CIENA CORP

Ticker: CIEN CUSIP: 171779309 Class: EQTY

TCW GROUP INC's Holding History (CIK: 0000850401)

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

Q4 2025

Shares 2,224 Value ($000) $520 Avg Close $194.00 Range $143.19 - $248.00

Q1 2018

Shares 760,954 Value ($000) $19,709 Avg Close $23.53 Range $20.71 - $27.73

Q4 2017

Shares 639,066 Value ($000) $13,376 Avg Close $21.20 Range $19.40 - $22.63

Q3 2017

Shares 636,796 Value ($000) $13,991 Avg Close $23.93 Range $20.86 - $26.92

Q2 2017

Shares 627,129 Value ($000) $15,691 Avg Close $23.96 Range $21.43 - $27.98

Q1 2017

Shares 239,449 Value ($000) $5,653 Avg Close $24.52 Range $22.73 - $26.84

Q4 2016

Shares 153,500 Value ($000) $3,747 Avg Close $21.85 Range $18.94 - $25.19

Q3 2016

Shares 16,995 Value ($000) $370 Avg Close $20.85 Range $17.59 - $23.60

Q2 2016

Shares 16,022 Value ($000) $300 Avg Close $18.11 Range $15.62 - $21.87

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,224	$520	$194.00	$143.19 - $248.00
Q1 2018	760,954	$19,709	$23.53	$20.71 - $27.73
Q4 2017	639,066	$13,376	$21.20	$19.40 - $22.63
Q3 2017	636,796	$13,991	$23.93	$20.86 - $26.92
Q2 2017	627,129	$15,691	$23.96	$21.43 - $27.98
Q1 2017	239,449	$5,653	$24.52	$22.73 - $26.84
Q4 2016	153,500	$3,747	$21.85	$18.94 - $25.19
Q3 2016	16,995	$370	$20.85	$17.59 - $23.60
Q2 2016	16,022	$300	$18.11	$15.62 - $21.87