INSPInspire Medical Systems, Inc.

$71.06-8.1% 1Y

What is the market doing?

Mixed

No clear lean: in an uptrend, but heavily shorted (+15% of shares).

1 good, 1 to watch, 1 neutral
TrendUptrendderived · Oct 23, 2026

In an uptrend, above its rising 50- and 200-day averages. Price is +18% vs its 200-day average.

Insider conviction−$57K (90 days to Oct 22, 2026)SEC EDGAR · Oct 22, 2026

Insiders were net sellers over the 90 days ending Oct 22, 2026; selling is often routine (taxes, diversification).

Short interest15% of sharesFINRA · Sep 30, 2026

Heavily shorted, settled Sep 30, 2026, about a week of normal trading to cover. Up 6.8% since the previous count, down from 16.2% of shares outstanding three months ago.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

1-year returnbehind 72% of the market
vs 200-day avgbetter than 84% of the market

Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.

How INSP is trading

Inspire Medical Systems, Inc. is −8.1% over the past year while the S&P 500 is +16%: 24 points behind the market.

−8.1%

1-year return · S&P 500 +16%

vs 200-day average
+18%

vs 200-day average · a clear uptrend

RSI (14)
51

RSI (14) · neutral

Below its 52-week high
51%

Below its 52-week high

Oct 15, 2024$40.05 – $215.42 · dashed line: 200-day averageOct 23, 2026
Details›
Last close2026-10-23
$71.06
1 monthS&P 500 −0.94%
+3.2%
1 yearS&P 500 +16%
−8.1%
5 yearsS&P 500 +86%
−70%
vs 50-day average$67.38
+5.5%
52-week high
$143.99
52-week low
$40.05
Annualised volatility
65%
Insider selling, net, 6 monthsForms 3/4/5 to 2026-10-22
$202K
Calendar-year price return
YearReturn
2026 (year to date)−23%
2025−50%
2024−8.9%
2023−19%
2022+9.5%
2021+22%
2020+153%
2019+76%
Average return by calendar month, 2018–2026
MonthYearsPositiveAverage
Jan86 of 8+2.7%
Feb85 of 8+3.1%
Mar82 of 8−8.5%
Apr85 of 8+5.0%
May83 of 8−9.1%
Jun96 of 9+3.6%
Jul96 of 9+7.5%
Aug96 of 9+6.9%
Sep94 of 9−4.1%
Oct93 of 9−2.3%
Nov85 of 8+20%
Dec85 of 8+1.9%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.

Where the price stands

Its trend against the 50-day and 200-day averages, and the levels it keeps coming back to.

What it has returned

With dividends, year by year, month by month, and by calendar month on average.