Compare Stocks › DGX vs NOW
Quest Diagnostics Incorporated (DGX) vs ServiceNow, Inc. (NOW)
DGX
Quest Diagnostics Incorporated
$194.16
VS
NOW
ServiceNow, Inc.
$113.27
Rewards
DGX
- ★Each dollar of retained earnings has created $1.03 of market value — management is creating shareholder value.
NOW
- ★Gross margin of 77.5% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
- ★Free cash flow has grown at a 27.8% CAGR over the past 4 years, demonstrating strong earnings power growth.
- ★Each dollar of retained earnings has created $16.65 of market value — management is an exceptional capital allocator.
Risks
DGX
- ⚠FCF yield of 6.3% suggests reasonable valuation assuming continued moderate growth.
- ⚠PEG ratio of 2.01 indicates the stock is expensive relative to its expected growth — the market may be pricing in more growth than analysts project.
- ⚠Insiders have sold $10.7M worth of stock in the past 3 months — significant insider liquidation.
NOW
- ⚠Despite buyback spending, shares outstanding increased in 3 out of 3 years — stock-based compensation is offsetting repurchases.
- ⚠PEG ratio of 19.95 indicates the stock is expensive relative to its expected growth — the market may be pricing in more growth than analysts project.
Key Valuation Metrics
Learn more →DGX
NOW
Valuation
$1.36B
Free Cash Flow
$4.95B
6.29%
FCF Yield
4.14%
22.16
Trailing P/E
67.83
16.91
Forward P/E
22.56
Quality & Moat
8.78%
ROIC
11.27%
13.62%
ROE
13.48%
33.33%
Gross Margin
77.53%
2.01
PEG Ratio
19.95
Balance Sheet Safety
0.90
Debt / Equity
0.19
N/A
Interest Coverage
N/A
2.83
Net Debt / EBITDA
-1.42
1.77%
Dividend Yield
N/A
DGX: 4Ties: 2NOW: 5
DGXNOW
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.
NOW
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
NOW
$16.65
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$4.90B
Δ Market Cap
+$81.66B
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
40.6% Overvalued
Price is 40.6% above estimated fair value
Current Price: $194.16
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $138.07
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
NOW
45.8% Overvalued
Price is 45.8% above estimated fair value
Current Price: $113.27
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $77.67
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 $194?
+12.3%
Market-Implied Owner Earnings Growth
Standard FCF implies +8.0%
The market implies +12.3% Owner Earnings growth, above historical trends.
Standard FCF implies a demanding +8.0%, reflecting heavy growth investment.
NOW
What growth rate is the market pricing in at $113?
+24.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +9.8%
The market implies +24.1% Owner Earnings growth, below historical trends — potential opportunity.
Standard FCF implies a more demanding +9.8%, 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.
NOW
61/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None
Narrow moat with revenue predictability 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 5 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.
NOW
-2.87
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.
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 100.0%
No. of Institutional Holders1,438
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.
NOW
Insiders 0.2%Institutions 90.0%Retail & Other 9.8%
No. of Institutional Holders3,197
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
5
Buys (3M)
14
Buys (12M)
Total value (12M): $88,239
CARTER ROBERT B
Director
$1,101
@ $183.50 · 2026-01-28
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
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
PLEWMAN PATRICK
Officer
$8,962
@ $149.37 · 2024-10-21
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
$8,818
@ $146.97 · 2024-07-22
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
Open market purchases · includes direct & indirect ownership · excludes option exercises
NOW
1
Buys (3M)
1
Buys (12M)
Total value (12M): $3.00M
MCDERMOTT WILLIAM R
Chief Executive Officer
$3.00M
@ $104.60 · 2026-02-27
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)
26
Sells (12M)
Total value (12M): $40.24M
PREVOZNIK MICHAEL E
General Counsel
$799,682
@ $206.21 · 2026-03-05
PLEWMAN PATRICK
Officer
$588,730
@ $206.21 · 2026-03-05
DOHERTY CATHERINE T
Officer
$1.15M
@ $206.21 · 2026-03-05
KUPPUSAMY KARTHIK
Officer
$538,372
@ $204.86 · 2026-03-04
PREVOZNIK MICHAEL E
General Counsel
$109,266
@ $207.73 · 2026-03-03
PLEWMAN PATRICK
Officer
$85,169
@ $207.73 · 2026-03-03
DOHERTY CATHERINE T
Officer
$131,285
@ $207.73 · 2026-03-03
PREVOZNIK MICHAEL E
General Counsel
$227,566
@ $204.83 · 2026-02-19
PLEWMAN PATRICK
Officer
$196,227
@ $204.83 · 2026-02-19
DOHERTY CATHERINE T
Officer
$293,521
@ $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
DAVIS J E CAUSEY
Chief Executive Officer
$10.59M
@ $192.22 · 2025-11-25
GREGG VICKY B
Director
$239,700
@ $191.76 · 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
PREVOZNIK MICHAEL E
General Counsel
$104,068
@ $175.79 · 2025-03-04
DOHERTY CATHERINE T
Officer
$125,866
@ $175.79 · 2025-03-04
PREVOZNIK MICHAEL E
General Counsel
$91,138
@ $172.61 · 2025-02-27
DOHERTY CATHERINE T
Officer
$142,231
@ $172.61 · 2025-02-27
PREVOZNIK MICHAEL E
General Counsel
$103,278
@ $170.99 · 2025-02-20
DOHERTY CATHERINE T
Officer
$244,515
@ $170.51 · 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
KUPPUSAMY KARTHIK
Officer
$246,400
@ $140.00 · 2024-04-29
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
NOW
4
Sells (3M)
48
Sells (12M)
Total value (12M): $27.80M
FIPPS PAUL
Officer
$376,142
@ $101.77 · 2026-02-23
FIPPS PAUL
Officer
$1.02M
@ $105.93 · 2026-02-18
MCBRIDE KEVIN THOMAS
Officer
$147,994
@ $105.71 · 2026-02-13
CHAMBERLAIN PAUL EDWARD
Director
$151,755
@ $101.17 · 2026-02-12
MASTANTUONO GINA
President
$352,750
@ $850.00 · 2025-12-05
MASTANTUONO GINA
President
$336,936
@ $808.00 · 2025-11-28
JACKSON LAWRENCE
Director
$214,708
@ $810.22 · 2025-11-28
CHAMBERLAIN PAUL EDWARD
Director
$242,400
@ $808.00 · 2025-11-28
CANNEY JACQUELINE P
Officer
$200,549
@ $839.12 · 2025-11-18
FIPPS PAUL
Officer
$249,353
@ $817.55 · 2025-11-18
TZITZON NICHOLAS
Officer
$431,736
@ $827.08 · 2025-11-18
ELMER RUSSELL S.
General Counsel
$160,155
@ $838.51 · 2025-11-18
MCBRIDE KEVIN THOMAS
Officer
$235,894
@ $842.48 · 2025-11-14
CANNEY JACQUELINE P
Officer
$56,257
@ $852.38 · 2025-11-13
ELMER RUSSELL S.
General Counsel
$52,848
@ $852.39 · 2025-11-13
CANNEY JACQUELINE P
Officer
$222,012
@ $863.86 · 2025-11-10
ELMER RUSSELL S.
General Counsel
$164,997
@ $863.86 · 2025-11-10
SANDS ANITA M
Director
$1.00M
@ $915.11 · 2025-08-29
MCDERMOTT WILLIAM R
Chief Executive Officer
$5.34M
@ $916.63 · 2025-08-28
FIPPS PAUL
Officer
$1.30M
@ $895.32 · 2025-08-20
ELMER RUSSELL S.
General Counsel
$1.50M
@ $884.26 · 2025-08-20
MCDERMOTT WILLIAM R
Chief Executive Officer
$1.43M
@ $900.00 · 2025-08-19
CANNEY JACQUELINE P
Officer
$1.35M
@ $866.45 · 2025-08-18
MASTANTUONO GINA
President
$1.53M
@ $866.45 · 2025-08-18
TZITZON NICHOLAS
Officer
$1.49M
@ $866.45 · 2025-08-18
MCBRIDE KEVIN THOMAS
Officer
$238,496
@ $851.77 · 2025-08-15
CHAMBERLAIN PAUL EDWARD
Director
$258,000
@ $860.00 · 2025-08-14
CANNEY JACQUELINE P
Officer
$57,658
@ $860.57 · 2025-08-13
MASTANTUONO GINA
President
$72,288
@ $860.57 · 2025-08-13
CANNEY JACQUELINE P
Officer
$225,746
@ $878.39 · 2025-08-08
MASTANTUONO GINA
President
$256,490
@ $878.39 · 2025-08-08
JACKSON LAWRENCE
Director
$749,805
@ $990.50 · 2025-07-29
CANNEY JACQUELINE P
Officer
$341,631
@ $965.06 · 2025-07-16
SANDS ANITA M
Director
$250,950
@ $1050.00 · 2025-07-03
MCBRIDE KEVIN THOMAS
Officer
$283,310
@ $1011.82 · 2025-06-03
SANDS ANITA M
Director
$250,267
@ $1009.14 · 2025-06-02
CANNEY JACQUELINE P
Officer
$147,900
@ $1020.00 · 2025-05-30
TZITZON NICHOLAS
Officer
$1.19M
@ $1020.00 · 2025-05-30
MCDERMOTT WILLIAM R
Chief Executive Officer
$2.07M
@ $1012.01 · 2025-05-30
SANDS ANITA M
Director
$433,825
@ $1013.61 · 2025-05-27
BRIGGS TERESA
Director
$216,913
@ $1013.61 · 2025-05-27
LUDDY FREDERIC B
Director
$428,000
@ $1000.00 · 2025-05-23
MASTANTUONO GINA
President
$121,570
@ $1030.25 · 2025-05-19
CANNEY JACQUELINE P
Officer
$96,844
@ $1030.26 · 2025-05-19
ELMER RUSSELL S.
General Counsel
$83,450
@ $1030.25 · 2025-05-19
CHAMBERLAIN PAUL EDWARD
Director
$310,326
@ $1034.42 · 2025-05-15
MASTANTUONO GINA
President
$85,932
@ $1023.00 · 2025-05-13
CANNEY JACQUELINE P
Officer
$67,518
@ $1023.00 · 2025-05-13
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(50/100)
"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.
NOW
😨Fear(38/100)
"Market is pessimistic — investigate whether fears are temporary or structural"
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 (50)
NOW
⚪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: Fear (38)