SNDK vs. WDC

Last updated Apr 2, 2026

Compare and contrast key facts about Sandisk Corp (SNDK) and Western Digital Corporation (WDC).

Performance

SNDK vs. WDC - Performance Comparison

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

SNDK vs. WDC - Yearly Performance Comparison

	2026 (YTD)	2025
SNDK Sandisk Corp	191.82%	388.44%
WDC Western Digital Corporation	72.91%	252.78%

Fundamentals

Market Cap SNDK : $108.07B WDC : $111.95B
EPS SNDK : -$6.94 WDC : $10.25
PS Ratio SNDK : 11.64 WDC : 10.30
PB Ratio SNDK : 10.58 WDC : 15.74
Total Revenue (TTM) SNDK : $8.93B WDC : $10.73B
Gross Profit (TTM) SNDK : $3.11B WDC : $4.59B
EBITDA (TTM) SNDK : -$589.00M WDC : $4.32B

Returns By Period

In the year-to-date period, SNDK achieves a 191.82% return, which is significantly higher than WDC's 72.91% return.

SNDK

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

WDC

• 1D: 10.07%
• 1M: 10.29%
• YTD: 72.91%
• 6M: 128.28%
• 1Y: 631.27%
• 3Y*: 118.99%
• 5Y*: 40.85%
• 10Y*: 25.55%

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

Return for Risk

SNDK vs. WDC — Risk / Return Rank

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

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

WDC

WDC Risk / Return Rank: 99
WDC Sharpe Ratio Rank: 100
WDC Sortino Ratio Rank: 99
WDC Omega Ratio Rank: 98
WDC Calmar Ratio Rank: 100
WDC 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.

SNDK vs. WDC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Sandisk Corp (SNDK) and Western Digital Corporation (WDC). 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.

	SNDK	WDC	Difference
Sharpe ratio Return per unit of total volatility	13.55	9.52	+4.03
Sortino ratio Return per unit of downside risk	5.32	5.56	-0.24
Omega ratio Gain probability vs. loss probability	1.77	1.83	-0.05
Calmar ratio Return relative to maximum drawdown	35.26	23.77	+11.48
Martin ratio Return relative to average drawdown	88.02	92.71	-4.69
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SNDK vs. WDC - Sharpe Ratio Comparison

The current SNDK Sharpe Ratio is 13.55, which is higher than the WDC Sharpe Ratio of 9.52. The chart below compares the historical Sharpe Ratios of SNDK and WDC, 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

	SNDK	WDC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	13.55	9.52	+4.03
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.86	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.53	—
Sharpe Ratio (All Time) Calculated using the full available price history	10.44	0.18	+10.27

Correlation

The correlation between SNDK and WDC is 0.60, 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

SNDK vs. WDC - Dividend Comparison

SNDK has not paid dividends to shareholders, while WDC's dividend yield for the trailing twelve months is around 0.15%.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SNDK Sandisk Corp	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
WDC Western Digital Corporation	0.15%	0.19%	0.00%	0.00%	0.00%	0.00%	1.81%	2.36%	5.41%	2.51%	2.94%	3.33%

Drawdowns

SNDK vs. WDC - Drawdown Comparison

The maximum SNDK drawdown since its inception was -47.50%, smaller than the maximum WDC drawdown of -96.20%. Use the drawdown chart below to compare losses from any high point for SNDK and WDC.

Drawdown Indicators

	SNDK	WDC	Difference
Max Drawdown Largest peak-to-trough decline	-47.50%	-96.20%	+48.70%
Max Drawdown (1Y) Largest decline over 1 year	-37.86%	-26.90%	-10.96%
Max Drawdown (5Y) Largest decline over 5 years	—	-60.85%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-70.49%	—
Current Drawdown Current decline from peak	-10.28%	-6.06%	-4.22%
Average Drawdown Average peak-to-trough decline	-15.40%	-52.32%	+36.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	15.39%	6.90%	+8.49%

Volatility

SNDK vs. WDC - Volatility Comparison

Sandisk Corp (SNDK) has a higher volatility of 30.47% compared to Western Digital Corporation (WDC) at 25.05%. This indicates that SNDK's price experiences larger fluctuations and is considered to be riskier than WDC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SNDK	WDC	Difference
Volatility (1M) Calculated over the trailing 1-month period	30.47%	25.05%	+5.42%
Volatility (6M) Calculated over the trailing 6-month period	80.77%	55.31%	+25.46%
Volatility (1Y) Calculated over the trailing 1-year period	100.02%	66.91%	+33.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	97.99%	47.91%	+50.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	97.99%	48.28%	+49.71%

Financials

SNDK vs. WDC - Profitability Comparison

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

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%.

WDC - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Western Digital Corporation reported a gross profit of 1.38B and revenue of 3.02B. Therefore, the gross margin over that period was 45.7%.

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%.

WDC - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Western Digital Corporation reported an operating income of 963.00M and revenue of 3.02B, resulting in an operating margin of 31.9%.

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%.

WDC - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Western Digital Corporation reported a net income of 1.84B and revenue of 3.02B, resulting in a net margin of 61.1%.