Compare Stocks › AMZN vs MCK
Amazon.com, Inc. (AMZN) vs McKesson Corporation (MCK)
AMZN
Amazon.com, Inc.
$275.05
VS
MCK
McKesson Corporation
$812.54
Rewards
AMZN
- ★Each dollar of retained earnings has created $5.34 of earning power — management is an exceptional capital allocator.
- ★PEG ratio of 0.44 suggests the stock is undervalued relative to its growth rate — paying less than 1x for each unit of earnings growth.
- ★Altman Z-Score of 5.30 indicates very low bankruptcy risk — the company is firmly in the safe zone.
MCK
- ★McKesson Corporation has maintained ROIC above 15% for 4 consecutive years, indicating a durable competitive advantage.
- ★McKesson Corporation scores 82/100 on the Economic Moat Score (Wide Moat), with roic consistency as the strongest competitive dimension.
- ★Free cash flow has grown at a 10.3% CAGR over the past 4 years, demonstrating strong earnings power growth.
Risks
AMZN
- ⚠FCF yield of 0.3% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠13 insider sales totaling $29.0M with no purchases in the past 3 months — insiders are reducing their exposure.
MCK
- ⚠Gross margin of 3.5% is low, suggesting a competitive or commodity-like market with limited pricing power.
- ⚠5 insider sales totaling $3.8M with no purchases in the past 3 months — insiders are reducing their exposure.
Key Valuation Metrics
Learn more →AMZN
MCK
Valuation
$9.81B
Free Cash Flow
$9.16B
0.33%
FCF Yield
9.20%
32.86
Trailing P/E
23.43
27.93
Forward P/E
18.42
Quality & Moat
11.38%
ROIC
55.61%
17.58%
ROE
N/A
50.60%
Gross Margin
3.45%
0.44
PEG Ratio
0.62
Balance Sheet Safety
0.53
Debt / Equity
N/A
N/A
Interest Coverage
N/A
0.59
Net Debt / EBITDA
0.97
N/A
Dividend Yield
0.40%
AMZN: 4Ties: 1MCK: 4
AMZNMCK
Historical Fundamentals
Learn more →AMZN
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
MCK
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 →AMZN
$9.66
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$167.34B
Δ Market Cap
+$1.62T
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
MCK
$5.41
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$8.91B
Δ Market Cap
+$48.14B
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 →AMZN
24.4% Overvalued
Price is 24.4% above estimated fair value
Current Price: $275.05
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $221.02
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
MCK
9.7% Overvalued
Price is 9.7% above estimated fair value
Current Price: $812.54
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $740.41
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Reverse DCF — Market-Implied Growth
Learn more →AMZN
What growth rate is the market pricing in at $275?
+16.9%
Market-Implied Owner Earnings Growth
Standard FCF implies +46.7%
The market implies +16.9% Owner Earnings growth, below historical trends — potential opportunity.
Standard FCF implies a more demanding +46.7%, reflecting heavy growth investment expected to generate future returns.
MCK
What growth rate is the market pricing in at $813?
+14.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +0.1%
The market implies +14.1% Owner Earnings growth, below historical trends — potential opportunity.
Standard FCF implies a more demanding +0.1%, reflecting heavy growth investment expected to generate future returns.
Economic Moat Score
Learn more →AMZN
51/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None
Narrow moat with revenue predictability as the key competitive advantage. Improving margin stability 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.
MCK
82/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None
Wide moat driven primarily by roic consistency. Margin Stability is the area most vulnerable to competitive pressure.
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 →AMZN
-2.58
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.
MCK
-2.43
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 →AMZN
Insiders 8.9%Institutions 67.0%Retail & Other 24.0%
No. of Institutional Holders7,647
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.
MCK
Insiders 0.1%Institutions 91.7%Retail & Other 8.2%
No. of Institutional Holders2,651
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 →AMZN
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
MCK
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 →AMZN
13
Sells (3M)
51
Sells (12M)
Total value (12M): $5.75B
RUBINSTEIN JONATHAN J
Director
$1.00M
@ $260.00 · 2026-04-24
JASSY ANDREW R.
Chief Executive Officer
$7.91M
@ $255.00 · 2026-04-17
HERRINGTON DOUGLAS J
Officer
$5.02M
@ $245.00 · 2026-04-14
HERRINGTON DOUGLAS J
Officer
$210,500
@ $210.50 · 2026-04-01
HERRINGTON DOUGLAS J
Officer
$204,250
@ $204.25 · 2026-03-02
ZAPOLSKY DAVID A.
Officer
$3.65M
@ $205.40 · 2026-02-24
HERRINGTON DOUGLAS J
Officer
$1.41M
@ $205.82 · 2026-02-23
GARMAN MATTHEW S
Officer
$3.64M
@ $205.22 · 2026-02-23
JASSY ANDREW R.
Chief Executive Officer
$4.08M
@ $205.18 · 2026-02-23
REYNOLDS SHELLEY L
Officer
$554,892
@ $205.90 · 2026-02-23
HERRINGTON DOUGLAS J
Officer
$948,990
@ $198.37 · 2026-02-17
ALEXANDER KEITH BRIAN
Director
$183,492
@ $203.88 · 2026-02-12
HERRINGTON DOUGLAS J
Officer
$208,000
@ $208.00 · 2026-02-11
HERRINGTON DOUGLAS J
Officer
$583,050
@ $233.22 · 2025-12-01
ZAPOLSKY DAVID A.
Officer
$4.56M
@ $220.58 · 2025-11-24
HERRINGTON DOUGLAS J
Officer
$1.48M
@ $216.40 · 2025-11-21
GARMAN MATTHEW S
Officer
$3.85M
@ $216.90 · 2025-11-21
JASSY ANDREW R.
Chief Executive Officer
$4.31M
@ $216.94 · 2025-11-21
REYNOLDS SHELLEY L
Officer
$583,222
@ $216.41 · 2025-11-21
HUTTENLOCHER DANIEL P
Director
$280,317
@ $226.61 · 2025-11-20
HERRINGTON DOUGLAS J
Officer
$1.11M
@ $232.71 · 2025-11-17
ALEXANDER KEITH BRIAN
Director
$209,700
@ $233.00 · 2025-11-17
HERRINGTON DOUGLAS J
Officer
$6.14M
@ $250.58 · 2025-11-03
RUBINSTEIN JONATHAN J
Director
$2.04M
@ $250.03 · 2025-10-31
HERRINGTON DOUGLAS J
Officer
$542,750
@ $217.10 · 2025-10-01
HERRINGTON DOUGLAS J
Officer
$558,725
@ $223.49 · 2025-09-02
ZAPOLSKY DAVID A.
Officer
$4.60M
@ $222.34 · 2025-08-22
HERRINGTON DOUGLAS J
Officer
$1.51M
@ $221.62 · 2025-08-21
GARMAN MATTHEW S
Officer
$3.94M
@ $221.57 · 2025-08-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$3.95M
@ $222.74 · 2025-08-21
JASSY ANDREW R.
Chief Executive Officer
$4.40M
@ $221.58 · 2025-08-21
REYNOLDS SHELLEY L
Officer
$601,755
@ $221.64 · 2025-08-21
HERRINGTON DOUGLAS J
Officer
$1.11M
@ $232.32 · 2025-08-15
HERRINGTON DOUGLAS J
Officer
$542,500
@ $217.00 · 2025-08-01
BEZOS JEFFREY P
Officer and Director
$954.28M
@ $229.72 · 2025-07-24
BEZOS JEFFREY P
Officer and Director
$1.51B
@ $228.34 · 2025-07-22
BEZOS JEFFREY P
Officer and Director
$166.45M
@ $227.02 · 2025-07-15
BEZOS JEFFREY P
Officer and Director
$1.51B
@ $225.21 · 2025-07-14
BEZOS JEFFREY P
Officer and Director
$108.68M
@ $223.99 · 2025-07-09
BEZOS JEFFREY P
Officer and Director
$665.86M
@ $223.86 · 2025-07-07
HERRINGTON DOUGLAS J
Officer
$550,144
@ $220.06 · 2025-07-01
BEZOS JEFFREY P
Officer and Director
$736.68M
@ $221.56 · 2025-06-30
HERRINGTON DOUGLAS J
Officer
$512,450
@ $204.98 · 2025-06-02
ZAPOLSKY DAVID A.
Officer
$4.18M
@ $202.00 · 2025-05-22
HERRINGTON DOUGLAS J
Chief Executive Officer
$1.37M
@ $200.77 · 2025-05-21
GARMAN MATTHEW S
Chief Executive Officer
$4.21M
@ $201.30 · 2025-05-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$3.58M
@ $201.57 · 2025-05-21
JASSY ANDREW R.
Chief Executive Officer
$4.00M
@ $201.30 · 2025-05-21
REYNOLDS SHELLEY L
Officer
$541,129
@ $200.79 · 2025-05-21
HERRINGTON DOUGLAS J
Chief Executive Officer
$980,971
@ $205.05 · 2025-05-15
ALEXANDER KEITH BRIAN
Director
$210,680
@ $210.68 · 2025-05-12
HERRINGTON DOUGLAS J
Officer
$476,675
@ $190.67 · 2025-05-01
HERRINGTON DOUGLAS J
Officer
$469,975
@ $187.99 · 2025-04-01
HERRINGTON DOUGLAS J
Chief Executive Officer
$532,925
@ $213.17 · 2025-03-03
ZAPOLSKY DAVID A.
Officer
$5.47M
@ $218.25 · 2025-02-24
HERRINGTON DOUGLAS J
Officer
$1.36M
@ $222.47 · 2025-02-21
GARMAN MATTHEW S
Officer
$3.36M
@ $220.69 · 2025-02-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$3.26M
@ $223.14 · 2025-02-21
JASSY ANDREW R.
Chief Executive Officer
$4.59M
@ $220.65 · 2025-02-21
REYNOLDS SHELLEY L
Officer
$1.97M
@ $222.47 · 2025-02-21
HERRINGTON DOUGLAS J
Officer
$1.26M
@ $228.44 · 2025-02-18
HERRINGTON DOUGLAS J
Officer
$6.33M
@ $230.27 · 2025-02-12
RUBINSTEIN JONATHAN J
Director
$1.00M
@ $229.85 · 2024-12-09
RUBINSTEIN JONATHAN J
Director
$1.00M
@ $219.85 · 2024-12-04
HERRINGTON DOUGLAS J
Officer
$735,000
@ $210.00 · 2024-12-02
HERRINGTON DOUGLAS J
Officer
$1.22M
@ $200.19 · 2024-11-21
GARMAN MATTHEW S
Chief Executive Officer
$3.05M
@ $200.19 · 2024-11-21
ZAPOLSKY DAVID A.
Officer
$2.34M
@ $200.23 · 2024-11-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$2.96M
@ $202.88 · 2024-11-21
JASSY ANDREW R.
Chief Executive Officer
$4.16M
@ $200.17 · 2024-11-21
REYNOLDS SHELLEY L
Officer
$759,090
@ $200.23 · 2024-11-21
HUTTENLOCHER DANIEL P
Director
$246,237
@ $199.06 · 2024-11-19
HERRINGTON DOUGLAS J
Officer
$1.13M
@ $205.81 · 2024-11-15
BEZOS JEFFREY P
Officer and Director
$686.52M
@ $207.99 · 2024-11-13
BEZOS JEFFREY P
Officer, Director and Beneficial Owner
$1.25B
@ $207.80 · 2024-11-11
BEZOS JEFFREY P
Officer, Director and Beneficial Owner
$1.23B
@ $205.48 · 2024-11-07
RUBINSTEIN JONATHAN J
Director
$1.00M
@ $209.85 · 2024-11-07
ALEXANDER KEITH BRIAN
Director
$176,733
@ $196.37 · 2024-11-04
BEZOS JEFFREY P
Officer, Director and Beneficial Owner
$213.76M
@ $200.07 · 2024-11-01
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
MCK
5
Sells (3M)
23
Sells (12M)
Total value (12M): $59.73M
LAU MICHELE
Officer
$2.70M
@ $990.00 · 2026-03-02
MARTINEZ MARIA N.
Director
$328,013
@ $939.87 · 2026-02-19
SMITH LEANN B
Officer
$179,550
@ $945.00 · 2026-02-17
LAU MICHELE
Officer
$282,817
@ $933.39 · 2026-02-11
RUTLEDGE NAPOLEON B JR
Officer
$313,240
@ $955.00 · 2026-02-06
RODGERS THOMAS L
Officer
$225,266
@ $816.18 · 2026-01-05
RUTLEDGE NAPOLEON B JR
Officer
$283,476
@ $861.63 · 2025-11-07
TYLER BRIAN SCOTT
Chief Executive Officer
$8.42M
@ $705.63 · 2025-08-22
TYLER BRIAN SCOTT
Chief Executive Officer
$8.09M
@ $677.76 · 2025-08-15
RUTLEDGE NAPOLEON B JR
Officer
$218,347
@ $663.67 · 2025-08-08
TYLER BRIAN SCOTT
Chief Executive Officer
$13.72M
@ $708.09 · 2025-07-11
TYLER BRIAN SCOTT
Chief Executive Officer
$13.67M
@ $705.93 · 2025-06-06
RODGERS THOMAS L
Officer
$2.06M
@ $712.18 · 2025-05-30
VITALONE BRITT J
Chief Financial Officer
$1.35M
@ $717.91 · 2025-05-28
RODGERS THOMAS L
Officer
$366,134
@ $717.91 · 2025-05-28
RUTLEDGE NAPOLEON B JR
Officer
$68,201
@ $717.91 · 2025-05-28
SMITH LEANN B
Officer
$244,807
@ $717.91 · 2025-05-28
RUTLEDGE NAPOLEON B JR
Officer
$749,360
@ $714.36 · 2025-05-27
VITALONE BRITT J
Chief Financial Officer
$523,556
@ $715.24 · 2025-05-23
SMITH LEANN B
Officer
$115,154
@ $715.24 · 2025-05-23
VITALONE BRITT J
Chief Financial Officer
$4.54M
@ $717.30 · 2025-05-22
SMITH LEANN B
Officer
$895,190
@ $717.30 · 2025-05-22
RUTLEDGE NAPOLEON B JR
Officer
$394,495
@ $726.51 · 2025-05-19
TYLER BRIAN SCOTT
Chief Executive Officer
$5.68M
@ $634.24 · 2025-03-06
TYLER BRIAN SCOTT
Chief Executive Officer
$5.59M
@ $624.00 · 2025-02-28
LAU MICHELE
Officer
$188,760
@ $605.00 · 2025-02-25
TYLER BRIAN SCOTT
Chief Executive Officer
$5.36M
@ $597.99 · 2025-02-21
TYLER BRIAN SCOTT
Chief Executive Officer
$5.38M
@ $600.66 · 2025-02-14
SMITH LEANN B
Officer
$114,603
@ $609.59 · 2025-02-12
SMITH LEANN B
Officer
$331,645
@ $572.79 · 2025-01-02
SMITH LEANN B
Officer
$349,027
@ $602.81 · 2024-12-09
TYLER BRIAN SCOTT
Chief Executive Officer
$2.11M
@ $561.10 · 2024-09-05
TYLER BRIAN SCOTT
Chief Executive Officer
$2.35M
@ $626.03 · 2024-08-05
TYLER BRIAN SCOTT
Chief Executive Officer
$2.18M
@ $580.92 · 2024-07-03
SMITH LEANN B
Officer
$351,318
@ $585.53 · 2024-06-11
MARTINEZ MARIA N.
Director
$282,979
@ $585.88 · 2024-06-07
TYLER BRIAN SCOTT
Chief Executive Officer
$2.16M
@ $574.41 · 2024-06-05
RODGERS THOMAS L
Officer
$2.94M
@ $560.99 · 2024-05-31
VITALONE BRITT J
Chief Financial Officer
$1.83M
@ $551.99 · 2024-05-29
RODGERS THOMAS L
Officer
$512,939
@ $556.33 · 2024-05-29
SMITH LEANN B
Officer
$225,924
@ $553.74 · 2024-05-29
VITALONE BRITT J
Chief Financial Officer
$7.12M
@ $558.09 · 2024-05-23
SMITH LEANN B
Officer
$392,895
@ $558.09 · 2024-05-23
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 →AMZN
😏Greed(74/100)
"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.
MCK
😐Neutral(45/100)
"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.
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 →AMZN
⚪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 (74)
MCK
⚪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 (45)