PENPenumbra, Inc.
What is the market doing?
No clear lean: rangebound and moderately shorted.
Rangebound, no clear trend. Overbought (RSI 76). Price is −1% vs its 200-day average.
Moderately shorted, settled Sep 30, 2026, about a week of normal trading to cover. Up 24% since the previous count, up from 5.2% 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.
Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.
How PEN is trading
Penumbra, Inc. is +28% over the past year while the S&P 500 is +16%: 12 points ahead of the market.
1-year return · S&P 500 +16%
- vs 200-day average
- −0.74%
vs 200-day average · below trend, but not far
- RSI (14)
- 76
RSI (14) · overbought, bought harder than it has been sold
- Below its 52-week high
- 9.6%
Below its 52-week high
Details›
- Last close2026-10-23
- $324.78
- 1 monthS&P 500 −0.94%
- +1.6%
- 1 yearS&P 500 +16%
- +28%
- 5 yearsS&P 500 +86%
- +28%
- vs 50-day average$321.10
- +1.1%
- 52-week high
- $359.40
- 52-week low
- $225.54
- Annualised volatility
- 32%
| Year | Return |
|---|---|
| 2026 (year to date) | +4.5% |
| 2025 | +31% |
| 2024 | −5.6% |
| 2023 | +13% |
| 2022 | −23% |
| 2021 | +64% |
| 2020 | +6.5% |
| 2019 | +34% |
| 2018 | +30% |
| 2017 | +47% |
| Month | Years | Positive | Average |
|---|---|---|---|
| Jan | 10 | 9 of 10 | +11% |
| Feb | 10 | 5 of 10 | +0.95% |
| Mar | 10 | 5 of 10 | +0.93% |
| Apr | 10 | 6 of 10 | +0.10% |
| May | 10 | 3 of 10 | −1.0% |
| Jun | 10 | 5 of 10 | +0.46% |
| Jul | 11 | 6 of 11 | +2.7% |
| Aug | 11 | 7 of 11 | +2.3% |
| Sep | 11 | 4 of 11 | −0.25% |
| Oct | 11 | 6 of 11 | +2.0% |
| Nov | 10 | 7 of 10 | +6.2% |
| Dec | 10 | 5 of 10 | −0.83% |
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.