UNH vs VST: Which Is the Better Buy?
Side-by-side comparison of UnitedHealth Group Incorporated and Vistra Corp. — fair value, conviction, valuation metrics, and QuantHub research signals.
Updated 2026-09-19.
UnitedHealth Group Incorporated · Healthcare
$375.21
+28.2% upside to fair value
Med Conviction
Grade B
High Quality
VS
Vistra Corp. · Utilities
$140.67
-23.0% upside to fair value
Med Conviction
Grade C
QuantHub Verdict
UNH has more upside to fair value
(+28.2%).
These are model outputs — not personalized investment advice.
See all research →
Valuation & Fundamentals
| Metric |
UNH |
VST |
| Current Price |
$375.21 |
$140.67 |
| Fair Value Estimate |
$481.06 |
$108.27 |
| Upside to Fair Value |
+28.2%
|
-23.0%
|
| Market Cap |
$340.7B |
$47.4B |
| Forward P/E |
—
|
—
|
| EV / EBITDA |
15.0x
|
10.3x
|
| Price / Sales |
0.8x
|
3.0x
|
| Price / FCF |
14.4x
|
34.7x
|
| Revenue Growth YoY |
+0.4%
|
-5.5%
|
| Gross Margin |
22.5%
|
13.0%
|
| Operating Margin |
4.8%
|
2.3%
|
| Return on Equity |
14.6%
|
41.5%
|
| Dividend Yield |
2.41% |
0.65% |
| FCF Yield |
6.95%
|
2.88%
|
| Analyst Consensus |
Strong Buy
|
Strong Buy
|
Investment Thesis
UnitedHealth Group is the largest diversified healthcare enterprise in the United States, operating UnitedHealthcare insurance plans alongside Optum Health, Optum Insight, and Optum Rx, with 390,000 employees and a market capitalization of $340.74 billion. The business quality is high: a 14.6% return on equity, $26.07 in free cash flow per share, and a P/FCF of 14.39 demonstrate strong cash gener…
Vistra Corp. is a vertically integrated independent power producer and retail electricity supplier operating roughly 38,700 megawatts of generation across natural gas, nuclear, coal, solar, and battery storage, serving about 4.3 million retail customers in 20 states and the District of Columbia. The business quality is mixed: the diversified PJM and ERCOT fleet plus retail load is a genuine struc…
Accumulation Zones
| Metric |
UNH |
VST |
| Zone Low |
$360.80 |
$81.20 |
| Zone High |
$408.90 |
$92.03 |
| In Buy Zone? |
Yes
|
No
|