What is the current PE ratio of CIEN?

As of today, CIEN PE ratio is 99.60

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 -44.15% year-over-year

CIEN PE ratio is up +229.04% over the past 3 years

CIEN PE ratio is currently -97.41% below its historical high of 3,843.75 set on January 24, 2000

CIEN PE ratio is higher than 87.00% of companies in Technology sector

99.600.60+0.61%

4 min ago

Current Value: As of today, CIEN PE ratio is 99.60, up +0.61% in the most recent trading session on October 7, 2026
All-time High: CIEN PE ratio is currently -97.41% 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 -44.15% year-over-year
Sector rank: CIEN PE ratio is higher than 87.00% of companies in Technology sector

CIEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
PE Ratio	Oct 7, 26	99.60	+0.6%	+39.0%	+6.5%	-63.8%	-44.1%	+229.0%	+455.5%
Price	Oct 7, 26	$446.33	+0.6%	+39.0%	+6.5%	+90.8%	+194.7%	+897.4%	+745.2%
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 7, 26	20.71	+0.6%	+39.1%	+6.8%	+71.4%	+164.2%	+816.4%	+639.6%
	Oct 7, 26	10.51	+0.6%	+39.0%	+6.7%	+52.1%	+134.1%	+569.4%	+337.9%
	Oct 7, 26	$63.95B	+0.6%	+38.5%	+6.7%	+92.1%	+194.3%	+811.9%	+742.1%
	Oct 7, 26	62.36	+0.6%	+38.5%	+6.7%	-15.5%	+29.5%	+360.9%	+408.6%
Market Cap	Oct 7, 26	$63B	+0.6%	+39.0%	+6.7%	+91.9%	+195.6%	+850.7%	+672.7%

CIEN PE Ratio Highs Comparison
Period	High	Date	Current
1M	99.60	Oct 7, 26	at high
3M	103.17	Jul 9, 26	-3.5%
6M	208.69	Jun 2, 26	-52.3%
1Y	305.20	Jan 7, 26	-67.4%
3Y	305.20	Jan 7, 26	-67.4%
5Y	305.20	Jan 7, 26	-67.4%
All	3,843.75	Jan 24, 00	-97.4%

CIEN PE Ratio Lows Comparison
Period	Low	Date	Current
1M	71.33	Sep 14, 26	+39.6%
3M	70.84	Sep 3, 26	+40.6%
6M	70.84	Sep 3, 26	+40.6%
1Y	70.84	Sep 3, 26	+40.6%
3Y	24.70	Oct 31, 23	+303.2%
5Y	15.41	Jun 16, 22	+546.3%
All	2.44	Nov 9, 17	+3982.0%

What is the current PE ratio of CIEN?: As of today, CIEN PE ratio is 99.60
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 -44.15% year-over-year
What is 3-year change in CIEN PE ratio?: CIEN PE ratio is up +229.04% over the past 3 years
How far is CIEN PE ratio from its all-time high?: CIEN PE ratio is currently -97.41% 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 87.00% of companies in Technology sector

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