NASDAQ · TECHNOLOGY · Historical Data
Silicon Motion Technology historical OHLCV data.
Daily SIMO open, high, low, close, and volume bars. Split-adjusted closes by default; return, range, and realised volatility are computed from the same series.
- 1-year return
- +337.03%
- First close → last close
- Range high
- $294.00
- Range low
- $60.10
- Realised vol (annualised)
- 62%
- σ of daily log returns × √252
Trend read
Trading near the 52-week high.
SIMO sits in the top 6% of its 52-week range. Stocks holding above the upper band of their range tend to attract trend-followers; the cleanest signal here is whether realised vol is rising with price (continuation) or compressing (consolidation).
Last 30 sessions
| Date | High | Low | Close | Return | Volume |
|---|---|---|---|---|---|
| 2026-05-27 | $287.95 | $268.10 | $279.25 | -3.81% | 559,764 |
| 2026-05-26 | $294.00 | $276.20 | $290.32 | +5.14% | 1,850,200 |
| 2026-05-22 | $278.50 | $263.99 | $276.14 | +4.79% | 800,100 |
| 2026-05-21 | $265.12 | $252.51 | $263.51 | +2.13% | 626,400 |
| 2026-05-20 | $258.31 | $246.60 | $258.02 | +2.02% | 944,000 |
| 2026-05-19 | $261.34 | $230.05 | $252.92 | +5.49% | 2,053,200 |
| 2026-05-18 | $267.00 | $235.00 | $239.76 | -7.78% | 1,183,600 |
| 2026-05-15 | $265.50 | $250.93 | $259.99 | -1.46% | 771,800 |
| 2026-05-14 | $273.25 | $263.10 | $263.85 | -2.23% | 794,500 |
| 2026-05-13 | $273.90 | $252.51 | $269.87 | +4.31% | 875,800 |
| 2026-05-12 | $259.49 | $243.79 | $258.71 | -1.27% | 1,036,600 |
| 2026-05-11 | $272.00 | $255.44 | $262.05 | +3.34% | 1,778,200 |
| 2026-05-08 | $254.84 | $238.52 | $253.59 | +4.48% | 1,010,800 |
| 2026-05-07 | $251.71 | $236.11 | $242.71 | -0.71% | 1,180,900 |
| 2026-05-06 | $245.50 | $228.82 | $244.45 | +2.74% | 1,309,900 |
| 2026-05-05 | $248.59 | $223.03 | $237.92 | +4.95% | 2,104,400 |
| 2026-05-04 | $243.89 | $222.20 | $226.70 | -3.14% | 1,253,900 |
| 2026-05-01 | $235.00 | $210.00 | $234.04 | +7.19% | 1,412,700 |
| 2026-04-30 | $229.32 | $198.40 | $218.33 | +0.59% | 1,893,800 |
| 2026-04-29 | $217.98 | $192.80 | $217.06 | +45.80% | 4,374,100 |
| 2026-04-28 | $152.66 | $140.22 | $148.88 | +1.11% | 1,310,600 |
| 2026-04-27 | $155.73 | $145.18 | $147.24 | -3.86% | 907,400 |
| 2026-04-24 | $153.79 | $142.00 | $153.15 | +8.07% | 748,000 |
| 2026-04-23 | $147.60 | $139.18 | $141.71 | +0.04% | 589,300 |
| 2026-04-22 | $146.15 | $140.23 | $141.66 | -0.35% | 377,500 |
| 2026-04-21 | $143.50 | $138.51 | $142.16 | +2.70% | 530,100 |
| 2026-04-20 | $141.93 | $137.25 | $138.42 | -0.72% | 441,600 |
| 2026-04-17 | $145.82 | $137.63 | $139.42 | +1.98% | 845,800 |
| 2026-04-16 | $139.04 | $133.35 | $136.72 | -1.46% | 526,000 |
| 2026-04-15 | $139.50 | $128.51 | $138.75 | +6.82% | 1,137,900 |
Showing the most recent 30 sessions. Total 254 bars available.
Frequently asked
Common questions.
Are SIMO historical prices split-adjusted on TECHi?
Yes — TECHi applies universal split adjustment across the entire history (including the IPO close and all-time high/low calculations). This is why long-term CAGR and performance numbers stay accurate instead of showing the bogus pre-split prices you sometimes see elsewhere.
How does TECHi calculate total return and realized volatility for SIMO?
Total return columns back out actual dividend reinvestment. Realized vol is annualised 30-day rolling log-return stdev × √252. These are the clean, documented series that power Forward model inputs and honest backtests — not black-box vendor numbers.
Why does SIMO historical data on TECHi look different from other sites around splits or dividends?
Many platforms serve unadjusted or partially adjusted series that break long-term charts and CAGR. TECHi normalises the full history once using the verified split list, then derives every derived metric (CAGR, all-time high/low, progress windows) from that single source of truth.
Can I export SIMO historical data for backtesting?
The page renders the full OHLCV table with return and total-return columns. Export buttons (CSV) are available on the companion financial statements pages; the same disciplined data layer underlies everything.
How far back does the SIMO history go?
TECHi defaults to one year of daily bars for speed. The underlying feed reaches to Silicon Motion Technology’s IPO. MAX on the Chart page loads the complete adjusted series for long-horizon analysis.