Compare Stocks › BAC vs ISRG
Bank of America Corporation (BAC) vs Intuitive Surgical, Inc. (ISRG)
BAC
Bank of America Corporation
$53.24
VS
ISRG
Intuitive Surgical, Inc.
$457.78
Rewards
BAC
- ★Bank of America Corporation scores 100/100 on the Economic Moat Score (Wide Moat), with revenue predictability as the strongest competitive dimension.
- ★PEG ratio of 0.54 suggests the stock is undervalued relative to its growth rate — paying less than 1x for each unit of earnings growth.
ISRG
- ★Gross margin of 66.3% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
- ★Intuitive Surgical, Inc. scores 89/100 on the Economic Moat Score (Wide Moat), with revenue predictability as the strongest competitive dimension.
- ★Free cash flow has grown at a 37.5% CAGR over the past 4 years, demonstrating strong earnings power growth.
Risks
BAC
- ⚠Gross margin of 0.0% is low, suggesting a competitive or commodity-like market with limited pricing power.
- ⚠Altman Z-Score of 0.22 places the company in the distress zone — financial patterns resemble those of companies that experienced bankruptcy.
- ⚠5 insider sales totaling $20.2M with no purchases in the past 3 months — insiders are reducing their exposure.
ISRG
- ⚠FCF yield of 1.4% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
- ⚠PEG ratio of 2.96 indicates the stock is expensive relative to its expected growth — the market may be pricing in more growth than analysts project.
- ⚠7 insider sales totaling $3.1M with no purchases in the past 3 months — insiders are reducing their exposure.
Key Valuation Metrics
Learn more →BAC
ISRG
Valuation
N/A
Free Cash Flow
$2.25B
N/A
FCF Yield
1.39%
13.24
Trailing P/E
55.56
10.56
Forward P/E
38.83
Quality & Moat
3.89%
ROIC
N/A
N/A
ROE
N/A
0.00%
Gross Margin
66.29%
0.54
PEG Ratio
2.96
Balance Sheet Safety
N/A
Debt / Equity
N/A
N/A
Interest Coverage
No debt
N/A
Net Debt / EBITDA
-1.16
2.10%
Dividend Yield
N/A
BAC: 3ISRG: 1
BACISRG
Historical Fundamentals
Learn more →BAC
Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.
ISRG
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 →BAC
$2.37
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$55.63B
Δ Market Cap
+$131.83B
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
ISRG
Not enough historical data to compute the retained earnings test.
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 →BAC
59.1% Margin of Safety
Price is 59.1% below estimated fair value
Current Price: $53.24
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Fair Value: $130.24
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
ISRG
127.6% Overvalued
Price is 127.6% above estimated fair value
Current Price: $457.78
Strongly undervalued
Strongly overvalued
Fair Value: $201.12
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
Reverse DCF — Market-Implied Growth
Learn more →BAC
Requires positive FCF to compute implied growth rate.
ISRG
What growth rate is the market pricing in at $458?
+24.8%
Market-Implied FCF Growth Rate
Market roughly matching historical growth — reasonable.
Economic Moat Score
Learn more →BAC
100/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None
Wide moat driven primarily by revenue predictability. Reinvestment Efficiency 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.
ISRG
89/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None
Wide moat with strength across all dimensions. Revenue Predictability is the standout factor.
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 →BAC
-2.31
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.
ISRG
-3.07
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 →BAC
Insiders 7.4%Institutions 71.5%Retail & Other 21.1%
No. of Institutional Holders4,375
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.
ISRG
Insiders 0.6%Institutions 89.4%Retail & Other 10.1%
No. of Institutional Holders3,195
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 →BAC
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
ISRG
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 →BAC
5
Sells (3M)
5
Sells (12M)
Total value (12M): $20.17M
MENSAH BERNARD AMPONSAH
Officer
$4.41M
@ $46.94 · 2026-03-12
BRONSTEIN SHERI B
Officer
$2.99M
@ $49.91 · 2026-03-05
SCRIVENER THOMAS M
Officer
$2.49M
@ $49.82 · 2026-03-05
ATHANASIA DEAN C
President
$6.86M
@ $50.21 · 2026-03-03
BORTHWICK ALASTAIR M.
Chief Financial Officer
$3.42M
@ $50.24 · 2026-02-27
MENSAH BERNARD AMPONSAH
Officer
$3.66M
@ $39.80 · 2024-08-27
HANS LINDSAY D
Officer
$402,410
@ $36.91 · 2024-08-05
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
ISRG
7
Sells (3M)
29
Sells (12M)
Total value (12M): $69.33M
LADD AMY L
Director
$291,886
@ $471.54 · 2026-04-29
CURET MYRIAM J
Officer
$51,865
@ $493.95 · 2026-03-10
BROSIUS MARK PRESTON
Officer
$630,475
@ $487.61 · 2026-03-09
BROSIUS MARK PRESTON
Officer
$1.82M
@ $496.19 · 2026-03-05
WIDMAN FREDRIK
Officer
$181,915
@ $495.68 · 2026-03-03
WADORS PATRICIA L.
Officer
$109,936
@ $499.71 · 2026-02-27
WIDMAN FREDRIK
Officer
$65,830
@ $494.96 · 2026-02-11
CURET MYRIAM J
Officer
$65,523
@ $520.02 · 2026-01-29
CURET MYRIAM J
Officer
$122,500
@ $532.61 · 2026-01-27
BROSIUS MARK PRESTON
Officer
$2.72M
@ $547.47 · 2025-12-15
BROSIUS MARK PRESTON
Officer
$2.63M
@ $547.36 · 2025-12-12
CURET MYRIAM J
Officer
$58,230
@ $559.90 · 2025-12-10
CURET MYRIAM J
Officer
$71,124
@ $568.99 · 2025-12-01
GUTHART GARY S
Officer and Director
$13.02M
@ $570.89 · 2025-12-01
CHARLTON HENRY L
Officer
$7.96M
@ $580.00 · 2025-11-12
BARRATT CRAIG H
Director
$435,000
@ $580.00 · 2025-11-12
CURET MYRIAM J
Officer
$58,800
@ $560.00 · 2025-11-10
MILLER BRIAN EDWARD
Officer
$2.01M
@ $575.00 · 2025-11-10
WIDMAN FREDRIK
Officer
$1.14M
@ $550.00 · 2025-11-05
CURET MYRIAM J
Officer
$4.22M
@ $548.34 · 2025-10-29
BARRATT CRAIG H
Director
$1.20M
@ $548.01 · 2025-10-24
ROSA DAVID J
Chief Executive Officer
$13.41M
@ $547.55 · 2025-10-24
LADD AMY L
Director
$305,588
@ $455.42 · 2025-09-04
GUTHART GARY S
Officer and Director
$13.87M
@ $472.49 · 2025-08-29
CURET MYRIAM J
Officer
$2.22M
@ $492.48 · 2025-07-25
BROSIUS MARK PRESTON
Officer
$242,182
@ $561.91 · 2025-06-06
BROSIUS MARK PRESTON
Officer
$355,139
@ $550.60 · 2025-06-04
BROSIUS MARK PRESTON
Officer
$23,596
@ $561.81 · 2025-05-16
BROSIUS MARK PRESTON
Officer
$36,886
@ $558.88 · 2025-05-14
SAMATH JAMIE E.
Chief Financial Officer
$483,074
@ $527.95 · 2025-05-02
NACHTSHEIM JAMI DOVER K
Director
$1.25M
@ $520.00 · 2025-05-01
LADD AMY L
Director
$4.44M
@ $505.55 · 2025-04-30
DESANTIS ROBERT
Officer
$508,509
@ $513.65 · 2025-04-29
CURET MYRIAM J
Officer
$2.05M
@ $513.18 · 2025-04-25
LOEB GARY
Officer
$872,406
@ $513.18 · 2025-04-25
DESANTIS ROBERT
Officer
$5.76M
@ $499.22 · 2025-03-13
MILLER BRIAN EDWARD
Officer
$6.37M
@ $493.44 · 2025-03-12
BROSIUS MARK PRESTON
Officer
$260,725
@ $533.18 · 2025-03-07
BROSIUS MARK PRESTON
Officer
$824,991
@ $558.94 · 2025-03-06
ROSA DAVID J
President
$9.20M
@ $557.52 · 2025-03-05
CURET MYRIAM J
Officer
$1.75M
@ $577.30 · 2025-03-03
WIDMAN FREDRIK
Officer
$464,762
@ $573.78 · 2025-03-03
BROSIUS MARK PRESTON
Officer
$282,300
@ $573.78 · 2025-03-03
SAMATH JAMIE E.
Chief Financial Officer
$106,585
@ $566.94 · 2025-02-28
CURET MYRIAM J
Officer
$1.39M
@ $581.00 · 2025-02-27
SAMATH JAMIE E.
Chief Financial Officer
$61,652
@ $570.85 · 2025-02-26
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 →BAC
😏Greed(64/100)
"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.
ISRG
😐Neutral(43/100)
"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 →BAC
⚪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 (64)
ISRG
⚪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 (43)