SNDK vs WDC: Which Is the Better Buy?
Side-by-side comparison of Sandisk Corporation and Western Digital Corporation — fair value, conviction, valuation metrics, and QuantHub research signals.
Updated 2026-09-19.
Sandisk Corporation · Technology
$1,614.39
-25.3% upside to fair value
Med Conviction
Grade C
VS
Western Digital Corporation · Technology
$441.36
-16.8% upside to fair value
Med Conviction
Grade C
QuantHub Verdict
WDC has more upside to fair value
(-16.8%).
These are model outputs — not personalized investment advice.
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Valuation & Fundamentals
| Metric |
SNDK |
WDC |
| Current Price |
$1,614.39 |
$441.36 |
| Fair Value Estimate |
$1,206.72 |
$367.30 |
| Upside to Fair Value |
-25.3%
|
-16.8%
|
| Market Cap |
$239.1B |
$152.1B |
| Forward P/E |
—
|
—
|
| EV / EBITDA |
17.9x
|
17.4x
|
| Price / Sales |
11.8x
|
11.8x
|
| Price / FCF |
20.6x
|
47.3x
|
| Revenue Growth YoY |
+371.6%
|
+43.8%
|
| Gross Margin |
71.5%
|
48.9%
|
| Operating Margin |
61.2%
|
34.9%
|
| Return on Equity |
93.1%
|
118.6%
|
| Dividend Yield |
0% |
0.12% |
| FCF Yield |
4.84%
|
2.12%
|
| Analyst Consensus |
Strong Buy
|
Strong Buy
|
Investment Thesis
Sandisk designs and manufactures NAND flash storage solutions, including SSDs, embedded memory, removable cards, USB devices, and wafers, employing roughly 11,100 people from its Milpitas, California headquarters. The business is currently generating extraordinary profitability, with TTM gross margin of 71.5%, operating margin of 61.2%, net margin of 56.5%, and ROE of 93.1%, while revenue grew 37…
Western Digital designs and manufactures hard disk drives and flash-based storage for data centers, client devices, and consumer markets, and it is currently enjoying an extraordinary demand surge tied to AI infrastructure buildouts. In the most recent quarter, revenue grew 43.8% year over year and earnings grew 1143.2% year over year, while trailing twelve-month gross margin reached 48.9%, opera…
Accumulation Zones
| Metric |
SNDK |
WDC |
| Zone Low |
$905.04 |
$275.48 |
| Zone High |
$1,025.71 |
$312.20 |
| In Buy Zone? |
No
|
No
|