MRK vs WDC: Which Is the Better Buy?
Side-by-side comparison of Merck & Co., Inc. and Western Digital Corporation — fair value, conviction, valuation metrics, and QuantHub research signals.
Updated 2026-08-06.
Merck & Co., Inc. · Healthcare
$113.87
-12.1% upside to fair value
Grade D
High Quality
VS
Western Digital Corporation · Technology
$519.17
-28.7% upside to fair value
Med Conviction
Grade C+
QuantHub Verdict
MRK has more upside to fair value
(-12.1%).
WDC trades at a lower forward P/E
(27.8x).
These are model outputs — not personalized investment advice.
See all research →
Valuation & Fundamentals
| Metric |
MRK |
WDC |
| Current Price |
$113.87 |
$519.17 |
| Fair Value Estimate |
$100.14 |
$370.00 |
| Upside to Fair Value |
-12.1%
|
-28.7%
|
| Market Cap |
$281.2B |
$178.9B |
| Forward P/E |
32.0x
|
27.8x
|
| EV / EBITDA |
17.3x
|
37.3x
|
| Price / Sales |
4.3x
|
13.9x
|
| Price / FCF |
19.9x
|
51.0x
|
| Revenue Growth YoY |
+4.3%
|
+35.7%
|
| Gross Margin |
75.9%
|
48.9%
|
| Operating Margin |
27.6%
|
34.9%
|
| Return on Equity |
17.9%
|
43.4%
|
| Dividend Yield |
0% |
0.1% |
| FCF Yield |
5.02%
|
2.0%
|
| Analyst Consensus |
Hold
|
Buy
|
Investment Thesis
Merck & Co., Inc. is a leading global healthcare company specializing in pharmaceuticals, vaccines, and animal health products. Its business quality is high, supported by a durable competitive moat anchored in the dominant global position of Keytruda in PD-1/PD-L1 oncology, a strong vaccines portfolio including Gardasil, and scale in R&D and manufacturing. The company benefits from a seasoned lea…
Western Digital is now a pure-play, duopoly hard-disk-drive manufacturer, having spun off its NAND flash business as SanDisk in February 2025 and sold its remaining SanDisk stake for $3.1 billion in February 2026. It is riding the same AI-storage supercycle as SanDisk and Micron, but from the mass-capacity nearline HDD side: hyperscalers are buying every high-capacity drive WDC can make for AI da…
Accumulation Zones
| Metric |
MRK |
WDC |
| Zone Low |
$75.11 |
$278.00 |
| Zone High |
$85.12 |
$315.00 |
| In Buy Zone? |
No
|
No
|