Ciena CorporationCIEN

Where CIEN's PEG sits inside its own 10-year distribution, with the yearly high, low and average.

$349.54+14.98 (+4.48%)Previous close
NYSETechnology

CIEN PEG: current value, 10-year range and year-by-year history

9.0Historically pricey

CIEN's peg is higher than 82% of the last 10 years.

PEG History

Historically priceyAbove avgAround avgBelow avgHistorically cheap
CIEN PEG historyCIEN PEG from Jan 2024 to Sep 2026: low 2.99, high 373.27, latest 8.95.-26.6380.75188.13295.51402.89Jan 24Mar 24Apr 24Jun 26Jul 26Sep 26med 10.05

CIEN PEG by year

Yearly range of CIEN’s peg from 2020 to 2026. Over the full period it ranged from 0.2 to 373.3, averaging 5.1.

CIEN PEG — yearly low, average, high and year-end values
YearLowAverageHighYear-end
20268.128.4373.39.0
20243.04.137.637.6
20220.42.16.75.7
20210.20.30.50.5
20200.20.20.30.2

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P/E ratio divided by the earnings growth rate. Peter Lynch's tool for checking whether a higher P/E is actually justified by faster growth. PEG ≤ 1.0 is Lynch's "fairly priced" threshold.

FormulaP/E Ratio / Annual EPS Growth Rate (%)
Full guide
How to read this chart

A low PEG vs the stock's own history suggests the market may not be fully pricing in the growth rate — the combination of P/E and growth looks unusually attractive.

Key caveats
  • Only meaningful for businesses with real, consistent earnings growth. Irrelevant for cyclicals, early-stage companies, and income stocks.
  • Forward PEG is based on analyst estimates that are frequently optimistic — treat it as a sanity check, not a primary signal.

Is CIEN PEG High or Low Right Now?

Ciena Corporation's PEG is currently 9.0, which is historically pricey relative to its 10-year historical range. The 10-year median PEG for CIEN is approximately 0.5. See all CIEN valuation metrics →

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