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Compare Stocks › BAC vs BIIB

Bank of America Corporation (BAC) vs Biogen Inc. (BIIB)

BAC
Bank of America Corporation
$53.24
VS
BIIB
Biogen Inc.
$187.06

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.
BIIB
  • ★Gross margin of 78.7% indicates strong pricing power — typical of businesses with significant intellectual property or brand strength.
  • ★Free cash flow has grown at a 19.9% CAGR over the past 4 years, demonstrating strong earnings power growth.
  • ★PEG ratio of 0.65 suggests the stock is undervalued relative to its growth rate — paying less than 1x for each unit of earnings 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.
BIIB
  • ⚠FCF yield of 6.9% suggests reasonable valuation assuming continued moderate growth.

Key Valuation Metrics

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BAC
BIIB
Valuation
N/A
Free Cash Flow
$1.92B
N/A
FCF Yield
6.94%
13.24
Trailing P/E
20.11
10.56
Forward P/E
11.38
Quality & Moat
3.89%
ROIC
7.13%
N/A
ROE
6.93%
0.00%
Gross Margin
78.72%
0.54
PEG Ratio
0.65
Balance Sheet Safety
N/A
Debt / Equity
0.35
N/A
Interest Coverage
N/A
N/A
Net Debt / EBITDA
0.65
2.10%
Dividend Yield
N/A
BAC: 3Ties: 1BIIB: 2
BACBIIB

Historical Fundamentals

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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.

BIIB

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

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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
BIIB
$-3.44
created per $1 retained over 3 years
Market Cap Declined
Σ Retained
$4.09B
Δ Market Cap
$-14.04B
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

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

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BAC
59.1% Margin of Safety
Price is 59.1% below estimated fair value
Current Price: $53.24
Fair Value: $130.24
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
BIIB
54.9% Margin of Safety
Price is 54.9% below estimated fair value
Current Price: $187.06
Fair Value: $414.98
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

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BAC

Requires positive FCF to compute implied growth rate.

BIIB

What growth rate is the market pricing in at $187?

+9.7%
Market-Implied Owner Earnings Growth
Standard FCF implies +4.3%

The market implies +9.7% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +4.3%, reflecting heavy growth investment.

Economic Moat Score

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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.
BIIB
55/100
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 5 years of fundamental data.

Forensic Accounting

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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.
BIIB
-2.64
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

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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.
BIIB
Insiders 0.2%Institutions 97.7%Retail & Other 2.1%
No. of Institutional Holders1,419
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

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BAC
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
BIIB
1
Buys (3M)
1
Buys (12M)
Total value (12M): $585.00
MURPHY NICOLE
Officer
$585.00
@ $195.00 · 2026-02-12
DORSA CAROLINE D
Director
$151,559
@ $122.72 · 2025-05-02
Open market purchases · includes direct & indirect ownership · excludes option exercises

Open market purchases · includes direct & indirect ownership · excludes option exercises.

Insider Selling Activity

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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
BIIB
1
Sells (3M)
5
Sells (12M)
Total value (12M): $1.52M
SINGHAL PRIYA
Officer
$531,548
@ $199.83 · 2026-02-09
SINGHAL PRIYA
Officer
$134,116
@ $179.30 · 2026-02-02
SINGHAL PRIYA
Officer
$69,045
@ $133.55 · 2025-09-02
IZZAR RACHID
Officer
$300,105
@ $135.00 · 2025-07-08
SINGHAL PRIYA
Officer
$480,508
@ $126.25 · 2025-05-19
SHERWIN STEPHEN A
Director
$1.31M
@ $150.02 · 2025-03-07
SINGHAL PRIYA
Officer
$17,293
@ $157.21 · 2024-12-09
SINGHAL PRIYA
Officer
$88,019
@ $204.22 · 2024-09-03
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

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BAC
FearGreed
😏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.
BIIB
FearGreed
😏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

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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)
BIIB
⚪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)
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