CIEN vs. SNDK

Last updated Apr 2, 2026

Compare and contrast key facts about Ciena Corporation (CIEN) and Sandisk Corp (SNDK).

Performance

CIEN vs. SNDK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Ciena Corporation (CIEN) and Sandisk Corp (SNDK). The values are adjusted to include any dividend payments, if applicable.

CIEN vs. SNDK - Yearly Performance Comparison

	2026 (YTD)	2025
CIEN Ciena Corporation	77.62%	190.77%
SNDK Sandisk Corp	191.82%	388.44%

Fundamentals

Market Cap CIEN : $60.56B SNDK : $108.07B
EPS CIEN : $1.58 SNDK : -$6.94
PS Ratio CIEN : 11.77 SNDK : 11.64
PB Ratio CIEN : 21.69 SNDK : 10.58
Total Revenue (TTM) CIEN : $5.12B SNDK : $8.93B
Gross Profit (TTM) CIEN : $2.09B SNDK : $3.11B
EBITDA (TTM) CIEN : $450.47M SNDK : -$589.00M

Returns By Period

In the year-to-date period, CIEN achieves a 77.62% return, which is significantly lower than SNDK's 191.82% return.

CIEN

• 1D: 7.00%
• 1M: 17.43%
• YTD: 77.62%
• 6M: 173.79%
• 1Y: 574.99%
• 3Y*: 99.24%
• 5Y*: 48.98%
• 10Y*: 36.24%

SNDK

• 1D: 9.03%
• 1M: 11.90%
• YTD: 191.82%
• 6M: 471.94%
• 1Y: 1,339.89%
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

Return for Risk

CIEN vs. SNDK — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

CIEN

CIEN Risk / Return Rank: 99
CIEN Sharpe Ratio Rank: 100
CIEN Sortino Ratio Rank: 99
CIEN Omega Ratio Rank: 99
CIEN Calmar Ratio Rank: 100
CIEN Martin Ratio Rank: 100

SNDK

SNDK Risk / Return Rank: 99
SNDK Sharpe Ratio Rank: 100
SNDK Sortino Ratio Rank: 99
SNDK Omega Ratio Rank: 98
SNDK Calmar Ratio Rank: 100
SNDK Martin Ratio Rank: 100

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

CIEN vs. SNDK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Ciena Corporation (CIEN) and Sandisk Corp (SNDK). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	CIEN	SNDK	Difference
Sharpe ratio Return per unit of total volatility	8.98	13.55	-4.57
Sortino ratio Return per unit of downside risk	5.28	5.32	-0.04
Omega ratio Gain probability vs. loss probability	1.85	1.77	+0.08
Calmar ratio Return relative to maximum drawdown	33.13	35.26	-2.13
Martin ratio Return relative to average drawdown	96.27	88.02	+8.25
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CIEN vs. SNDK - Sharpe Ratio Comparison

The current CIEN Sharpe Ratio is 8.98, which is lower than the SNDK Sharpe Ratio of 13.55. The chart below compares the historical Sharpe Ratios of CIEN and SNDK, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	CIEN	SNDK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	8.98	13.55	-4.57
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.05	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.84	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.06	10.44	-10.38

Correlation

The correlation between CIEN and SNDK is 0.49, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

CIEN vs. SNDK - Dividend Comparison

Neither CIEN nor SNDK has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

CIEN vs. SNDK - Drawdown Comparison

The maximum CIEN drawdown since its inception was -99.51%, which is greater than SNDK's maximum drawdown of -47.50%. Use the drawdown chart below to compare losses from any high point for CIEN and SNDK.

Drawdown Indicators

	CIEN	SNDK	Difference
Max Drawdown Largest peak-to-trough decline	-99.51%	-47.50%	-52.01%
Max Drawdown (1Y) Largest decline over 1 year	-17.73%	-37.86%	+20.13%
Max Drawdown (5Y) Largest decline over 5 years	-49.54%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-49.54%	—	—
Current Drawdown Current decline from peak	-60.31%	-10.28%	-50.03%
Average Drawdown Average peak-to-trough decline	-87.35%	-15.40%	-71.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.10%	15.39%	-9.29%

Volatility

CIEN vs. SNDK - Volatility Comparison

Ciena Corporation (CIEN) and Sandisk Corp (SNDK) have volatilities of 29.90% and 30.47%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CIEN	SNDK	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.90%	30.47%	-0.57%
Volatility (6M) Calculated over the trailing 6-month period	50.11%	80.77%	-30.66%
Volatility (1Y) Calculated over the trailing 1-year period	64.62%	100.02%	-35.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	46.68%	97.99%	-51.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	43.48%	97.99%	-54.51%

Financials

CIEN vs. SNDK - Profitability Comparison

The chart below illustrates the profitability comparison between Ciena Corporation and Sandisk Corp over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

CIEN - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Ciena Corporation reported a gross profit of 625.52M and revenue of 1.43B. Therefore, the gross margin over that period was 43.8%.

SNDK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Sandisk Corp reported a gross profit of 1.54B and revenue of 3.03B. Therefore, the gross margin over that period was 50.9%.

CIEN - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Ciena Corporation reported an operating income of 189.41M and revenue of 1.43B, resulting in an operating margin of 13.3%.

SNDK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Sandisk Corp reported an operating income of 1.07B and revenue of 3.03B, resulting in an operating margin of 35.2%.

CIEN - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Ciena Corporation reported a net income of 150.28M and revenue of 1.43B, resulting in a net margin of 10.5%.

SNDK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Sandisk Corp reported a net income of 803.00M and revenue of 3.03B, resulting in a net margin of 26.6%.