215,384	$5,711	$25.40	$22.99 - $27.10
Q1 2018	94,865	$2,458	$23.53	$20.71 - $27.73
Q4 2017	137,665	$2,882	$21.20	$19.40 - $22.63
Q3 2017	198,539	$4,361	$23.93	$20.86 - $26.92
Q2 2017	138,742	$3,471	$23.96	$21.43 - $27.98
Q1 2017	142,890	$3,374	$24.52	$22.73 - $26.84
Q4 2016	155,698	$3,340	$21.85	$18.94 - $25.19
Q3 2016	68,617	$1,495	$20.85	$17.59 - $23.60
Q2 2016	50,984	$956	$18.11	$15.62 - $21.87
Q1 2016	36,257	$690	$18.47	$16.32 - $21.14
Q4 2015	197,669	$4,090	$22.97	$18.98 - $25.46
Q3 2015	198,860	$4,121	$23.24	$17.97 - $26.50
Q2 2015	146,372	$3,466	$22.84	$18.75 - $26.20
Q1 2015	17,980	$347	$19.93	$17.86 - $21.47
Q4 2014	13,153	$255	$16.70	$13.77 - $20.14
Q3 2014	17,903	$299	$19.60	$16.66 - $22.46
Q2 2014	19,304	$418	$20.54	$18.00 - $24.21
Q1 2014	15,374	$349	$23.52	$21.41 - $27.16
Q4 2013	1,216	$29	$23.81	$20.93 - $27.94
Q3 2013	2,379	$60	$22.53	$19.37 - $26.17
Q2 2013	56,886	$1,105	$16.65	$14.14 - $20.60