CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q1 2016

Shares 79,504 Value ($000) $1,512 Avg Close $18.47 Range $16.32 - $21.14

Q4 2015

Shares 197,443 Value ($000) $4,085 Avg Close $22.97 Range $18.98 - $25.46

Q3 2015

Shares 177,405 Value ($000) $3,676 Avg Close $23.24 Range $17.97 - $26.50

Q2 2015

Shares 155,589 Value ($000) $3,684 Avg Close $22.84 Range $18.75 - $26.20

Q1 2015

Shares 97,596 Value ($000) $1,885 Avg Close $19.93 Range $17.86 - $21.47

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	79,504	$1,512	$18.47	$16.32 - $21.14
Q4 2015	197,443	$4,085	$22.97	$18.98 - $25.46
Q3 2015	177,405	$3,676	$23.24	$17.97 - $26.50
Q2 2015	155,589	$3,684	$22.84	$18.75 - $26.20
Q1 2015	97,596	$1,885	$19.93	$17.86 - $21.47