Compare Stocks › DGX vs NVDA
Quest Diagnostics Incorporated (DGX) vs NVIDIA Corporation (NVDA)
DGX
Quest Diagnostics Incorporated
$192.67
VS
NVDA
NVIDIA Corporation
$198.45
Rewards
DGX
NVDA
- ★NVIDIA Corporation has maintained ROIC above 10% for 4 consecutive years, suggesting solid business economics.
- ★Gross margin of 71.1% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
- ★Free cash flow has grown at a 193.9% CAGR over the past 4 years, demonstrating strong earnings power growth.
Risks
DGX
- ⚠Each dollar of retained earnings has produced only $0.30 of earning power — shareholders may have been better served by dividends.
- ⚠FCF yield of 6.4% suggests reasonable valuation assuming continued moderate growth.
- ⚠Insiders have sold $10.7M worth of stock in the past 3 months — significant insider liquidation.
NVDA
- ⚠FCF yield of 2.0% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠Beneish M-Score of -1.06 flags financial patterns consistent with potential earnings manipulation — warrants further investigation.
- ⚠Insiders have sold $4.9M worth of stock in the past 3 months — significant insider liquidation.
Key Valuation Metrics
Learn more →DGX
NVDA
Valuation
$1.36B
Free Cash Flow
$96.68B
6.37%
FCF Yield
2.00%
21.27
Trailing P/E
40.50
16.53
Forward P/E
17.66
Quality & Moat
8.94%
ROIC
65.75%
12.81%
ROE
76.33%
33.28%
Gross Margin
71.07%
1.37
PEG Ratio
0.42
Balance Sheet Safety
0.83
Debt / Equity
0.07
N/A
Interest Coverage
N/A
2.70
Net Debt / EBITDA
-0.38
1.79%
Dividend Yield
0.02%
DGX: 4Ties: 1NVDA: 7
DGXNVDA
Historical Fundamentals
Learn more →DGX
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
NVDA
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
$1 Retained Earnings Test
Learn more →DGX
$1.03
created per $1 retained over 3 years
Value Creator
Σ Retained
$1.72B
Δ Market Cap
+$1.77B
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
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
NVDA
$16.33
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$220.50B
Δ Market Cap
+$3.60T
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
> $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 →DGX
33.1% Overvalued
Price is 33.1% above estimated fair value
Current Price: $192.67
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $144.72
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
NVDA
45.1% Margin of Safety
Price is 45.1% below estimated fair value
Current Price: $198.45
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $361.26
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Reverse DCF — Market-Implied Growth
Learn more →DGX
What growth rate is the market pricing in at $193?
+12.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +7.8%
The market implies +12.1% Owner Earnings growth, above historical trends.
Standard FCF implies a demanding +7.8%, reflecting heavy growth investment.
NVDA
What growth rate is the market pricing in at $198?
+17.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +20.0%
The market implies +17.1% Owner Earnings growth, below historical trends — potential opportunity.
Standard FCF implies a more demanding +20.0%, reflecting heavy growth investment expected to generate future returns.
Economic Moat Score
Learn more →DGX
56/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None
Narrow moat with margin stability as the key competitive advantage. Improving roic consistency would strengthen the moat.
Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.
NVDA
69/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None
Narrow moat with roic consistency as the key competitive advantage. Improving revenue predictability would strengthen the moat.
Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.
Forensic Accounting
Learn more →DGX
-2.66
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone
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.
NVDA
-1.06
Likely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone
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.
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 →DGX
Insiders 0.4%Institutions 99.5%Retail & Other 0.1%
No. of Institutional Holders1,444
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
NVDA
Insiders 4.2%Institutions 68.1%Retail & Other 27.7%
No. of Institutional Holders7,393
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
High insider ownership aligns management incentives with shareholders. Institutional concentration can indicate smart-money conviction but also crowding risk.
Insider Buying Activity
Learn more →DGX
4
Buys (3M)
14
Buys (12M)
Total value (12M): $79,709
PLEWMAN PATRICK
Officer
$9,540
@ $194.69 · 2026-04-20
LASSITER WRIGHT III
Director
$1,168
@ $194.67 · 2026-04-20
KUPPUSAMY KARTHIK
Officer
$7,593
@ $194.69 · 2026-04-20
DELANEY MARK E
Officer
$7,204
@ $194.70 · 2026-04-20
GREGG VICKY B
Director
$12,295
@ $183.51 · 2026-01-28
LASSITER WRIGHT III
Director
$1,285
@ $183.57 · 2026-01-28
KUPPUSAMY KARTHIK
Officer
$2,936
@ $183.50 · 2026-01-28
DELANEY MARK E
Officer
$2,753
@ $183.53 · 2026-01-28
CARTER ROBERT B
Director
$1,101
@ $183.50 · 2026-01-28
GREGG VICKY B
Director
$13,232
@ $167.49 · 2025-07-21
SAMAD SAMER ABDUL
Chief Financial Officer
$12,060
@ $167.50 · 2025-07-21
LASSITER WRIGHT III
Director
$1,173
@ $167.57 · 2025-07-21
KUPPUSAMY KARTHIK
Officer
$4,522
@ $167.48 · 2025-07-21
DELANEY MARK E
Officer
$2,847
@ $167.47 · 2025-07-21
PLEWMAN PATRICK
Officer
$13,318
@ $164.42 · 2025-04-21
SAMAD SAMER ABDUL
Chief Financial Officer
$12,167
@ $164.42 · 2025-04-21
KUPPUSAMY KARTHIK
Officer
$4,439
@ $164.41 · 2025-04-21
DELANEY MARK E
Officer
$4,111
@ $164.44 · 2025-04-21
PLEWMAN PATRICK
Officer
$9,008
@ $158.04 · 2025-01-29
GREGG VICKY B
Director
$11,379
@ $158.04 · 2025-01-29
SAMAD SAMER ABDUL
Chief Financial Officer
$5,531
@ $158.03 · 2025-01-29
KUPPUSAMY KARTHIK
Officer
$1,896
@ $158.00 · 2025-01-29
DELANEY MARK E
Officer
$632.00
@ $158.00 · 2025-01-29
GREGG VICKY B
Director
$11,352
@ $149.37 · 2024-10-21
SAMAD SAMER ABDUL
Chief Financial Officer
$5,527
@ $149.38 · 2024-10-21
KUPPUSAMY KARTHIK
Officer
$3,137
@ $149.38 · 2024-10-21
DELANEY MARK E
Officer
$598.00
@ $149.50 · 2024-10-21
PLEWMAN PATRICK
Officer
$8,962
@ $149.37 · 2024-10-21
GREGG VICKY B
Director
$11,317
@ $146.97 · 2024-07-22
SAMAD SAMER ABDUL
Chief Financial Officer
$3,086
@ $146.95 · 2024-07-22
KUPPUSAMY KARTHIK
Officer
$4,556
@ $146.97 · 2024-07-22
DELANEY MARK E
Officer
$882.00
@ $147.00 · 2024-07-22
PLEWMAN PATRICK
Officer
$8,818
@ $146.97 · 2024-07-22
Open market purchases · includes direct & indirect ownership · excludes option exercises
NVDA
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
Open market purchases · includes direct & indirect ownership · excludes option exercises.
Insider Selling Activity
Learn more →DGX
12
Sells (3M)
24
Sells (12M)
Total value (12M): $33.21M
DOHERTY CATHERINE T
Officer
$1.15M
@ $206.21 · 2026-03-05
PLEWMAN PATRICK
Officer
$588,730
@ $206.21 · 2026-03-05
PREVOZNIK MICHAEL E
General Counsel
$799,682
@ $206.21 · 2026-03-05
KUPPUSAMY KARTHIK
Officer
$538,372
@ $204.86 · 2026-03-04
DOHERTY CATHERINE T
Officer
$131,285
@ $207.73 · 2026-03-03
PLEWMAN PATRICK
Officer
$85,169
@ $207.73 · 2026-03-03
PREVOZNIK MICHAEL E
General Counsel
$109,266
@ $207.73 · 2026-03-03
DOHERTY CATHERINE T
Officer
$293,521
@ $204.83 · 2026-02-19
PLEWMAN PATRICK
Officer
$196,227
@ $204.83 · 2026-02-19
PREVOZNIK MICHAEL E
General Counsel
$227,566
@ $204.83 · 2026-02-19
DOHERTY CATHERINE T
Officer
$5.39M
@ $206.15 · 2026-02-13
PLEWMAN PATRICK
Officer
$1.16M
@ $204.00 · 2026-02-10
GREGG VICKY B
Director
$239,700
@ $191.76 · 2025-11-25
DAVIS J E CAUSEY
Chief Executive Officer
$10.59M
@ $192.22 · 2025-11-25
DELANEY MARK E
Officer
$1.49M
@ $187.35 · 2025-11-18
PFEIFFER GARY M
Director
$270,317
@ $182.40 · 2025-10-22
PREVOZNIK MICHAEL E
General Counsel
$42,706
@ $188.13 · 2025-09-26
PREVOZNIK MICHAEL E
General Counsel
$5.33M
@ $187.12 · 2025-09-24
PLEWMAN PATRICK
Officer
$365,375
@ $185.00 · 2025-08-21
PLEWMAN PATRICK
Officer
$829,356
@ $183.00 · 2025-08-19
PLEWMAN PATRICK
Officer
$355,500
@ $180.00 · 2025-08-15
PLEWMAN PATRICK
Officer
$968,625
@ $175.00 · 2025-08-06
KUPPUSAMY KARTHIK
Officer
$1.76M
@ $167.95 · 2025-07-31
DELANEY MARK E
Officer
$306,800
@ $175.51 · 2025-05-13
KUPPUSAMY KARTHIK
Officer
$434,350
@ $170.00 · 2025-04-02
DAVIS JAMES E
Chief Executive Officer
$6.60M
@ $168.46 · 2025-04-02
PREVOZNIK MICHAEL E
General Counsel
$789,310
@ $170.00 · 2025-03-17
DOHERTY CATHERINE T
Officer
$935,078
@ $174.13 · 2025-03-05
DOHERTY CATHERINE T
Officer
$125,866
@ $175.79 · 2025-03-04
PREVOZNIK MICHAEL E
General Counsel
$104,068
@ $175.79 · 2025-03-04
DOHERTY CATHERINE T
Officer
$142,231
@ $172.61 · 2025-02-27
PREVOZNIK MICHAEL E
General Counsel
$91,138
@ $172.61 · 2025-02-27
DOHERTY CATHERINE T
Officer
$244,515
@ $170.51 · 2025-02-20
PREVOZNIK MICHAEL E
General Counsel
$103,278
@ $170.99 · 2025-02-20
PLEWMAN PATRICK
Officer
$54,307
@ $169.71 · 2025-02-19
GREGG VICKY B
Director
$205,710
@ $164.57 · 2025-02-05
DELANEY MARK E
Officer
$66,214
@ $164.30 · 2025-02-05
PREVOZNIK MICHAEL E
General Counsel
$5.73M
@ $163.07 · 2024-11-29
DOHERTY CATHERINE T
Officer
$5.40M
@ $162.99 · 2024-11-27
DEPPE MICHAEL J
Officer
$2.89M
@ $154.05 · 2024-11-06
KUPPUSAMY KARTHIK
Officer
$278,525
@ $156.92 · 2024-10-28
PREVOZNIK MICHAEL E
General Counsel
$5.04M
@ $154.97 · 2024-08-29
KUPPUSAMY KARTHIK
Officer
$304,990
@ $153.26 · 2024-08-28
DELANEY MARK E
Officer
$60,094
@ $143.08 · 2024-07-24
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
NVDA
3
Sells (3M)
40
Sells (12M)
Total value (12M): $1.10B
ROBERTSON DONALD F JR
Officer
$942,944
@ $174.75 · 2026-03-20
SHAH AARTI S
Director
$3.36M
@ $176.71 · 2026-03-19
DABIRI JOHN O
Director
$555,440
@ $184.90 · 2026-03-13
ROBERTSON DONALD F JR
Officer
$15.19M
@ $189.85 · 2026-01-02
ROBERTSON DONALD F JR
Officer
$4.43M
@ $179.98 · 2025-12-19
DABIRI JOHN O
Director
$112,317
@ $179.42 · 2025-11-24
HUANG JEN-HSUN
Chief Executive Officer
$5.20M
@ $207.91 · 2025-10-29
HUANG JEN-HSUN
Chief Executive Officer
$23.56M
@ $188.47 · 2025-10-28
HUANG JEN-HSUN
Chief Executive Officer
$40.73M
@ $181.04 · 2025-10-23
HUANG JEN-HSUN
Chief Executive Officer
$41.06M
@ $182.48 · 2025-10-20
HUANG JEN-HSUN
Chief Executive Officer
$41.34M
@ $183.73 · 2025-10-15
HUANG JEN-HSUN
Chief Executive Officer
$42.89M
@ $190.60 · 2025-10-10
HUANG JEN-HSUN
Chief Executive Officer
$42.05M
@ $186.89 · 2025-10-07
HUANG JEN-HSUN
Chief Executive Officer
$42.09M
@ $187.08 · 2025-10-02
HUANG JEN-HSUN
Chief Executive Officer
$40.23M
@ $178.82 · 2025-09-29
HUANG JEN-HSUN
Chief Executive Officer
$40.21M
@ $178.69 · 2025-09-24
ROBERTSON DONALD F JR
Officer
$617,298
@ $176.37 · 2025-09-19
HUANG JEN-HSUN
Chief Executive Officer
$39.18M
@ $174.14 · 2025-09-19
HUANG JEN-HSUN
Chief Executive Officer
$39.75M
@ $176.66 · 2025-09-16
HUANG JEN-HSUN
Chief Executive Officer
$39.28M
@ $174.59 · 2025-09-11
HUANG JEN-HSUN
Chief Executive Officer
$38.01M
@ $168.95 · 2025-09-08
HUANG JEN-HSUN
Chief Executive Officer
$38.61M
@ $171.60 · 2025-09-03
HUDSON BEACH DAWN E
Director
$15.38M
@ $170.90 · 2025-09-03
HUANG JEN-HSUN
Chief Executive Officer
$27.12M
@ $180.79 · 2025-08-15
HUANG JEN-HSUN
Chief Executive Officer
$40.96M
@ $182.04 · 2025-08-13
HUANG JEN-HSUN
Chief Executive Officer
$40.66M
@ $180.70 · 2025-08-08
HUANG JEN-HSUN
Chief Executive Officer
$39.78M
@ $176.80 · 2025-08-05
HUANG JEN-HSUN
Chief Executive Officer
$40.18M
@ $178.58 · 2025-07-31
HUANG JEN-HSUN
Chief Executive Officer
$39.16M
@ $174.02 · 2025-07-28
HUANG JEN-HSUN
Chief Executive Officer
$38.22M
@ $169.87 · 2025-07-23
HUANG JEN-HSUN
Chief Executive Officer
$38.71M
@ $172.05 · 2025-07-18
HUANG JEN-HSUN
Chief Executive Officer
$37.59M
@ $167.08 · 2025-07-15
HUANG JEN-HSUN
Chief Executive Officer
$36.43M
@ $161.91 · 2025-07-10
HUANG JEN-HSUN
Chief Executive Officer
$35.55M
@ $158.02 · 2025-07-07
HUANG JEN-HSUN
Chief Executive Officer
$35.16M
@ $156.27 · 2025-07-01
HUANG JEN-HSUN
Chief Executive Officer
$30.47M
@ $152.33 · 2025-06-26
HUANG JEN-HSUN
Chief Executive Officer
$14.40M
@ $144.04 · 2025-06-23
ROBERTSON DONALD F JR
Officer
$646,469
@ $143.66 · 2025-06-20
DABIRI JOHN O
Director
$91,608
@ $138.80 · 2025-05-30
BURGESS ROBERT KENNETH
Director
$6.74M
@ $134.82 · 2025-05-30
ROBERTSON DONALD F JR
Officer
$525,585
@ $116.80 · 2025-03-21
KRESS COLETTE M.
Chief Financial Officer
$7.79M
@ $116.83 · 2025-03-21
SHAH AARTI S
Director
$2.37M
@ $118.42 · 2025-03-20
BURGESS ROBERT KENNETH
Director
$6.16M
@ $115.49 · 2025-03-13
DABIRI JOHN O
Director
$292,930
@ $110.00 · 2025-03-10
ROBERTSON DONALD F JR
Officer
$608,775
@ $135.28 · 2024-12-13
KRESS COLETTE M.
Chief Financial Officer
$9.03M
@ $135.40 · 2024-12-13
DABIRI JOHN O
Director
$101,672
@ $142.00 · 2024-11-25
ROBERTSON DONALD F JR
Officer
$524,293
@ $116.51 · 2024-09-20
KRESS COLETTE M.
Chief Financial Officer
$7.77M
@ $116.59 · 2024-09-20
HUANG JEN-HSUN
Chief Executive Officer
$28.55M
@ $118.97 · 2024-09-13
HUANG JEN-HSUN
Chief Executive Officer
$26.25M
@ $109.39 · 2024-09-11
HUANG JEN-HSUN
Chief Executive Officer
$25.04M
@ $104.35 · 2024-09-09
HUANG JEN-HSUN
Chief Executive Officer
$25.81M
@ $107.52 · 2024-09-05
HUANG JEN-HSUN
Chief Executive Officer
$27.57M
@ $114.90 · 2024-09-03
HUANG JEN-HSUN
Chief Executive Officer
$24.92M
@ $103.82 · 2024-08-09
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives.
🎭 Mr. Market's Mood
Learn more →DGX
😐Neutral(55/100)
"Market is pricing this stock without strong emotion in either direction"
Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
NVDA
😏Greed(62/100)
"Market is optimistic — be cautious and ensure you have a margin of safety"
Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
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 →DGX
⚪Awaiting DCF Data
The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.
DCF Margin of Safety: N/AMr. Market's Mood: Neutral (55)
NVDA
⚪Awaiting DCF Data
The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.
DCF Margin of Safety: N/AMr. Market's Mood: Greed (62)