Compare Stocks › AMZN vs FIX
Amazon.com, Inc. (AMZN) vs Comfort Systems USA, Inc. (FIX)
AMZN
Amazon.com, Inc.
$208.76
VS
FIX
Comfort Systems USA, Inc.
$1444.60
Rewards
AMZN
- ★Each dollar of retained earnings has created $9.66 of market value — management is an exceptional capital allocator.
- ★Trailing P/E of 29.2x is 28% below the historical average of 40.6x — potentially undervalued relative to its own history.
- ★Altman Z-Score of 5.30 indicates very low bankruptcy risk — the company is firmly in the safe zone.
FIX
- ★Comfort Systems USA, Inc. has maintained ROIC above 10% for 4 consecutive years, suggesting solid business economics.
- ★Comfort Systems USA, Inc. 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 59.7% CAGR over the past 4 years, demonstrating strong earnings power growth.
Risks
AMZN
- ⚠FCF yield of 1.1% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠PEG ratio of 5.83 indicates the stock is expensive relative to its expected growth — the market may be pricing in more growth than analysts project.
- ⚠9 insider sales totaling $14.9M with no purchases in the past 3 months — insiders are reducing their exposure.
FIX
- ⚠Gross margin of 24.1% is low, suggesting a competitive or commodity-like market with limited pricing power.
- ⚠FCF yield of 2.0% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠Trailing P/E of 50.0x is 98% above the historical average of 25.2x — the stock trades at a premium to its own history.
Key Valuation Metrics
Learn more →AMZN
FIX
Valuation
$23.79B
Free Cash Flow
$1.03B
1.06%
FCF Yield
2.02%
29.16
Trailing P/E
50.00
22.35
Forward P/E
32.61
Quality & Moat
10.12%
ROIC
39.51%
18.89%
ROE
41.76%
50.29%
Gross Margin
24.13%
5.83
PEG Ratio
0.39
Balance Sheet Safety
0.43
Debt / Equity
0.20
N/A
Interest Coverage
N/A
0.38
Net Debt / EBITDA
-0.37
N/A
Dividend Yield
0.16%
AMZN: 4Ties: 1FIX: 6
AMZNFIX
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.
FIX
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
FIX
$16.63
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$1.73B
Δ Market Cap
+$28.72B
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
36.4% Margin of Safety
Price is 36.4% below estimated fair value
Current Price: $208.76
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $328.47
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
FIX
9.8% Overvalued
Price is 9.8% above estimated fair value
Current Price: $1444.60
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $1315.72
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 $209?
+13.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +29.4%
The market implies +13.0% Owner Earnings growth, below historical trends — potential opportunity.
Standard FCF implies a more demanding +29.4%, reflecting heavy growth investment expected to generate future returns.
FIX
What growth rate is the market pricing in at $1445?
+20.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +19.9%
The market implies +20.0% Owner Earnings growth, below historical trends — potential opportunity.
Standard FCF implies a more demanding +19.9%, 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.
FIX
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.
FIX
-2.40
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 9.1%Institutions 67.3%Retail & Other 23.6%
No. of Institutional Holders7,690
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.
FIX
Insiders 1.3%Institutions 97.0%Retail & Other 1.7%
No. of Institutional Holders1,397
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
FIX
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
9
Sells (3M)
49
Sells (12M)
Total value (12M): $5.74B
HERRINGTON DOUGLAS J
Officer
$204,250
@ $204.25 · 2026-03-02
ZAPOLSKY DAVID A.
Officer
$3.65M
@ $205.40 · 2026-02-24
REYNOLDS SHELLEY L
Officer
$554,892
@ $205.90 · 2026-02-23
JASSY ANDREW R.
Chief Executive Officer
$4.08M
@ $205.18 · 2026-02-23
HERRINGTON DOUGLAS J
Officer
$1.41M
@ $205.82 · 2026-02-23
GARMAN MATTHEW S
Officer
$3.64M
@ $205.22 · 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
REYNOLDS SHELLEY L
Officer
$583,222
@ $216.41 · 2025-11-21
JASSY ANDREW R.
Chief Executive Officer
$4.31M
@ $216.94 · 2025-11-21
GARMAN MATTHEW S
Officer
$3.85M
@ $216.90 · 2025-11-21
HERRINGTON DOUGLAS J
Officer
$1.48M
@ $216.40 · 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
REYNOLDS SHELLEY L
Officer
$601,755
@ $221.64 · 2025-08-21
JASSY ANDREW R.
Chief Executive Officer
$4.40M
@ $221.58 · 2025-08-21
GARMAN MATTHEW S
Officer
$3.94M
@ $221.57 · 2025-08-21
HERRINGTON DOUGLAS J
Officer
$1.51M
@ $221.62 · 2025-08-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$3.95M
@ $222.74 · 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
REYNOLDS SHELLEY L
Officer
$541,129
@ $200.79 · 2025-05-21
JASSY ANDREW R.
Chief Executive Officer
$4.00M
@ $201.30 · 2025-05-21
GARMAN MATTHEW S
Chief Executive Officer
$4.21M
@ $201.30 · 2025-05-21
HERRINGTON DOUGLAS J
Chief Executive Officer
$1.37M
@ $200.77 · 2025-05-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$3.58M
@ $201.57 · 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
REYNOLDS SHELLEY L
Officer
$1.97M
@ $222.47 · 2025-02-21
JASSY ANDREW R.
Chief Executive Officer
$4.59M
@ $220.65 · 2025-02-21
GARMAN MATTHEW S
Officer
$3.36M
@ $220.69 · 2025-02-21
HERRINGTON DOUGLAS J
Officer
$1.36M
@ $222.47 · 2025-02-21
OLSAVSKY BRIAN T.
Chief Financial Officer
$3.26M
@ $223.14 · 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
REYNOLDS SHELLEY L
Officer
$759,090
@ $200.23 · 2024-11-21
JASSY ANDREW R.
Chief Executive Officer
$4.16M
@ $200.17 · 2024-11-21
GARMAN MATTHEW S
Chief Executive Officer
$3.05M
@ $200.19 · 2024-11-21
HERRINGTON DOUGLAS J
Officer
$1.22M
@ $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
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
RUBINSTEIN JONATHAN J
Director
$1.00M
@ $209.85 · 2024-11-07
BEZOS JEFFREY P
Officer, Director and Beneficial Owner
$1.23B
@ $205.48 · 2024-11-07
ALEXANDER KEITH BRIAN
Director
$176,733
@ $196.37 · 2024-11-04
HERRINGTON DOUGLAS J
Officer
$696,360
@ $198.96 · 2024-11-01
RUBINSTEIN JONATHAN J
Director
$1.00M
@ $199.85 · 2024-11-01
BEZOS JEFFREY P
Officer, Director and Beneficial Owner
$213.76M
@ $200.07 · 2024-11-01
HERRINGTON DOUGLAS J
Chief Executive Officer
$646,800
@ $184.80 · 2024-10-01
ZAPOLSKY DAVID A.
Officer
$427,050
@ $195.00 · 2024-09-24
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
FIX
9
Sells (3M)
32
Sells (12M)
Total value (12M): $126.81M
ANDERSON DARCY G
Director
$6.16M
@ $1369.74 · 2026-03-03
SHAEFF JULIE S
Officer
$3.16M
@ $1382.15 · 2026-03-03
REED TERRENCE M
Officer
$2.54M
@ $1419.80 · 2026-03-03
MYERS FRANKLIN
Director
$12.72M
@ $1472.56 · 2026-02-25
LANE BRIAN E
Chief Executive Officer
$13.61M
@ $1453.12 · 2026-02-25
SANDBROOK WILLIAM J
Director
$3.61M
@ $1443.32 · 2026-02-24
SKIDMORE CONSTANCE ELLEN
Director
$1.43M
@ $1425.00 · 2026-02-24
GEORGE WILLIAMIII
Chief Financial Officer
$12.91M
@ $1434.97 · 2026-02-23
MERCADO PABLO G
Director
$702,500
@ $1405.00 · 2026-02-23
HOWELL LAURA FINLEY
General Counsel
$996,163
@ $996.16 · 2025-12-04
GEORGE WILLIAMIII
Chief Financial Officer
$4.19M
@ $958.88 · 2025-12-01
LANE BRIAN E
Chief Executive Officer
$6.79M
@ $947.98 · 2025-11-24
ANDERSON DARCY G
Director
$3.83M
@ $958.72 · 2025-10-31
MYERS FRANKLIN
Director
$5.03M
@ $1006.68 · 2025-10-29
BULLS HERMAN E
Director
$2.03M
@ $1013.62 · 2025-10-29
MERCADO PABLO G
Director
$2.51M
@ $1005.41 · 2025-10-29
SANDBROOK WILLIAM J
Director
$1.08M
@ $721.89 · 2025-09-10
BULLS HERMAN E
Director
$2.13M
@ $710.00 · 2025-08-27
SANDBROOK WILLIAM J
Director
$482,702
@ $689.57 · 2025-08-25
MERCADO PABLO G
Director
$750,159
@ $695.88 · 2025-08-22
SHAEFF JULIE S
Officer
$964,460
@ $704.50 · 2025-08-12
GEORGE WILLIAMIII
Chief Financial Officer
$5.84M
@ $692.60 · 2025-08-08
LANE BRIAN E
Chief Executive Officer
$6.92M
@ $691.74 · 2025-08-07
MYERS FRANKLIN
Chairman of the Board
$3.08M
@ $683.57 · 2025-08-06
MCKENNA TRENT TIMOTHY
Chief Operating Officer
$3.15M
@ $716.63 · 2025-07-31
BULLS HERMAN E
Director
$1.25M
@ $500.01 · 2025-06-09
ANDERSON DARCY G
Director
$4.05M
@ $506.82 · 2025-06-06
GEORGE WILLIAMIII
Chief Financial Officer
$5.88M
@ $470.11 · 2025-05-13
SKIDMORE CONSTANCE ELLEN
Director
$452,980
@ $452.98 · 2025-05-12
ANDERSON DARCY G
Director
$1.29M
@ $431.66 · 2025-05-07
LANE BRIAN E
Chief Executive Officer
$6.47M
@ $431.66 · 2025-05-07
MERCADO PABLO G
Director
$784,980
@ $436.10 · 2025-05-05
MCKENNA TRENT TIMOTHY
Chief Operating Officer
$1.94M
@ $484.81 · 2024-11-22
LANE BRIAN E
Chief Executive Officer
$6.73M
@ $448.88 · 2024-11-13
GEORGE WILLIAMIII
Chief Financial Officer
$2.50M
@ $459.72 · 2024-11-08
MERCADO PABLO G
Director
$1.02M
@ $409.46 · 2024-11-05
MYERS FRANKLIN
Chairman of the Board
$4.68M
@ $390.18 · 2024-10-30
SHAEFF JULIE S
Officer
$814,881
@ $351.85 · 2024-08-29
ANDERSON DARCY G
Director
$1.19M
@ $336.19 · 2024-08-27
GEORGE WILLIAMIII
Chief Financial Officer
$1.94M
@ $332.16 · 2024-08-20
LANE BRIAN E
Chief Executive Officer
$4.94M
@ $329.55 · 2024-08-14
BULLS HERMAN E
Director
$1.18M
@ $337.41 · 2024-05-16
ANDERSON DARCY G
Director
$1.21M
@ $344.90 · 2024-05-07
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
😐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.
FIX
😏Greed(61/100)
"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 →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: Neutral (50)
FIX
⚪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 (61)