Inspire Medical Systems, Inc. (INSP) P/E Ratio History
UndervaluedTrading at 18.4x vs 5Y avg 130.7x · 20th percentile · Below historical baseline · Data 2024–2026
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P/E Ratio Analysis
As of November 8, 2026, Inspire Medical Systems, Inc. (INSP) trades at a price-to-earnings ratio of 18.4x, with a stock price of $63.98 and trailing twelve-month earnings per share of $3.48.
The current P/E is 86% below its 5-year average of 130.7x. Over the past five years, INSP's P/E has ranged from a low of 9.7x to a high of 743.5x, placing the current valuation at the 20th percentile of its historical range.
Compared to the Healthcare sector median P/E of 24.6x, INSP trades at a 25% discount to its sector peers. The sector includes 242 companies with P/E ratios ranging from 0.0x to 196.0x.
Relative to the broader market, INSP trades roughly in line with the S&P 500 median P/E of 21.8x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our INSP DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
INSP Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
INSP P/E vs Peers
Neuromodulation Devices peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $131B | 25.0 | 3.58Best | +3% | |
| $191B | 40.6 | 4.91 | -51% | |
| $64B | 17.8 | - | +55%Best | |
| $26B | 15.9Lowest | - | +20% | |
| $5B | 32.9 | - | +5% | |
| $4B | 42.2 | 9.59 | -15% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
INSP Historical P/E Data (2024–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q3 | Sep 30 2026 | $69.36 | $3.44 | 20.2x | -85% |
| FY2026 Q2 | - | $44.61 | $4.62 | 9.7x | -93% |
| FY2026 Q1 | - | $51.58 | $4.49 | 11.5x | -91% |
| FY2025 Q4 | Dec 31 2025 | $92.23 | $4.98 | 18.5x | -86% |
| FY2025 Q3 | - | $74.20 | $1.47 | 50.5x | -61% |
| FY2025 Q2 | Jun 30 2025 | $129.77 | $1.73 | 75.1x | -43% |
| FY2025 Q1 | Mar 31 2025 | $159.28 | $2.17 | 73.4x | -44% |
| FY2024 Q4 | - | $185.38 | $1.73 | 107.2x | -18% |
| FY2024 Q3 | Sep 30 2024 | $211.05 | $1.07 | 197.2x | +51% |
| FY2024 Q2 | Jun 30 2024 | $133.83 | $0.18 | 743.5x | +469% |
Average P/E for displayed period: 130.7x
INSP Chart Terminal
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Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
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Peer Comparison
Compare growth, multiples, and margins vs sector.
INSP — Frequently Asked Questions
Quick answers to the most common questions about buying INSP stock.
What is INSP's P/E ratio?
Inspire Medical Systems, Inc. (INSP) trailing twelve-month P/E ratio is 18.4x, based on TTM diluted EPS of $3.48. The 5-year average P/E is 130.7x and the historical range spans 9.7x to 743.5x.
Is INSP stock overvalued or undervalued?
INSP trades at 18.4x P/E, below its 5-year average of 130.7x. At the 20th percentile of its historical range (9.7x–743.5x), the stock is priced at a discount to its own history.
Is INSP stock expensive?
No, INSP is not expensive on a historical basis. The current P/E of 18.4x is below the 5-year average of 130.7x and sits at the 20th percentile of its valuation range.
What is INSP's historical P/E range?
Over the past 5 years, INSP's P/E ratio has ranged from 9.7x to 743.5x, with a median of 73.4x and an average of 130.7x. The current P/E of 18.4x places the stock at the 20th percentile of this range. Full historical data spans 2024–2026.
How does INSP's P/E compare to the S&P 500?
INSP trades at 18.4x P/E versus the S&P 500 median of 21.8x. The 16% discount to the market suggests lower growth expectations or perceived higher risk.
How does INSP's valuation compare to Healthcare peers?
Inspire Medical Systems, Inc. P/E of 18.4x compares to the Healthcare sector median of 24.6x. The discount suggests lower growth expectations, weaker margins, or higher perceived risk relative to peers. See the peer comparison table on this page for ticker-by-ticker P/E and PEG.
What is INSP's PEG ratio?
INSP PEG ratio is N/A, based on a P/E of 18.4x and EPS growth of 179.4%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is INSP's earnings yield?
INSP earnings yield is 5.44%, the inverse of its 18.4x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.