Compare Stocks › AMZN vs STX
Amazon.com, Inc. (AMZN) vs Seagate Technology Holdings plc (STX)
AMZN
Amazon.com, Inc.
$208.76
VS
STX
Seagate Technology Holdings plc
$434.60
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.
STX
- ★PEG ratio of 0.72 suggests the stock is undervalued relative to its growth rate — paying less than 1x for each unit of earnings growth.
- ★Altman Z-Score of 4.80 indicates very low bankruptcy risk — the company is firmly in the safe zone.
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.
STX
- ⚠FCF yield of 1.1% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠Trailing P/E of 49.0x is 80% above the historical average of 27.3x — the stock trades at a premium to its own history.
- ⚠High leverage (10.47x debt/equity) combined with thin interest coverage (-1.0x) poses financial risk.
Key Valuation Metrics
Learn more →AMZN
STX
Valuation
$23.79B
Free Cash Flow
$1.10B
1.06%
FCF Yield
1.13%
29.16
Trailing P/E
49.00
22.35
Forward P/E
21.91
Quality & Moat
10.12%
ROIC
45.21%
18.89%
ROE
320.04%
50.29%
Gross Margin
38.78%
5.83
PEG Ratio
0.72
Balance Sheet Safety
0.43
Debt / Equity
10.47
N/A
Interest Coverage
N/A
0.38
Net Debt / EBITDA
1.32
N/A
Dividend Yield
0.68%
AMZN: 5Ties: 2STX: 4
AMZNSTX
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.
STX
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
STX
N/A
Net losses over 3 years — test not applicable
Company had negative cumulative retained earnings
Σ Retained
$-492.0M
Δ Market Cap
+$47.53B
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
STX
5.5% Margin of Safety
Price is 5.5% below estimated fair value
Current Price: $434.60
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $459.97
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.
STX
What growth rate is the market pricing in at $435?
+24.6%
Market-Implied Owner Earnings Growth
Standard FCF implies +28.8%
The market implies +24.6% Owner Earnings growth, above historical trends.
Standard FCF implies a demanding +28.8%, reflecting heavy growth investment.
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.
STX
32/100
No Moat
70+ Wide · 40-69 Narrow · <40 None
No durable moat detected, though reinvestment efficiency shows some competitive positioning. The business lacks consistent evidence of sustainable advantages.
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 →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.
STX
-1.47
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 →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.
STX
Insiders 0.3%Institutions 89.8%Retail & Other 9.9%
No. of Institutional Holders1,736
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
STX
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
STX
11
Sells (3M)
56
Sells (12M)
Total value (12M): $146.19M
MORRIS JOHN CHRISTOPHER
Chief Technology Officer
$42,273
@ $377.44 · 2026-03-13
MOSLEY WILLIAM D
Chief Executive Officer
$7.70M
@ $384.76 · 2026-03-02
CONYERS YOLANDA LEE
Director
$295,192
@ $393.59 · 2026-03-02
MORRIS JOHN CHRISTOPHER
Chief Technology Officer
$98,400
@ $410.00 · 2026-02-24
CHONG KIAN FATT
Officer
$2.43M
@ $416.48 · 2026-02-23
MOSLEY WILLIAM D
Chief Executive Officer
$8.59M
@ $429.27 · 2026-02-02
GELDMACHER JAY L
Director
$414,423
@ $448.02 · 2026-01-30
TEH BAN-SENG
Officer
$8.93M
@ $442.29 · 2026-01-29
LEE JAMES CI
Officer
$234,776
@ $348.85 · 2026-01-26
TEH BAN-SENG
Officer
$422,626
@ $299.31 · 2026-01-12
MOSLEY WILLIAM D
Chief Executive Officer
$5.71M
@ $285.56 · 2026-01-02
MORRIS JOHN CHRISTOPHER
Chief Technology Officer
$32,984
@ $291.89 · 2025-12-15
TEH BAN-SENG
Officer
$594,759
@ $295.90 · 2025-12-11
CONYERS YOLANDA LEE
Director
$204,682
@ $272.91 · 2025-12-02
MOSLEY WILLIAM D
Chief Executive Officer
$5.42M
@ $271.03 · 2025-12-01
ROMANO GIANLUCA
Chief Financial Officer
$2.13M
@ $266.69 · 2025-11-13
ROMANO GIANLUCA
Chief Financial Officer
$15.40M
@ $285.16 · 2025-11-12
LEE JAMES CI
Officer
$201,419
@ $288.98 · 2025-11-11
TEH BAN-SENG
Officer
$408,040
@ $288.98 · 2025-11-11
ARUMUGAVELU SHANKAR
Director
$1.47M
@ $294.56 · 2025-11-10
TEH BAN-SENG
Officer
$1.62M
@ $270.00 · 2025-11-05
MOSLEY WILLIAM D
Chief Executive Officer
$5.26M
@ $262.82 · 2025-11-03
TILENIUS STEPHANIE SCHEAR
Director
$545,084
@ $266.41 · 2025-11-03
GELDMACHER JAY L
Director
$336,375
@ $269.10 · 2025-10-31
CHONG KIAN FATT
Officer
$1.93M
@ $272.14 · 2025-10-30
TEH BAN-SENG
Officer
$318,040
@ $225.56 · 2025-10-13
MOSLEY WILLIAM D
Chief Executive Officer
$5.00M
@ $249.90 · 2025-10-01
MORRIS JOHN CHRISTOPHER
Chief Technology Officer
$79,645
@ $211.26 · 2025-09-16
MORRIS JOHN CHRISTOPHER
Chief Technology Officer
$3.00M
@ $195.80 · 2025-09-12
TEH BAN-SENG
Officer
$721,396
@ $193.30 · 2025-09-11
TEH BAN-SENG
Officer
$1.30M
@ $191.53 · 2025-09-10
CONYERS YOLANDA LEE
Director
$126,599
@ $168.80 · 2025-09-02
MOSLEY WILLIAM D
Chief Executive Officer
$3.38M
@ $168.97 · 2025-09-02
TEH BAN-SENG
Officer
$261,376
@ $151.61 · 2025-08-11
GELDMACHER JAY L
Director
$376,250
@ $150.50 · 2025-08-06
LEE JAMES CI
Officer
$714,145
@ $154.41 · 2025-08-01
TEH BAN-SENG
Officer
$915,275
@ $155.00 · 2025-08-01
MOSLEY WILLIAM D
Chief Executive Officer
$3.07M
@ $153.75 · 2025-08-01
TEH BAN-SENG
Officer
$248,400
@ $144.00 · 2025-07-11
MOSLEY WILLIAM D
Chief Executive Officer
$2.89M
@ $144.66 · 2025-07-01
TEH BAN-SENG
Officer
$77,870
@ $130.00 · 2025-06-16
TEH BAN-SENG
Officer
$222,353
@ $129.05 · 2025-06-11
TEH BAN-SENG
Officer
$222,353
@ $129.05 · 2025-06-11
TEH BAN-SENG
Officer
$467,220
@ $130.00 · 2025-06-09
MOSLEY WILLIAM D
Chief Executive Officer
$7.08M
@ $130.19 · 2025-06-09
TILENIUS STEPHANIE SCHEAR
Director
$344,801
@ $128.04 · 2025-06-05
TEH BAN-SENG
Officer
$9.28M
@ $124.24 · 2025-06-04
MOSLEY WILLIAM D
Chief Executive Officer
$8.39M
@ $119.87 · 2025-06-03
CONYERS YOLANDA LEE
Director
$87,758
@ $117.01 · 2025-06-02
CANNON MICHAEL REYE
Director
$2.88M
@ $119.00 · 2025-06-02
ROMANO GIANLUCA
Chief Financial Officer
$6.09M
@ $117.45 · 2025-05-30
TEH BAN-SENG
Officer
$483,115
@ $115.00 · 2025-05-27
MOSLEY WILLIAM D
Chief Executive Officer
$7.66M
@ $109.47 · 2025-05-22
MOSLEY WILLIAM D
Chief Executive Officer
$7.66M
@ $109.47 · 2025-05-22
CHONG KIAN FATT
Officer
$713,148
@ $111.26 · 2025-05-22
MOSLEY WILLIAM D
Chief Executive Officer
$1.69M
@ $84.56 · 2025-04-01
MOSLEY WILLIAM D
Chief Executive Officer
$2.03M
@ $101.57 · 2025-03-03
CONYERS YOLANDA LEE
Director
$77,212
@ $102.95 · 2025-03-03
MOSLEY WILLIAM D
Chief Executive Officer
$1.88M
@ $94.13 · 2025-02-03
MOSLEY WILLIAM D
Chief Executive Officer
$1.73M
@ $86.65 · 2025-01-02
MORRIS JOHN CHRISTOPHER
Chief Technology Officer
$13,883
@ $98.46 · 2024-12-12
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.
STX
😐Neutral(59/100)
"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: Neutral (50)
STX
⚪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 (59)