ONE LEVEL DEEPER
INSM
Warren Buffett frameworkThe Owner-OperatorBenjamin Graham frameworkThe Value ArchitectMichael Mauboussin frameworkThe Expectations EngineerHoward Marks frameworkThe Cycle WhispererPeter Lynch frameworkThe Everyday Edge

At -28.3x earnings, Insmed demands investors accept -0.88% yield versus 4.33% treasuries for unproven transformation.

cautiousBearishconviction

At -28.3x earnings with a -0.88% yield versus 4.33% treasuries, this rare disease specialist embodies everything this framework warns against.

THE LENSES
THE MARGIN OF SAFETYdangerous

Does the price protect me from permanent loss of capital?

Price at $162.43 versus DCF valuation of -$148, a 209.7% premium to fundamental value
P/E at -28.3x, at 0th percentile of 10-year range due to deep losses
TTM net income of -$1.28B with operating losses of -$1.18B
Market cap implies dramatic transformation not captured in traditional valuation models

This framework sees no margin of safety whatsoever. The price demands belief in a transformation that current losses do not support. At 209.7% above even the most generous DCF estimate, any disappointment creates catastrophic downside.

P/E Ratio
EARNINGS YIELD VS BONDSspeculative

Does the stock offer a meaningful premium over bonds to justify equity risk?

Earnings yield of -0.88% versus treasury yield of 4.33%
Negative spread of -5.21 percentage points
Revenue growth of 85.4% YoY in Q4'25 cannot offset current losses
Would require years of perfect execution to generate positive yield

Applying this lens reveals the arithmetic impossibility. A -0.88% earnings yield against 4.33% risk-free returns is not an investment — it is speculation on biological transformation. Growth alone cannot justify this spread.

Earnings Yield
THE EARNINGS RECORDunproven

Has the company demonstrated consistent earnings over 7-10 years?

Net income of -$328M in Q4'25 despite record revenue of $264M
Operating margin improved to -94.6% in Q4'25 from mean of -233.3%
Company has never generated positive earnings in available data
Gross margin at 82.5% shows pricing power but no earnings leverage

This framework requires demonstrated earnings, not promises. Despite improving margins and strong revenue growth, the company remains deeply unprofitable. Hope is not evidence.

Net Income
BALANCE SHEET FORTRESStemporary

Can the balance sheet survive a prolonged downturn?

Cash position of $1.4B with quarterly burn of -$248M in Q4'25
Debt reduced from $1.31B in Q4'24 to $768M in Q4'25
Current ratio of 5.61 indicates strong liquidity
Approximately 5.6 quarters of runway at current burn rate

The balance sheet provides temporary protection but not a fortress. At current burn rates, the $1.4B cash position depletes in under two years. This framework sees a countdown, not security.

Current Ratio
KEY NUMBERS
VERDICT

Applying this framework to Insmed yields a clear conclusion: this is not an investment but a wager on biological transformation. With -28.3x earnings, a -5.21% yield spread to treasuries, and cash runway measured in quarters not years, the numbers offer no protection. Mr. Market's 209.7% premium to fundamental value suggests euphoria, not opportunity. Would Graham recognize this as investing or speculation?

This analysis applies Benjamin Graham's published investment framework to publicly available financial data. It is not authored by, endorsed by, or affiliated with Benjamin Graham. Educational purposes only. Not financial advice.

OTHER PERSPECTIVES
Peter Lynch framework
The Everyday Edge
Leaning Bearish
Warren Buffett framework
The Owner-Operator
Leaning Bearish
Michael Mauboussin framework
The Expectations Engineer
Bearish
Howard Marks framework
The Cycle Whisperer
Bearish
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