Quest Diagnostics Incorporated (DGX) vs The Goldman Sachs Group, Inc. (GS): Which Is the Better Buy in 2026?
As of 2026-11-01, DGX is overvalued at $252, with a DCF intrinsic value of $129 and a margin of safety of -95%. GS is undervalued at $895, with an intrinsic value of $1584 and a margin of safety of 44%. Of the two, GS has the wider margin of safety.
Rewards
- ★Gross margin of 81.3% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
- ★Share count has been reduced by 11% over the past 4 years through buybacks, increasing each share's claim on earnings.
- ★Each dollar of retained earnings has created $2.58 of earning power — management is an exceptional capital allocator.
Risks
- ⚠Each dollar of retained earnings has produced only $0.36 of earning power — shareholders may have been better served by dividends.
- ⚠Trailing P/E of 25.1x is 31% above the historical average of 19.1x — the stock trades at a premium to its own history.
- ⚠Insiders have sold $8.2M worth of stock in the past 3 months — significant insider liquidation.
- ⚠Altman Z-Score of 0.25 places the company in the distress zone — financial patterns resemble those of companies that experienced bankruptcy.
- ⚠5 insider sales totaling $12.2M with no purchases in the past 3 months — insiders are reducing their exposure.
Key Valuation Metrics
Learn more →Historical Fundamentals
Learn more →Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation. The dashed forward point is the forward P/E — today's price ÷ analyst consensus EPS.
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation. The dashed forward point is the forward P/E — today's price ÷ analyst consensus EPS.
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation. The dashed forward point is the forward P/E — today's price ÷ analyst consensus EPS.
$1 Retained Earnings Test
Learn more →> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
Discounted Cash Flow (DCF) Analysis
Learn more →Reverse DCF — Market-Implied Growth
Learn more →What growth rate is the market pricing in at $252?
The market implies +14.2% Owner Earnings growth, above historical trends.
Standard FCF implies a demanding +10.5%, reflecting heavy growth investment.
Requires positive FCF to compute implied growth rate.
Economic Moat Score
Learn more →Narrow moat with margin stability as the key competitive advantage. Improving roic consistency would strengthen the moat.
Narrow moat with reinvestment efficiency as the key competitive advantage. Improving margin stability would strengthen the moat.
Forensic Accounting
Learn more →M-Score Trend
M-Score Trend
Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
Ownership Breakdown
Learn more →High insider ownership aligns management incentives with shareholders. Institutional concentration can indicate smart-money conviction but also crowding risk.
Insider Buying Activity
Learn more →Open market purchases · includes direct & indirect ownership · excludes option exercises.
Insider Selling Activity
Learn more →Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives.
🎭 Mr. Market's Mood
Learn more →"Market is optimistic — be cautious and ensure you have a margin of safety"
"Market is pricing this stock without strong emotion in either direction"
Composite sentiment score based on market signals. Inspired by Buffett’s "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
⚖️ Buffett Signal
Learn more →The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.
The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.
Frequently Asked Questions: DGX vs GS
Is Quest Diagnostics Incorporated or The Goldman Sachs Group, Inc. more undervalued in 2026?▼
Based on our discounted cash flow model, GS trades at a 43.5% margin of safety (intrinsic value $1584 vs. price $895), compared to DGX's -94.7% margin of safety (intrinsic $129 vs. $252).
Which stock has a wider economic moat, Quest Diagnostics Incorporated or The Goldman Sachs Group, Inc.?▼
GS scores 65/100 (Narrow moat), while DGX scores 56/100 (Narrow moat). The moat score measures competitive advantage durability across ROIC consistency, margin stability, revenue predictability, and reinvestment efficiency.
Is The Goldman Sachs Group, Inc. in financial distress?▼
GS's Altman Z-Score of 0.3 places it in the Distress zone, signaling elevated bankruptcy risk. DGX scores 3.1 (Safe zone). The Altman Z-Score is a five-factor model that predicts insolvency within two years; scores below 1.81 indicate significant distress.
Which stock has higher return on invested capital, Quest Diagnostics Incorporated or The Goldman Sachs Group, Inc.?▼
DGX earns 10.1% ROIC versus GS's 2.2%. A higher ROIC means the company generates more profit per dollar of capital employed, a hallmark of durable competitive advantage in Buffett-style analysis.
Which dividend is safer, Quest Diagnostics Incorporated's or The Goldman Sachs Group, Inc.'s?▼
DGX's dividend earns a safety score of 94/100 (Very Safe), compared to GS's 79/100 (Safe). DGX has raised its dividend for 3 consecutive years.