JPX · 4719 · stock
Alpha Systems Inc. (4719) stock price history
Every JPX trading session of Alpha Systems Inc. from Jan 4, 2001 to Sep 28, 2026: 6,407 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.
4719 adjusted close, 2001 to 2026
- ¥6,298
- All time high, 2001
- ¥4,147
- 52 week high, ¥3,055 low
- 6,407
- Daily sessions since 2001
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2001 to 2026 series and minute bars.
4719 key facts
- Alpha Systems Inc. (4719) closed at ¥3,290 on Sep 28, 2026 on JPX.
- 4719's all time high close is ¥6,298, set on Jan 25, 2001; its all time low close is ¥421.21 on Oct 3, 2002.
- 4719's 52 week range is ¥3,055 to ¥4,147.
- 4719 returned -12.6% over the year to Sep 28, 2026 and -14.7% over five years.
- Over ten years 4719 returned +153%, +9.7% a year compounded.
- 4719's deepest drawdown was -93.3% from Jan 25, 2001 to Oct 3, 2002.
- DataCedar holds 6,407 daily sessions of 4719 history from Jan 4, 2001 and minute bars from Sep 14, 2026, adjusted for splits and dividends, served by the API under a key.
4719 price chart, 2001 to 2026
4719 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -3.4% |
| 3 months | +0.3% |
| 6 months | -1.6% |
| Year to date | -16.7% |
| 1 year | -12.6% |
| 3 years | +26.9% |
| 5 years | -14.7% |
| 10 years | +152.7% |
| Since Jan 4, 2001 | -41.5% |
| Compound annual growth, 25.7 years | -2.1% |
4719 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥6,298 on Jan 25, 2001
- All time low close
- ¥421.21 on Oct 3, 2002
- 52 week high
- ¥4,147 on Dec 26, 2025
- 52 week low
- ¥3,055 on Jun 12, 2026
- Deepest drawdown
- -93.3% from Jan 25, 2001 to Oct 3, 2002, not yet recovered
- Best single session
- +19.7% on Oct 15, 2002
- Worst single session
- -36.8% on Feb 27, 2002
- Volatility, 1 year annualised
- 26.7%
- Sessions closing higher, 1 year
- 46%
- Best calendar year
- 2005, +105%
- Worst calendar year
- 2002, -80%
4719 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. 2001 starts on Jan 4, 2001; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥3,986 | ¥4,064 | ¥3,055 | ¥3,290 | -16.7% | 1.9M | 178 |
| 2025 | ¥3,205 | ¥4,147 | ¥2,697 | ¥3,951 | +24.6% | 2.1M | 243 |
| 2024 | ¥2,736 | ¥3,379 | ¥2,248 | ¥3,172 | +15.2% | 3.1M | 245 |
| 2023 | ¥3,656 | ¥3,936 | ¥2,407 | ¥2,754 | -25.2% | 4.2M | 246 |
| 2022 | ¥3,510 | ¥4,458 | ¥3,069 | ¥3,682 | +4.5% | 1.8M | 244 |
| 2021 | ¥3,010 | ¥3,967 | ¥2,976 | ¥3,523 | +16.9% | 1.9M | 245 |
| 2020 | ¥2,361 | ¥3,714 | ¥1,854 | ¥3,015 | +25.9% | 3.7M | 242 |
| 2019 | ¥2,068 | ¥2,546 | ¥2,000 | ¥2,395 | +15.4% | 3.3M | 241 |
| 2018 | ¥1,993 | ¥2,492 | ¥1,657 | ¥2,075 | +4.1% | 2.6M | 261 |
| 2017 | ¥1,485 | ¥2,137 | ¥1,450 | ¥1,993 | +36.0% | 2M | 253 |
| 2016 | ¥1,491 | ¥1,541 | ¥1,163 | ¥1,466 | -2.1% | 1.7M | 245 |
| 2015 | ¥1,261 | ¥1,604 | ¥1,127 | ¥1,497 | +20.7% | 2.8M | 244 |
| 2014 | ¥1,079 | ¥1,291 | ¥880.08 | ¥1,241 | +14.8% | 2.8M | 244 |
| 2013 | ¥785.06 | ¥1,098 | ¥709.30 | ¥1,081 | +40.9% | 3.1M | 245 |
| 2012 | ¥664.87 | ¥832.53 | ¥644.48 | ¥767.51 | +14.9% | 2M | 248 |
| 2011 | ¥810.84 | ¥893.62 | ¥549.34 | ¥668.26 | -17.1% | 4.5M | 245 |
| 2010 | ¥923.87 | ¥1,049 | ¥763.14 | ¥805.90 | -12.8% | 5.2M | 243 |
| 2009 | ¥1,203 | ¥1,203 | ¥793.45 | ¥923.87 | -24.5% | 5.4M | 243 |
| 2008 | ¥1,193 | ¥1,754 | ¥763.63 | ¥1,224 | +1.1% | 10.2M | 245 |
| 2007 | ¥1,841 | ¥2,110 | ¥1,128 | ¥1,210 | -33.3% | 9.2M | 245 |
| 2006 | ¥1,840 | ¥2,018 | ¥1,411 | ¥1,815 | -1.3% | 12.8M | 260 |
| 2005 | ¥899.54 | ¥1,956 | ¥860.90 | ¥1,840 | +104.5% | 11M | 260 |
| 2004 | ¥995.14 | ¥1,142 | ¥756.05 | ¥899.54 | -9.6% | 6.1M | 262 |
| 2003 | ¥545.96 | ¥1,588 | ¥438.34 | ¥995.14 | +82.3% | 8.5M | 261 |
| 2002 | ¥2,783 | ¥2,841 | ¥409.96 | ¥545.96 | -80.4% | 11.8M | 261 |
| 2001 | ¥6,010 | ¥6,467 | ¥1,640 | ¥2,783 | n/a | 6.4M | 258 |
4719 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | ¥3,290 | -4.6% |
| August 2026 | ¥3,450 | +4.5% |
| July 2026 | ¥3,300 | 0.0% |
| June 2026 | ¥3,300 | +1.5% |
| May 2026 | ¥3,250 | -1.8% |
| April 2026 | ¥3,310 | -1.5% |
| March 2026 | ¥3,360 | -7.4% |
| February 2026 | ¥3,629 | -2.0% |
| January 2026 | ¥3,702 | -6.3% |
| December 2025 | ¥3,951 | -2.8% |
| November 2025 | ¥4,064 | +14.9% |
| October 2025 | ¥3,536 | -4.4% |
About the 4719 data
Daily bars. 6,407 sessions from Jan 4, 2001 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 29, 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 Jan 4, 2001, 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/4719/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
4719 share price history
