JPX · 3804 · stock
System D Inc. (3804) stock price history
Every JPX trading session of System D Inc. from Apr 27, 2006 to Sep 28, 2026: 5,022 daily bars, adjusted for splits and dividends, with minute bars from Sep 14, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
3804 adjusted close, 2006 to 2026
- ¥796.42
- All time high, 2025
- ¥705.29
- 52 week high, ¥407.00 low
- 5,022
- Daily sessions since 2006
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2006 to 2026 series and minute bars.
3804 key facts
- System D Inc. (3804) closed at ¥445.00 on Sep 28, 2026 on JPX.
- 3804's all time high close is ¥796.42, set on Sep 16, 2025; its all time low close is ¥18.39 on Dec 16, 2008.
- 3804's 52 week range is ¥407.00 to ¥705.29.
- 3804 returned -31.9% over the year to Sep 28, 2026 and +9.0% over five years.
- Over ten years 3804 returned +408%, +17.7% a year compounded.
- 3804's deepest drawdown was -94.6% from Apr 27, 2006 to Dec 16, 2008.
- DataCedar holds 5,022 daily sessions of 3804 history from Apr 27, 2006 and minute bars from Sep 14, 2026, adjusted for splits and dividends, served by the API under a key.
3804 price chart, 2006 to 2026
3804 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -2.6% |
| 3 months | +6.2% |
| 6 months | -22.7% |
| Year to date | -23.3% |
| 1 year | -31.9% |
| 3 years | -0.4% |
| 5 years | +9.0% |
| 10 years | +408.2% |
| Since Apr 27, 2006 | +30.1% |
| Compound annual growth, 20.4 years | +1.3% |
3804 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥796.42 on Sep 16, 2025
- All time low close
- ¥18.39 on Dec 16, 2008
- 52 week high
- ¥705.29 on Oct 22, 2025
- 52 week low
- ¥407.00 on Jun 29, 2026
- Deepest drawdown
- -94.6% from Apr 27, 2006 to Dec 16, 2008, recovered Dec 27, 2019
- Best single session
- +38.5% on Oct 22, 2010
- Worst single session
- -40.2% on Mar 15, 2011
- Volatility, 1 year annualised
- 37.2%
- Sessions closing higher, 1 year
- 43%
- Best calendar year
- 2013, +362%
- Worst calendar year
- 2008, -57%
3804 price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2006 starts on Apr 27, 2006; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥576.00 | ¥642.00 | ¥407.00 | ¥445.00 | -23.3% | 928K | 178 |
| 2025 | ¥482.26 | ¥823.39 | ¥447.39 | ¥580.33 | +22.0% | 2.2M | 243 |
| 2024 | ¥431.38 | ¥494.39 | ¥352.54 | ¥475.68 | +10.3% | 2.7M | 245 |
| 2023 | ¥460.57 | ¥469.19 | ¥397.04 | ¥431.38 | -6.3% | 2.3M | 246 |
| 2022 | ¥408.08 | ¥485.03 | ¥313.74 | ¥460.57 | +10.8% | 11M | 244 |
| 2021 | ¥488.43 | ¥542.35 | ¥361.07 | ¥415.60 | -14.2% | 26.7M | 245 |
| 2020 | ¥350.62 | ¥693.53 | ¥195.95 | ¥484.40 | +34.1% | 54.7M | 242 |
| 2019 | ¥149.15 | ¥396.52 | ¥143.99 | ¥361.09 | +129.0% | 47.9M | 241 |
| 2018 | ¥147.27 | ¥299.05 | ¥144.60 | ¥157.66 | +7.1% | 59.1M | 261 |
| 2017 | ¥91.26 | ¥206.53 | ¥87.24 | ¥147.27 | +61.9% | 70.7M | 253 |
| 2016 | ¥85.79 | ¥122.98 | ¥63.71 | ¥90.96 | +6.0% | 26.7M | 245 |
| 2015 | ¥78.08 | ¥148.80 | ¥72.93 | ¥85.79 | +10.5% | 36.2M | 244 |
| 2014 | ¥123.80 | ¥141.97 | ¥55.67 | ¥77.64 | -45.9% | 58.2M | 244 |
| 2013 | ¥31.35 | ¥151.49 | ¥30.62 | ¥143.58 | +362.3% | 66M | 245 |
| 2012 | ¥24.91 | ¥47.24 | ¥24.48 | ¥31.06 | +24.7% | 26M | 248 |
| 2011 | ¥40.92 | ¥57.00 | ¥23.00 | ¥24.91 | -38.9% | 16.2M | 245 |
| 2010 | ¥23.41 | ¥58.24 | ¥20.06 | ¥40.78 | +72.1% | 35.9M | 243 |
| 2009 | ¥23.83 | ¥31.35 | ¥19.65 | ¥23.69 | 0.0% | 3.8M | 243 |
| 2008 | ¥55.46 | ¥56.15 | ¥17.00 | ¥23.69 | -56.7% | 5.8M | 245 |
| 2007 | ¥110.55 | ¥119.72 | ¥51.69 | ¥54.76 | -50.0% | 9.6M | 245 |
| 2006 | ¥396.77 | ¥437.82 | ¥105.35 | ¥109.45 | n/a | 64.2M | 177 |
3804 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | ¥445.00 | -3.1% |
| August 2026 | ¥459.00 | +1.5% |
| July 2026 | ¥452.00 | +6.1% |
| June 2026 | ¥426.00 | -8.6% |
| May 2026 | ¥466.00 | -16.9% |
| April 2026 | ¥561.00 | +2.6% |
| March 2026 | ¥546.67 | +2.2% |
| February 2026 | ¥534.67 | -5.7% |
| January 2026 | ¥567.00 | -2.3% |
| December 2025 | ¥580.33 | -13.0% |
| November 2025 | ¥666.67 | +2.5% |
| October 2025 | ¥650.33 | -0.5% |
About the 3804 data
Daily bars. 5,022 sessions from Apr 27, 2006 to Sep 28, 2026, one row per JPX trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Sep 14, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are JPX trading days; minute timestamps are UTC. Prices are in JPY. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Apr 27, 2006, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/3804/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
3804 share price history
