What is the current PE ratio of CIEN?

As of today, CIEN PE ratio is 78.00

What is CIEN PE ratio 1-year high?

CIEN PE ratio reached a 1-year high of 305.20 on January 7, 2026

CIEN PE ratio reached a 1-year low of 70.84 on September 3, 2026

CIEN PE ratio is down -42.47% year-over-year

CIEN PE ratio is up +135.01% over the past 3 years

CIEN PE ratio is currently -97.97% below its historical high of 3,843.75 set on January 24, 2000

CIEN PE ratio is higher than 83.11% of companies in Technology sector

78.003.34+4.47%

September 11, 2026

Current Value: As of today, CIEN PE ratio is 78.00, up +4.47% on September 11, 2026
All-time High: CIEN PE ratio is currently -97.97% below its historical high of 3,843.75 set on January 24, 2000
1-Year High: CIEN PE ratio reached a 1-year high of 305.20 on January 7, 2026
1-Year Low: CIEN PE ratio reached a 1-year low of 70.84 on September 3, 2026
1-Year Change: CIEN PE ratio is down -42.47% year-over-year
Sector rank: CIEN PE ratio is higher than 83.11% of companies in Technology sector

CIEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
PE Ratio	Sep 11, 26	78.00	+4.5%	-18.5%	-47.5%	-71.7%	-42.5%	+135.0%	+333.8%
Price	Sep 11, 26	$349.54	+4.5%	-18.5%	-21.6%	+49.5%	+166.3%	+612.2%	+560.0%
TTM Revenue	Jul 1, 26	$6.02B	+8.1%	–	+8.1%	–	+32.6%	+42.4%	+76.7%
TTM EPS	Jul 1, 26	$4.48	+49.2%	–	+49.2%	–	+362.8%	+203.1%	+52.1%
	Sep 11, 26	16.22	+4.5%	-18.3%	-25.7%	+34.3%	+143.5%	+554.0%	+477.2%
	Sep 11, 26	8.23	+4.4%	-18.4%	-27.4%	+19.1%	+101.2%	+375.7%	+241.5%
	Sep 11, 26	$50.22B	+4.4%	-18.1%	-20.9%	+50.8%	+166.9%	+556.0%	+559.3%
	Sep 11, 26	48.97	+4.4%	-18.1%	-39.4%	-33.6%	+1.7%	+231.3%	+298.1%
Market Cap	Sep 11, 26	$50B	+4.5%	-18.3%	-21.5%	+50.3%	+167.1%	+578.9%	+503.4%

CIEN PE Ratio Highs Comparison
Period	High	Date	Current
1M	99.34	Aug 17, 26	-21.5%
3M	163.28	Jun 30, 26	-52.2%
6M	277.92	Mar 25, 26	-71.9%
1Y	305.20	Jan 7, 26	-74.4%
3Y	305.20	Jan 7, 26	-74.4%
5Y	305.20	Jan 7, 26	-74.4%
All	3,843.75	Jan 24, 00	-98.0%

CIEN PE Ratio Lows Comparison
Period	Low	Date	Current
1M	70.84	Sep 3, 26	+10.1%
3M	70.84	Sep 3, 26	+10.1%
6M	70.84	Sep 3, 26	+10.1%
1Y	70.84	Sep 3, 26	+10.1%
3Y	24.70	Oct 31, 23	+215.8%
5Y	15.41	Jun 16, 22	+406.2%
All	2.44	Nov 9, 17	+3096.7%

What is the current PE ratio of CIEN?: As of today, CIEN PE ratio is 78.00
What is CIEN PE ratio 1-year high?: CIEN PE ratio reached a 1-year high of 305.20 on January 7, 2026
What is CIEN PE ratio 1-year low?: CIEN PE ratio reached a 1-year low of 70.84 on September 3, 2026
What is 1-year change in CIEN PE ratio?: CIEN PE ratio is down -42.47% year-over-year
What is 3-year change in CIEN PE ratio?: CIEN PE ratio is up +135.01% over the past 3 years
How far is CIEN PE ratio from its all-time high?: CIEN PE ratio is currently -97.97% below its historical high of 3,843.75 set on January 24, 2000
How does CIEN PE ratio rank versus sector peers?: CIEN PE ratio is higher than 83.11% of companies in Technology sector

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