CIEN vs. CLS: Ciena vs. Celestica Stock Comparison

November 11, 2026

How do Ciena (CIEN) and Celestica (CLS) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Ciena (CIEN) and Celestica (CLS) both fall under the Technology Hardware & Equipment industry group, but CIEN is classified in Communications Equipment while CLS is classified in Electronic Equipment, Instruments & Components.

Company profile comparison for Ciena (CIEN) and Celestica (CLS)
Profile Item	CIEN	CLS
Name	Ciena Corp.	Celestica Inc.
Country/Region	United States	Canada
GICS Sector	Information Technology	Information Technology
GICS Industry Group	Technology Hardware & Equipment	Technology Hardware & Equipment
GICS Industry	Communications Equipment	Electronic Equipment, Instruments & Components
GICS Sub-Industry	Communications Equipment	Electronic Manufacturing Services
Market Capitalization	34.51 billion USD	26.06 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	February 7, 1997	June 30, 1998
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

CIEN

CLS

GSPC

Ciena (CIEN) vs. Celestica (CLS), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Ciena (CIEN) and Celestica (CLS). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Ciena (CIEN) and Celestica (CLS). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
Total Return (1Y)	36.49%	-30.98%
Total Return (3Y, Annualized)	84.56%	108.72%
Total Return (5Y, Annualized)	35.01%	80.82%

Risk Profile

Drawdown History

CIEN

CLS

GSPC

Ciena (CIEN) vs. Celestica (CLS), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Ciena (CIEN) and Celestica (CLS). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
Volatility (1Y, Annualized)	81.12%	80.89%
Beta (5Y)	1.39	2.16
Max Drawdown (5Y)	-63.19%	-56.47%
Avg. Volume (3M)	2.83M	2.61M

Risk-Adjusted Performance

Risk-Return Positioning

CIEN and CLS are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
Sharpe Ratio (1Y)	0.40	-0.44
Sortino Ratio (1Y)	0.56	-0.59

Profitability

ROE (TTM)

Both Ciena (CIEN) at 22.40% and Celestica (CLS) at 30.23% sit in the top peer quartile for ROE, suggesting each generates more profit from shareholders’ equity than typical industry peers.

CIEN

Technology Hardware & Equipment industry group

22.40%

Max: 42.47%
CIEN: 22.40%
Q3: 19.13%
Median: 11.00%
Q1: 1.63%
Min: -20.62%

CLS

Technology Hardware & Equipment industry group

30.23%

Max: 42.47%
CLS: 30.23%
Q3: 19.13%
Median: 11.00%
Q1: 1.63%
Min: -20.62%

Ciena (CIEN) vs. Celestica (CLS): A comparison of their ROE against the Technology Hardware & Equipment industry group benchmark.

Net Margin (TTM)

Both Ciena (CIEN) at 10.87% and Celestica (CLS) at 6.83% keep about the typical share of revenue as profit for their industries — neither bottom line stands out from peers.

CIEN

Technology Hardware & Equipment industry group

10.87%

Max: 27.60%
Q3: 11.66%
CIEN: 10.87%
Median: 4.08%
Q1: 0.00%
Min: -11.02%

CLS

Technology Hardware & Equipment industry group

6.83%

Max: 27.60%
Q3: 11.66%
CLS: 6.83%
Median: 4.08%
Q1: 0.00%
Min: -11.02%

Ciena (CIEN) vs. Celestica (CLS): A comparison of their net margin against the Technology Hardware & Equipment industry group benchmark.

Operating Margin (TTM)

Both Ciena (CIEN) at 18.08% and Celestica (CLS) at 7.91% run core operations about as efficiently as their industries’ norm — neither stands out on operating profitability.

CIEN

Technology Hardware & Equipment industry group

18.08%

Max: 36.27%
Q3: 18.36%
CIEN: 18.08%
Median: 8.84%
Q1: 1.46%
Min: -21.39%

CLS

Technology Hardware & Equipment industry group

7.91%

Max: 36.27%
Q3: 18.36%
Median: 8.84%
CLS: 7.91%
Q1: 1.46%
Min: -21.39%

Ciena (CIEN) vs. Celestica (CLS): A comparison of their operating margin against the Technology Hardware & Equipment industry group benchmark.

Profitability Metrics

Profitability metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
ROE (TTM)	22.40%	30.23%
ROA (TTM)	7.73%	8.72%
Net Margin (TTM)	10.87%	6.83%
Operating Margin (TTM)	18.08%	7.91%
Gross Margin (TTM)	44.07%	11.46%

Growth

Revenue Growth

Celestica (CLS) at 28.46% sits in the top revenue growth quartile, while Ciena (CIEN) at 18.79% is closer to the peer norm — faster top-line expansion for CLS.

Ciena (CIEN) vs. Celestica (CLS): A comparison of their Revenue Growth across different time periods.

EPS Growth

Both Ciena (CIEN) at 46.55% and Celestica (CLS) at 98.34% sit in the top peer quartile for EPS growth, so each is compounding per-share earnings faster than typical industry peers.

Ciena (CIEN) vs. Celestica (CLS): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
Revenue Growth (YoY)	18.79%	28.46%
Revenue Growth (3Y CAGR)	9.50%	19.56%
EPS Growth (YoY)	46.55%	98.34%
EPS Growth (3Y CAGR)	-5.27%	82.39%

Financial Strength

Current Ratio (MRQ)

Celestica (CLS) at 1.61 keeps current ratio within its industry’s typical mid-range, while Ciena (CIEN) at 3.80 sits above its industry’s typical mid-range — comfortable liquidity, though possibly with more idle current assets relative to peers.

CIEN

Technology Hardware & Equipment industry group

3.80

Max: 5.34
CIEN: 3.80
Q3: 3.02
Median: 1.95
Q1: 1.32
Min: 0.17

CLS

Technology Hardware & Equipment industry group

1.61

Max: 5.34
Q3: 3.02
Median: 1.95
CLS: 1.61
Q1: 1.32
Min: 0.17

Ciena (CIEN) vs. Celestica (CLS): A comparison of their current ratio against the Technology Hardware & Equipment industry group benchmark.

Debt / Equity (MRQ)

Celestica (CLS) at 0.17 carries an industry-typical debt-to-equity mix, while Ciena (CIEN) at 1.07 uses more debt funding than most peers.

CIEN

Technology Hardware & Equipment industry group

1.07

Max: 1.76
CIEN: 1.07
Q3: 0.78
Median: 0.24
Q1: 0.04
Min: 0.01

CLS

Technology Hardware & Equipment industry group

0.17

Max: 1.76
Q3: 0.78
Median: 0.24
CLS: 0.17
Q1: 0.04
Min: 0.01

Ciena (CIEN) vs. Celestica (CLS): A comparison of their debt-to-equity ratio against the Technology Hardware & Equipment industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
Current Ratio (MRQ)	3.80	1.61
Debt / Equity (MRQ)	1.07	0.17
Net Debt / EBITDA	0.64	-1.72

Dividends

Dividend Yield (TTM)

Neither Ciena (CIEN) nor Celestica (CLS) pays a dividend this period — they may reinvest, use buybacks, or simply not return cash through dividends.

CIEN

Technology Hardware & Equipment industry group

0.00%

Max: 0.73%
Q3: 0.31%
CIEN: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

CLS

Technology Hardware & Equipment industry group

0.00%

Max: 0.73%
Q3: 0.31%
CLS: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Ciena (CIEN) vs. Celestica (CLS): A comparison of their dividend yield against the Technology Hardware & Equipment industry group benchmark.

Dividend Payout Ratio (TTM)

Neither Ciena (CIEN) nor Celestica (CLS) pays a dividend this period — they may reinvest, use buybacks, or simply not return cash through dividends.

CIEN

Technology Hardware & Equipment industry group

0.00%

Max: 32.27%
Q3: 14.48%
CIEN: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

CLS

Technology Hardware & Equipment industry group

0.00%

Max: 32.27%
Q3: 14.48%
CLS: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Ciena (CIEN) vs. Celestica (CLS): A comparison of their payout ratio against the Technology Hardware & Equipment industry group benchmark.

Dividend Metrics

Dividend metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
Dividend Yield (TTM)	0.00%	0.00%
Dividend Payout Ratio (TTM)	0.00%	0.00%

Valuation

P/E Ratio (TTM)

Celestica (CLS) at 19.50 is near its industry’s usual P/E ratio, while Ciena (CIEN) at 54.45 sits in the richer quartile — CIEN needs stronger growth or earnings quality to justify the premium.

CIEN

Technology Hardware & Equipment industry group

54.45

Max: 69.48
CIEN: 54.45
Q3: 41.02
Median: 26.39
Q1: 19.36
Min: 6.07

CLS

Technology Hardware & Equipment industry group

19.50

Max: 69.48
Q3: 41.02
Median: 26.39
CLS: 19.50
Q1: 19.36
Min: 6.07

Ciena (CIEN) vs. Celestica (CLS): A comparison of their P/E ratio against the Technology Hardware & Equipment industry group benchmark.

P/S Ratio (TTM)

On P/S ratio, both Ciena (CIEN) at 5.73 and Celestica (CLS) at 1.43 are priced roughly in line with their industries — neither looks cheap nor rich on a sales basis.

CIEN

Technology Hardware & Equipment industry group

5.73

Max: 11.30
Q3: 5.82
CIEN: 5.73
Median: 2.56
Q1: 1.05
Min: 0.00

CLS

Technology Hardware & Equipment industry group

1.43

Max: 11.30
Q3: 5.82
Median: 2.56
CLS: 1.43
Q1: 1.05
Min: 0.00

Ciena (CIEN) vs. Celestica (CLS): A comparison of their P/S ratio against the Technology Hardware & Equipment industry group benchmark.

P/B Ratio (MRQ)

Celestica (CLS) at 4.19 sits near its industry’s typical P/B ratio, while Ciena (CIEN) at 11.30 prices above its benchmark range — CIEN looks rich relative to book.

CIEN

Technology Hardware & Equipment industry group

11.30

CIEN: 11.30
Max: 10.75
Q3: 5.52
Median: 3.17
Q1: 1.79
Min: 0.33

CLS

Technology Hardware & Equipment industry group

4.19

Max: 10.75
Q3: 5.52
CLS: 4.19
Median: 3.17
Q1: 1.79
Min: 0.33

Ciena (CIEN) vs. Celestica (CLS): A comparison of their P/B ratio against the Technology Hardware & Equipment industry group benchmark.

Valuation Metrics

Valuation metrics for Ciena (CIEN) and Celestica (CLS)
Metric	CIEN	CLS
P/E Ratio (TTM)	54.45	19.50
P/S Ratio (TTM)	5.73	1.43
P/B Ratio (MRQ)	11.30	4.19
Free Cash Flow Yield (TTM)	1.84%	3.08%