What is the current PE ratio of CIEN?

As of today, CIEN PE ratio is 81.05

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 -62.38% year-over-year

CIEN PE ratio is up +192.18% over the past 3 years

CIEN PE ratio is currently -97.89% below its historical high of 3,843.75 set on January 24, 2000

CIEN PE ratio is higher than 84.08% of companies in Technology sector

81.052.69+3.43%

October 28, 2026

Current Value: As of today, CIEN PE ratio is 81.05, up +3.43% on October 28, 2026
All-time High: CIEN PE ratio is currently -97.89% 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 -62.38% year-over-year
Sector rank: CIEN PE ratio is higher than 84.08% of companies in Technology sector

CIEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
PE Ratio	Oct 28, 26	81.05	+3.4%	+5.5%	+3.6%	-70.6%	-62.4%	+192.2%	+339.5%
Price	Oct 28, 26	$363.21	+3.4%	+5.5%	+3.6%	+55.3%	+98.4%	+785.5%	+568.4%
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%
	Oct 28, 26	16.85	+3.4%	+5.5%	+3.8%	+39.5%	+77.7%	+714.0%	+485.1%
	Oct 28, 26	8.55	+3.4%	+5.4%	+3.8%	+23.7%	+57.8%	+493.8%	+246.2%
	Oct 28, 26	$52.16B	+3.4%	+5.5%	+3.8%	+56.7%	+99.2%	+707.8%	+566.1%
	Oct 28, 26	50.86	+3.4%	+5.5%	+3.8%	-31.1%	-12.4%	+308.2%	+302.4%
Market Cap	Oct 28, 26	$52B	+3.4%	+5.5%	+3.8%	+56.2%	+99.1%	+744.0%	+511.1%

CIEN PE Ratio Highs Comparison
Period	High	Date	Current
1M	100.36	Oct 9, 26	-19.2%
3M	100.36	Oct 9, 26	-19.2%
6M	208.69	Jun 2, 26	-61.2%
1Y	305.20	Jan 7, 26	-73.4%
3Y	305.20	Jan 7, 26	-73.4%
5Y	305.20	Jan 7, 26	-73.4%
All	3,843.75	Jan 24, 00	-97.9%

CIEN PE Ratio Lows Comparison
Period	Low	Date	Current
1M	71.46	Oct 23, 26	+13.4%
3M	70.84	Sep 3, 26	+14.4%
6M	70.84	Sep 3, 26	+14.4%
1Y	70.84	Sep 3, 26	+14.4%
3Y	24.70	Oct 31, 23	+228.1%
5Y	15.41	Jun 16, 22	+426.0%
All	2.44	Nov 9, 17	+3221.7%

What is the current PE ratio of CIEN?: As of today, CIEN PE ratio is 81.05
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 -62.38% year-over-year
What is 3-year change in CIEN PE ratio?: CIEN PE ratio is up +192.18% over the past 3 years
How far is CIEN PE ratio from its all-time high?: CIEN PE ratio is currently -97.89% 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 84.08% of companies in Technology sector

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