Xetra · QH9 · stock
ADTRAN Holdings, Inc. (QH9) stock price history
Every Xetra trading session of ADTRAN Holdings, Inc. from Feb 15, 2000 to Sep 28, 2026: 6,802 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 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.
QH9 adjusted close, 2000 to 2026
- €5,364
- All time high, 2007
- €17.11
- 52 week high, €6.06 low
- 6,802
- Daily sessions since 2000
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2000 to 2026 series and minute bars.
QH9 key facts
- ADTRAN Holdings, Inc. (QH9) closed at €6.21 on Sep 28, 2026 on Xetra.
- QH9's all time high close is €5,364, set on May 7, 2007; its all time low close is €0.0082 on Feb 15, 2007.
- QH9's 52 week range is €6.06 to €17.11.
- QH9 returned -21.8% over the year to Sep 28, 2026 and -72.2% over five years.
- Over ten years QH9 returned -72%, -12.0% a year compounded.
- QH9's deepest drawdown was -100.0% from May 7, 2007 to Nov 15, 2007.
- DataCedar holds 6,802 daily sessions of QH9 history from Feb 15, 2000 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
QH9 price chart, 2000 to 2026
QH9 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -6.4% |
| 3 months | -46.0% |
| 6 months | -44.4% |
| Year to date | -15.9% |
| 1 year | -21.8% |
| 3 years | -18.8% |
| 5 years | -72.2% |
| 10 years | -72.2% |
| Since Feb 15, 2000 | -89.6% |
| Compound annual growth, 26.6 years | -8.1% |
QH9 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- €5,364 on May 7, 2007
- All time low close
- €0.0082 on Feb 15, 2007
- 52 week high
- €17.11 on May 28, 2026
- 52 week low
- €6.06 on Sep 24, 2026
- Deepest drawdown
- -100.0% from May 7, 2007 to Nov 15, 2007, not yet recovered
- Best single session
- +4,769,900% on Jun 25, 2008
- Worst single session
- -100.0% on Jun 24, 2008
- Volatility, 1 year annualised
- 66.4%
- Sessions closing higher, 1 year
- 51%
- Best calendar year
- 2010, +105%
- Worst calendar year
- 2023, -59%
QH9 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. 2000 starts on Feb 15, 2000; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | €7.48 | €17.11 | €6.06 | €6.21 | -15.9% | 1.5M | 189 |
| 2025 | €7.80 | €11.71 | €6.16 | €7.39 | -5.4% | 1.9M | 253 |
| 2024 | €6.83 | €8.60 | €4.08 | €7.81 | +14.7% | 5.4M | 254 |
| 2023 | €16.76 | €18.99 | €4.61 | €6.81 | -58.5% | 13.3M | 255 |
| 2022 | €22.36 | €24.28 | €15.35 | €16.42 | -26.6% | 6.1M | 257 |
| 2021 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 255 |
| 2020 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 254 |
| 2019 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 251 |
| 2018 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 252 |
| 2017 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 255 |
| 2016 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 255 |
| 2015 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 254 |
| 2014 | €22.36 | €22.36 | €22.36 | €22.36 | 0.0% | 0 | 252 |
| 2013 | €22.27 | €22.36 | €22.27 | €22.36 | +0.4% | 0 | 252 |
| 2012 | €21.93 | €22.27 | €21.93 | €22.27 | +1.6% | 0 | 253 |
| 2011 | €21.59 | €21.93 | €21.59 | €21.93 | +1.6% | 0 | 256 |
| 2010 | €10.53 | €23.86 | €10.53 | €21.59 | +104.9% | 0 | 256 |
| 2009 | €10.53 | €10.53 | €10.53 | €10.53 | 0.0% | 0 | 254 |
| 2008 | €16.58 | €2,951 | €0.0183 | €10.53 | -36.1% | 64.3K | 254 |
| 2007 | €14.06 | €5,364 | €0.0082 | €16.49 | -0.6% | 111.5K | 252 |
| 2006 | €21.53 | €21.53 | €16.58 | €16.58 | -23.0% | 0 | 255 |
| 2005 | €29.31 | €29.31 | €21.53 | €21.53 | -26.6% | 0 | 260 |
| 2004 | €58.63 | €58.63 | €29.31 | €29.31 | -50.0% | 0 | 262 |
| 2003 | €59.54 | €59.54 | €33.71 | €58.63 | -1.5% | 0 | 261 |
| 2002 | €59.54 | €59.54 | €59.54 | €59.54 | 0.0% | 0 | 261 |
| 2001 | €59.54 | €59.54 | €59.54 | €59.54 | 0.0% | 0 | 261 |
| 2000 | €59.54 | €59.54 | €59.54 | €59.54 | n/a | 0 | 229 |
QH9 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | €6.21 | -5.3% |
| August 2026 | €6.56 | -11.2% |
| July 2026 | €7.39 | -38.9% |
| June 2026 | €12.09 | -15.0% |
| May 2026 | €14.21 | -4.7% |
| April 2026 | €14.91 | +39.0% |
| March 2026 | €10.73 | +26.4% |
| February 2026 | €8.49 | +7.2% |
| January 2026 | €7.92 | +7.3% |
| December 2025 | €7.39 | +8.3% |
| November 2025 | €6.82 | -23.8% |
| October 2025 | €8.95 | +12.5% |
About the QH9 data
Daily bars. 6,802 sessions from Feb 15, 2000 to Sep 28, 2026, one row per Xetra 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 17, 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 Xetra trading days; minute timestamps are UTC. Prices are in EUR. 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 Feb 15, 2000, 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/QH9/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Xetra
Common questions
QH9 share price history
