Inspire Medical Systems, Inc. (INSP) stock
INSPNYSESurgical & Medical Instruments & ApparatusFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 2, 2026Score 17/3029% below fair value
$61.10+0.56 (+0.93%)
Close on Nov 13, 2026Market cap $1.77BP/E 17.8Yield –
Inspire Medical Systems statistics
97 measures from SEC filings and the closing price. Hover a name for the formula; the last column is the median of companies in the same industry group.
Important dates
- Next earnings
- Jan 11, 2027 (estimated, after the close)
- Last ex-dividend date
- No dividends
- Fundamentals through
- Sep 30, 2026
- Share price as of
- Nov 13, 2026
Valuation ratiosIndustry
- P/TBV Ratio
- 2.14
- 4.81
- P/OCF Ratio
- 13.09
- 21.97
Enterprise valuationIndustry
- EV / Sales
- 1.63
- 2.60
- EV / EBIT
- 91.25
- 24.14
- EV / FCF
- 14.69
- 27.51
Share statisticsIndustry
- Shares Change (YoY)
- -3.43%
- 3.32%
- Shares Change (QoQ)
- 0.12%
- 0.20%
- Float
- 28M
- 37M
- Shares Held by Insiders
- 1.62%
- 10.5%
- Shares Held by Institutions
- 131.9%
- 60.5%
Short sellingIndustry
- Short Interest
- 4M
- –
- Short Interest Change
- -7.75%
- -2.57%
- Short % of Float
- 14.6%
- 5.11%
- Short % of Shares Outstanding
- 14.3%
- 3.98%
- Days to Cover
- 6.62
- 3.94
Stock price statisticsIndustry
- 52-Week High
- $147.03
- –
- 52-Week Low
- $38.91
- –
- 20-Day Moving Average
- $67.28
- –
- 50-Day Moving Average
- $68.95
- –
- 200-Day Moving Average
- $57.44
- –
- Average True Range (14)
- $2.89
- –
- Price Change (1 Week)
- -4.50%
- 0.99%
- Price Change (1 Month)
- -12.9%
- -3.52%
- Price Change (3 Months)
- 6.78%
- -7.86%
- Price Change (6 Months)
- 52.6%
- -1.12%
- Price Change (YTD)
- -33.8%
- -2.92%
- Price Change (1 Year)
- -32.8%
- -1.37%
- Price Change (3 Years)
- -54.1%
- 3.24%
- Price Change (5 Years)
- -78.1%
- -50.4%
- Average Volume (10 Days)
- 768,345
- –
- Average Volume (20 Days)
- 703,517
- –
- Average Volume (90 Days)
- 778,373
- –
- Relative Volume
- 0.73
- 0.76
- Relative Strength Index (14)
- 36.6
- 46.7
- Volatility (1 Year)
- 70.1%
- 64.2%
- Beta (5 Years)
- 1.08
- 1.04
MarginsIndustry
- Pretax Margin
- 3.50%
- -2.32%
- EBITDA Margin
- 3.90%
- -2.52%
- FCF Margin
- 11.1%
- 0.65%
Returns on capitalIndustry
- Return on Equity (ROE)
- 13.5%
- -17.3%
- Return on Assets (ROA)
- 11.4%
- -12.3%
- Return on Invested Capital (ROIC)
- 3.74%
- -2.83%
- Return on Capital Employed (ROCE)
- 1.84%
- -8.13%
Financial positionIndustry
- Current Ratio
- 6.45
- 2.49
- Quick Ratio
- 4.45
- 1.53
GrowthIndustry
- Revenue Growth (YoY)
- -0.19%
- 9.42%
- Net Income Growth (YoY)
- 126.0%
- 13.4%
- EPS Growth (YoY)
- 132.4%
- 15.1%
- FCF Growth (YoY)
- -0.94%
- 7.64%
- Revenue Growth (3Y CAGR)
- 30.8%
- 7.08%
- Revenue Growth (5Y CAGR)
- 51.2%
- 11.8%
EfficiencyIndustry
- Asset Turnover
- 1.00
- 0.59
- Inventory Turnover
- 0.76
- 2.20
- Revenue Per Employee
- $660.87K
- $331.99K
- Profits Per Employee
- $75.56K
- -$46.47K
- Employee Count
- 1,333
- 193
- WACC
- 10.5%
- 9.91%
Income statement (TTM)Industry
- Pretax Income
- $30.82M
- -$1.83M
Balance sheetIndustry
- Net Cash (Debt)
- $327.97M
- $3.95M
- Net Cash Per Share
- $11.34
- $0.26
- Equity (Book Value)
- $826.95M
- $63.80M
- Book Value Per Share
- $28.60
- $3.26
- Tangible Book Value
- $826.95M
- $11.61M
- Working Capital
- $530.29M
- $57.32M
Cash flow (TTM)Industry
- Capital Expenditures
- -$37.08M
- -$3.94M
- FCF Per Share
- $3.39
- -$0.00
Dividends and yieldsIndustry
- Earnings Yield
- 5.70%
- -4.76%
- FCF Yield
- 5.54%
- 0.28%
- Buyback Yield
- 2.83%
- 0.80%
- Shareholder Yield
- 2.83%
- 1.12%
Taxes and interestIndustry
- Income Tax
- -$69.90M
- $1.55M
- Effective Tax Rate
- -226.8%
- 18.0%
Scores and fair valueIndustry
- Graham Number
- $47.05
- $38.11
- Graham Upside
- -23.0%
- -56.1%
- Altman Z-Score
- 9.79
- 2.47
- Piotroski F-Score
- 6
- 5
- Beneish M-Score
- -1.76
- -2.64
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 13, 2026. The S&P 500 is measured by the SPY fund.
| Period | INSP | S&P 500 | Difference | INSP per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -11.3% | -3.0% | −8.2 pts | ||
| 3 months | +5.0% | -2.8% | +7.8 pts | ||
| Year to date | -33.8% | +11.5% | −45.2 pts | ||
| 1 year | -29.6% | +13.5% | −43.1 pts | ||
| 3 years | -51.2% | +77.7% | −128.9 pts | -21.3% | +21.1% |
| 5 years | -78.1% | +72.6% | −150.7 pts | -26.2% | +11.5% |
Short interest
Shares sold short and not yet covered, reported by brokers to FINRA twice a month. Latest settlement date Oct 30, 2026.
4M INSP shares were sold short on Oct 30, 2026, down 7.7% from the previous report, or 14.57% of the shares available to trade. At recent volumes it would take 6.6 days to buy them back. Over the last 20 sessions, 55.2% of the volume reported to FINRA was short selling.
| Settlement date | Shares short | Change | Avg. daily volume | Days to cover |
|---|---|---|---|---|
| Oct 30, 2026 | 4,144,263 | -7.7% | 625,586 | 6.6 |
| Oct 15, 2026 | 4,492,372 | +7.1% | 1,000,797 | 4.5 |
| Sep 30, 2026 | 4,195,817 | +6.8% | 906,711 | 4.6 |
| Sep 15, 2026 | 3,928,250 | +7.4% | 795,398 | 4.9 |
| Aug 31, 2026 | 3,656,612 | -16.4% | 488,000 | 7.5 |
| Aug 14, 2026 | 4,373,708 | +11.6% | 841,529 | 5.2 |
| Jul 31, 2026 | 3,920,330 | -9.8% | 781,458 | 5.0 |
| Jul 15, 2026 | 4,344,629 | -7.5% | 1,044,030 | 4.2 |
| Jun 30, 2026 | 4,694,748 | +30.8% | 1,234,943 | 3.8 |
| Jun 15, 2026 | 3,589,616 | -2.9% | 951,982 | 3.8 |
| May 29, 2026 | 3,695,854 | +0.4% | 1,187,303 | 3.1 |
| May 15, 2026 | 3,681,515 | +15.5% | 1,750,524 | 2.1 |
Ratios use trailing-twelve-month results and the latest balance sheet. How we calculate.
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