SIMOSilicon Motion Technology Corporation
What is the market doing?
No clear lean: nothing decisive, though in an uptrend.
In an uptrend, above its rising 50- and 200-day averages. Price is +37% vs its 200-day average.
Lightly shorted, settled Sep 15, 2026, a few days of normal trading to cover. Up 20% since the previous count, up from 0.7% of shares outstanding three months ago.
Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.
How SIMO is trading
Silicon Motion Technology Corporation is +189% over the past year while the S&P 500 is +18%: 171 points ahead of the market.
1-year return · S&P 500 +18%
- vs 200-day average
- +37%
vs 200-day average · a clear uptrend
- RSI (14)
- 47
RSI (14) · neutral
- Below its 52-week high
- 22%
Below its 52-week high
Details›
- Last close2026-10-09
- $263.89
- 1 monthS&P 500 +2.7%
- −0.49%
- 1 yearS&P 500 +18%
- +189%
- 5 yearsS&P 500 +88%
- +289%
- vs 50-day average$259.07
- +1.9%
- 52-week high
- $336.90
- 52-week low
- $79.69
- Annualised volatility
- 67%
- Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
- −$1.9M
| Year | Return |
|---|---|
| 2026 (year to date) | +186% |
| 2025 | +77% |
| 2024 | −8.9% |
| 2023 | −4.9% |
| 2022 | −30% |
| 2021 | +102% |
| 2020 | −1.8% |
| 2019 | +52% |
| 2018 | −33% |
| 2017 | +27% |
| Month | Years | Positive | Average |
|---|---|---|---|
| Jan | 10 | 5 of 10 | +0.58% |
| Feb | 10 | 7 of 10 | +3.1% |
| Mar | 10 | 3 of 10 | −1.2% |
| Apr | 10 | 5 of 10 | +13% |
| May | 10 | 8 of 10 | +8.6% |
| Jun | 10 | 7 of 10 | +7.7% |
| Jul | 11 | 5 of 11 | −7.0% |
| Aug | 11 | 5 of 11 | −1.1% |
| Sep | 11 | 5 of 11 | +0.70% |
| Oct | 11 | 5 of 11 | −5.1% |
| Nov | 10 | 6 of 10 | +4.7% |
| Dec | 10 | 8 of 10 | +7.8% |
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.