CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

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

Q4 2019

Shares 200,190 Value ($000) $8,546 Avg Close $38.10 Range $33.22 - $43.97

Q3 2019

Shares 200,654 Value ($000) $7,872 Avg Close $41.92 Range $37.94 - $46.78

Q2 2019

Shares 200,654 Value ($000) $8,253 Avg Close $38.48 Range $32.76 - $46.23

Q1 2019

Shares 200,654 Value ($000) $7,492 Avg Close $38.83 Range $32.85 - $45.70

Q4 2018

Shares 200,614 Value ($000) $6,803 Avg Close $31.69 Range $28.23 - $36.55

Q3 2018

Shares 206,050 Value ($000) $6,437 Avg Close $28.02 Range $25.19 - $32.33

Q2 2018

Shares 241,050 Value ($000) $6,390 Avg Close $25.40 Range $22.99 - $27.10

Q1 2018

Shares 241,050 Value ($000) $6,243 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 399,800 Value ($000) $8,368 Avg Close $21.20 Range $19.40 - $22.63

Q3 2016

Shares 9,500 Value ($000) $207 Avg Close $20.85 Range $17.59 - $23.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	200,190	$8,546	$38.10	$33.22 - $43.97
Q3 2019	200,654	$7,872	$41.92	$37.94 - $46.78
Q2 2019	200,654	$8,253	$38.48	$32.76 - $46.23
Q1 2019	200,654	$7,492	$38.83	$32.85 - $45.70
Q4 2018	200,614	$6,803	$31.69	$28.23 - $36.55
Q3 2018	206,050	$6,437	$28.02	$25.19 - $32.33
Q2 2018	241,050	$6,390	$25.40	$22.99 - $27.10
Q1 2018	241,050	$6,243	$23.53	$20.71 - $27.73
Q4 2017	399,800	$8,368	$21.20	$19.40 - $22.63
Q3 2016	9,500	$207	$20.85	$17.59 - $23.60