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 Nov 13, 2026: 5,502 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
- ¥5,630
- All time high, 2026
- ¥6,070
- 52 week high, ¥1,184 low
- 5,502
- Daily sessions since 2004
Last updated Nov 13, 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 ¥3,945 on Nov 13, 2026 on JPX.
- 6668's all time high close is ¥5,630, set on Oct 13, 2026; its all time low close is ¥63.74 on Mar 13, 2009.
- 6668's 52 week range is ¥1,184 to ¥6,070.
- 6668 returned +215.4% over the year to Nov 13, 2026 and +82.1% over five years.
- Over ten years 6668 returned +464%, +18.9% a year compounded.
- 6668's deepest drawdown was -96.0% from Jul 26, 2004 to Mar 13, 2009.
- DataCedar holds 5,502 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 Nov 13, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -29.9% |
| 3 months | +7.0% |
| 6 months | +21.2% |
| Year to date | +217.1% |
| 1 year | +215.4% |
| 3 years | +183.1% |
| 5 years | +82.1% |
| 10 years | +463.9% |
| Since Jul 26, 2004 | +146.9% |
| Compound annual growth, 22.3 years | +4.1% |
6668 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- ¥5,630 on Oct 13, 2026
- All time low close
- ¥63.74 on Mar 13, 2009
- 52 week high
- ¥6,070 on Oct 14, 2026
- 52 week low
- ¥1,184 on Nov 19, 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
- 78.5%
- Sessions closing higher, 1 year
- 53%
- Growth of 1 since 2004
- 2.5×
- 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 Nov 13, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | ¥1,252 | ¥6,070 | ¥1,251 | ¥3,945 | +217.1% | 28.1M | 206 |
| 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 | 244 |
| 2007 | ¥434.66 | ¥561.40 | ¥252.12 | ¥288.99 | -33.4% | 2.3M | 244 |
| 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 | 258 |
| 2004 | ¥1,598 | ¥1,843 | ¥705.07 | ¥843.21 | n/a | 17.9M | 113 |
6668 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | ¥3,945 | -12.6% |
| October 2026 | ¥4,515 | +2.5% |
| September 2026 | ¥4,405 | +3.9% |
| 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% |
About the 6668 data
Daily bars. 5,502 sessions from Jul 26, 2004 to Nov 13, 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 Oct 23, 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/jpx%3A6668/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on JPX
Common questions
6668 share price history
