JPX · 6668 · stock
Adtec Plasma Technology Co., Ltd. (6668) stock price history
Every JPX trading session of Adtec Plasma Technology Co., Ltd. from Jul 26, 2004 to Sep 28, 2026: 5,480 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.
6668 adjusted close, 2004 to 2026
- ¥4,360
- All time high, 2026
- ¥4,530
- 52 week high, ¥1,147 low
- 5,480
- Daily sessions since 2004
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2004 to 2026 series and minute bars.
6668 key facts
- Adtec Plasma Technology Co., Ltd. (6668) closed at ¥4,360 on Sep 28, 2026 on JPX.
- 6668's all time high close is ¥4,360, set on Sep 28, 2026; its all time low close is ¥63.74 on Mar 13, 2009.
- 6668's 52 week range is ¥1,147 to ¥4,530.
- 6668 returned +186.3% over the year to Sep 28, 2026 and +192.2% over five years.
- Over ten years 6668 returned +1,003%, +27.1% a year compounded.
- 6668's deepest drawdown was -96.0% from Jul 26, 2004 to Mar 13, 2009.
- DataCedar holds 5,480 daily sessions of 6668 history from Jul 26, 2004 and minute bars from Sep 14, 2026, adjusted for splits and dividends, served by the API under a key.
6668 price chart, 2004 to 2026
6668 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +4.3% |
| 3 months | +4.8% |
| 6 months | +140.9% |
| Year to date | +250.5% |
| 1 year | +186.3% |
| 3 years | +178.6% |
| 5 years | +192.2% |
| 10 years | +1,003% |
| Since Jul 26, 2004 | +172.9% |
| Compound annual growth, 22.2 years | +4.6% |
6668 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥4,360 on Sep 28, 2026
- All time low close
- ¥63.74 on Mar 13, 2009
- 52 week high
- ¥4,530 on Sep 28, 2026
- 52 week low
- ¥1,147 on Nov 5, 2025
- Deepest drawdown
- -96.0% from Jul 26, 2004 to Mar 13, 2009, recovered Jul 14, 2014
- Best single session
- +28.2% on Apr 12, 2013
- Worst single session
- -31.1% on Jan 18, 2005
- Volatility, 1 year annualised
- 73.3%
- Sessions closing higher, 1 year
- 54%
- Growth of 1 since 2004
- 2.7×
- Best calendar year
- 2014, +665%
- Worst calendar year
- 2008, -71%
6668 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. 2004 starts on Jul 26, 2004; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥1,252 | ¥4,530 | ¥1,251 | ¥4,360 | +250.5% | 20M | 178 |
| 2025 | ¥1,213 | ¥1,557 | ¥977.26 | ¥1,244 | +3.0% | 19M | 243 |
| 2024 | ¥1,726 | ¥2,119 | ¥1,147 | ¥1,208 | -31.2% | 18.1M | 245 |
| 2023 | ¥1,478 | ¥1,760 | ¥1,208 | ¥1,755 | +17.0% | 23.5M | 246 |
| 2022 | ¥2,740 | ¥3,133 | ¥1,260 | ¥1,500 | -44.3% | 50M | 244 |
| 2021 | ¥1,171 | ¥2,785 | ¥1,137 | ¥2,693 | +129.9% | 32.3M | 245 |
| 2020 | ¥1,483 | ¥1,882 | ¥931.40 | ¥1,171 | -22.6% | 25M | 242 |
| 2019 | ¥682.98 | ¥1,519 | ¥554.76 | ¥1,513 | +111.3% | 28.2M | 241 |
| 2018 | ¥1,746 | ¥2,142 | ¥603.22 | ¥715.98 | -59.0% | 33.7M | 261 |
| 2017 | ¥831.33 | ¥1,991 | ¥796.80 | ¥1,746 | +113.5% | 69.6M | 253 |
| 2016 | ¥536.82 | ¥898.56 | ¥296.74 | ¥817.70 | +52.3% | 34.5M | 245 |
| 2015 | ¥1,167 | ¥1,605 | ¥479.28 | ¥536.82 | -53.7% | 24.2M | 244 |
| 2014 | ¥155.92 | ¥3,108 | ¥143.98 | ¥1,159 | +665.5% | 208.4M | 244 |
| 2013 | ¥86.28 | ¥195.90 | ¥86.19 | ¥151.37 | +74.5% | 6.5M | 245 |
| 2012 | ¥87.53 | ¥139.86 | ¥76.13 | ¥86.73 | -0.9% | 3.6M | 248 |
| 2011 | ¥118.80 | ¥259.98 | ¥84.47 | ¥87.53 | -27.9% | 9.1M | 245 |
| 2010 | ¥84.12 | ¥152.19 | ¥70.76 | ¥121.41 | +53.0% | 2.4M | 243 |
| 2009 | ¥83.25 | ¥146.55 | ¥63.74 | ¥79.35 | -4.7% | 2.1M | 243 |
| 2008 | ¥283.85 | ¥309.58 | ¥70.68 | ¥83.25 | -71.2% | 1.3M | 245 |
| 2007 | ¥434.66 | ¥561.40 | ¥252.12 | ¥288.99 | -33.4% | 2.3M | 245 |
| 2006 | ¥466.13 | ¥592.87 | ¥293.46 | ¥433.81 | -6.9% | 4.8M | 260 |
| 2005 | ¥843.21 | ¥1,076 | ¥409.99 | ¥466.13 | -44.7% | 9.6M | 260 |
| 2004 | ¥1,598 | ¥1,843 | ¥705.07 | ¥843.21 | n/a | 17.9M | 115 |
6668 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | ¥4,360 | +2.8% |
| August 2026 | ¥4,240 | +48.4% |
| July 2026 | ¥2,858 | -28.2% |
| June 2026 | ¥3,982 | +28.4% |
| May 2026 | ¥3,101 | +16.6% |
| April 2026 | ¥2,660 | +54.2% |
| March 2026 | ¥1,725 | -13.1% |
| February 2026 | ¥1,985 | +24.8% |
| January 2026 | ¥1,590 | +27.8% |
| December 2025 | ¥1,244 | -1.4% |
| November 2025 | ¥1,262 | +5.2% |
| October 2025 | ¥1,199 | -18.3% |
About the 6668 data
Daily bars. 5,480 sessions from Jul 26, 2004 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 Jul 26, 2004, 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/6668/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
6668 share price history
