SNDK vs UMC vs WDC Stock Comparison

Sandisk, United Microelectronics and Western Digital Prices as of Oct 28, 2026 Peers: Industry group
SNDK Sandisk Corp
$1,404.77 -18.0% 1M +700.3% 1Y
Market cap
$205.10B
P/E
18.1x
Revenue (TTM)
$20.25B
Div. yield
–
Server and Storage Hardware Technology
5 wins
UMC United Microelectronics Corp
$18.84 -21.0% 1M +146.9% 1Y
Market cap
$47.43B
P/E
17.4x
Revenue (TTM)
$14.11B
Div. yield
2.12%
Semiconductor Manufacturing Technology
4 wins
WDC Western Digital Corp
$396.42 -12.5% 1M +217.3% 1Y
Market cap
$148.39B
P/E
14.5x
Revenue (TTM)
$14.48B
Div. yield
0.14%
Server and Storage Hardware Technology
3 wins

Head to Head

12 decided of 12

Sandisk leads on 5 of the 12 questions below (Sandisk 5, United Microelectronics 4, Western Digital 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionSNDKUMCWDCLeader
Larger companyMarket capitalisation $205.10B $47.43B $148.39B SNDK
Cheaper on earningsLower P/E, profitable companies only 18.1x 17.4x 14.5x WDC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 6.8x 17.1x 16.5x SNDK
Faster revenue growthRevenue growth, trailing twelve months +175.3% +87.7% +43.0% SNDK
More profitableNet margin, trailing twelve months 56.5% 18.7% 69.2% WDC
Better return on capitalReturn on invested capital 73.7% 11.6% 53.8% SNDK
Less leveragedLower net debt / EBITDA — -1.0x -0.1x UMC
Higher dividend yieldTrailing dividend yield 0.00% 2.12% 0.14% UMC
Better 1-year returnPrice return, last 12 months +700.3% +146.9% +217.3% SNDK
Better 5-year returnAnnualised price return, 5 years — +12.9%/yr +58.6%/yr WDC
Less volatileAnnualised volatility, 1 year 111.7% 64.5% 81.3% UMC
Higher overall scoreMean of the five percentile scores vs peers 79/100 80/100 78/100 UMC

Percentile Scorecard

SNDKUMCWDC

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisSNDKUMCWDC
Valuation 66 #39 of 111 93 #8 of 94 50 #56 of 111
Growth 100 #1 of 108 79 #20 of 92 98 #3 of 108
Profitability 100 #1 of 104 73 #25 of 90 98 #3 of 104
Financial Health 81 #23 of 115 66 #34 of 99 68 #38 of 115
Shareholder Returns 51 #39 of 78 89 #9 of 73 78 #18 of 78
Overall 79 80 78
  • SNDK ranked among 121 companies in Computer Hardware
  • UMC ranked among 103 companies in Semiconductors
  • WDC ranked among 121 companies in Computer Hardware

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodSNDKUMCWDCSPY
1 month -18.0%-21.0%-12.5% +0.9%
3 months +38.3%+10.1%-14.2% +5.9%
6 months +32.0%+47.8%-4.0% +8.5%
Year to date +491.8%+139.7%+130.1% +13.3%
1 year +700.3%+146.9%+217.3% +12.4%
3 years —+166.5%+1,245.6% +88.1%
3 years, per year —+38.7%+138.0% +23.5%
5 years —+83.4%+903.1% +68.2%
5 years, per year —+12.9%+58.6% +11.0%
10 years —+907.5%+785.9% +263.4%
10 years, per year —+26.0%+24.4% +13.8%

Risk

MeasureSNDKUMCWDCSPY
Volatility, 1Y 111.7%64.5%81.3% 12.7%
Downside volatility, 1Y 106.3%56.8%82.5% 12.7%
Beta vs S&P 500, 1Y 3.991.783.18 1.00
Return / volatility, 1Y 6.272.282.67 0.98
Max drawdown, 5Y -56.5%-57.3%-55.5% -25.4%
From 52-week high -39.8%-32.7%-46.9% -0.9%
52-week high $2,335.00$28.01$746.23 $779.14
52-week low $175.53$7.02$124.92 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleSNDKUMCWDC
P/E now vs peer median 18.1xmedian 33.5x 17.4xmedian 46.0x 14.5xmedian 33.5x
P/S now vs peer median 10.1xmedian 2.8x 3.4xmedian 7.9x 10.2xmedian 2.8x
EV/EBITDA now vs peer median 16.0xmedian 19.6x 11.6xmedian 28.3x 24.2xmedian 19.6x
P/FCF now vs peer median 17.8xmedian 29.8x 21.7xmedian 41.4x 34.6xmedian 29.8x
P/B now vs peer median 13.0xmedian 2.9x 3.2xmedian 4.6x 15.9xmedian 2.9x
PEG now vs peer median —median 1.10 2.74median 2.30 0.19median 1.10

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsSNDKUMCWDC
Revenue $20.25B $14.11B $14.48B
Gross profit $14.47B $2.67B $7.62B
Operating income $12.39B $1.81B $5.71B
Net income $11.43B $2.64B $10.02B
Free cash flow $11.49B $2.19B $4.29B
R&D $1.33B $595.72M $1.15B
EPS (diluted) $73.76 $1.07 $26.10
Cash & equivalents $4.76B $4.48B $1.31B
Total debt – $781.92M $12.58B
Shares (diluted) 155.00M 2.47B 384.00M
Enterprise value $193.62B $31.80B $138.22B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricSNDKUMCWDC
P/E 18.1x 17.4x 14.5x
P/FCF 17.8x 21.7x 34.6x
P/Operating cash flow 17.6x 12.6x 30.5x
P/S 10.1x 3.4x 10.2x
P/B 13.0x 3.2x 15.9x
P/Tangible book 13.0x 3.2x 15.9x
EV/EBITDA 16.0x 11.6x 24.2x
EV/EBIT 16.2x 24.2x 25.9x
EV/Revenue 9.9x 3.1x 10.2x
EV/FCF 17.4x 20.0x 34.5x
EV/Operating cash flow 17.2x 11.6x 30.4x
PEG (3Y EPS CAGR) – 2.74 0.19

Growth

14 metrics
MetricSNDKUMCWDC
Revenue growth (1Y) 175.3% 87.7% 43.0%
Revenue CAGR (3Y) – 22.9% 57.4%
Gross profit growth (1Y) 554.2% 22.7% 85.2%
Gross profit CAGR (3Y) – -2.4% 126.7%
Operating income growth (1Y) 999.7% 29.9% 104.4%
Operating income CAGR (3Y) – -6.7% 85.5%
Net income growth (1Y) 796.7% 97.8% 288.7%
Net income CAGR (3Y) – 5.5% 83.2%
EPS growth (1Y) 751.8% 97.8% 286.8%
EPS CAGR (3Y) – 6.4% 75.8%
Operating cash flow growth (1Y) 13,794% 19.0% 108.7%
Operating cash flow CAGR (3Y) – 5.1% 88.3%
Free cash flow growth (1Y) 9,678% 410.9% 121.1%
Free cash flow CAGR (3Y) – 11.3% 66.0%

Profitability

14 metrics
MetricSNDKUMCWDC
Gross margin 71.5% 18.9% 52.6%
EBITDA margin 62.0% 26.7% 42.1%
Operating margin 61.2% 12.8% 39.4%
Pretax margin 64.3% 30.5% 73.2%
Net margin 56.5% 18.7% 69.2%
FCF margin 56.8% 15.5% 29.6%
Operating cash flow margin 57.6% 26.7% 33.6%
Return on equity 77.5% 18.4% 110.0%
Return on assets 57.8% 12.5% 71.3%
Return on invested capital 73.7% 11.6% 53.8%
Return on capital employed 87.2% 9.6% 57.3%
Asset turnover 1.0x 0.7x 1.0x
Cash conversion (OCF / net income) 1.0x 1.4x 0.5x
Stock comp / revenue 1.1% 0.1% 1.6%

Financial Health

11 metrics
MetricSNDKUMCWDC
Debt / assets – 3.7% 5.5%
Debt / equity – 0.1x 0.1x
Net debt / EBITDA – -1.0x -0.1x
Debt / FCF – 0.4x 0.2x
Liabilities / assets 30.1% 30.3% 34.3%
Equity / assets 69.9% 69.7% 65.7%
Interest coverage 169.7x 33.0x 48.8x
Current ratio 2.3x 3.3x 1.4x
Quick ratio 12.2x 2.6x 0.9x
Cash ratio 0.9x 2.0x 0.3x
Altman Z-score 21.87 – 21.60

Shareholder Returns

7 metrics
MetricSNDKUMCWDC
Dividend yield – 2.1% 0.1%
Net buyback yield 0.0% 0.6% 2.0%
Shareholder yield 0.0% 2.7% 2.2%
Payout ratio (earnings) – – 2.0%
Payout ratio (FCF) – – 4.6%
Dividend growth (1Y) – – 151.3%
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusSNDKUMCWDC
Forward P/E 6.8xFY2027 17.1xFY2026 16.5xFY2027
EPS, next fiscal year $206.11FY2027 $1.10FY2026 $24.04FY2027
EPS growth, next FY +190.8%FY2027 +107.5%FY2026 +135.2%FY2027
EPS growth, the year after +36.1% -2.7% +70.9%
Revenue, next fiscal year $50.93BFY2027 $8.52BFY2026 $20.04BFY2027
Revenue growth, next FY +151.5%FY2027 +12.1%FY2026 +55.1%FY2027
Revenue growth, the year after +10.4% +24.7% +39.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersSNDKUMCWDC
Held by institutions 74.3% 7.1% 93.7%
Institutions holding 1,815 362 1,846
Change in shares held, QoQ -1.9% +3.2% -1.3%
Institutions buying 1,268 220 1,127
Institutions selling 457 109 597
Buyers to sellers 2.77 2.02 1.89

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

SNDKUMCWDC
SNDK 1.00 0.41 0.73
UMC 0.41 1.00 0.36
WDC 0.73 0.36 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, SNDK, UMC and WDC?

Sandisk (SNDK) is the largest by market capitalisation: Sandisk (SNDK) $205.10B, United Microelectronics (UMC) $47.43B, Western Digital (WDC) $148.39B.

Which stock is cheaper, SNDK, UMC and WDC?

Western Digital (WDC) trades on the lowest price-to-earnings ratio (Sandisk (SNDK) 18.1x, United Microelectronics (UMC) 17.4x, Western Digital (WDC) 14.5x). On next year's consensus earnings, Sandisk (SNDK) is cheapest (Sandisk (SNDK) 6.8x, United Microelectronics (UMC) 17.1x, Western Digital (WDC) 16.5x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Sandisk (SNDK) grew revenue fastest over the trailing twelve months: Sandisk (SNDK) +175.3%, United Microelectronics (UMC) +87.7%, Western Digital (WDC) +43.0%.

Which company is more profitable?

Western Digital (WDC) has the highest net margin (Sandisk (SNDK) 56.5%, United Microelectronics (UMC) 18.7%, Western Digital (WDC) 69.2%). On return on invested capital, Sandisk (SNDK) leads (Sandisk (SNDK) 73.7%, United Microelectronics (UMC) 11.6%, Western Digital (WDC) 53.8%).

Which stock has performed better?

Over the past year Sandisk (SNDK) returned the most: Sandisk (SNDK) +700.3%, United Microelectronics (UMC) +146.9%, Western Digital (WDC) +217.3%. Over five years, Western Digital (WDC) compounded fastest (United Microelectronics (UMC) +12.9%/yr, Western Digital (WDC) +58.6%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

United Microelectronics (UMC) has the highest dividend yield: Sandisk (SNDK) 0.00%, United Microelectronics (UMC) 2.12%, Western Digital (WDC) 0.14%. Sandisk (SNDK) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, United Microelectronics (UMC) has been the steadiest (Sandisk (SNDK) 111.7%, United Microelectronics (UMC) 64.5%, Western Digital (WDC) 81.3%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, SNDK, UMC and WDC?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Sandisk (SNDK) leads on 5. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.