HKEX · 3997 · stock
Telecom Service One Holdings Limited (3997) stock price history
Every HKEX trading session of Telecom Service One Holdings Limited from May 30, 2013 to Sep 28, 2026: 3,285 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.
3997 adjusted close, 2013 to 2026
- HK$7.49
- All time high, 2022
- HK$4.99
- 52 week high, HK$0.5700 low
- 3,285
- Daily sessions since 2013
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2013 to 2026 series and minute bars.
3997 key facts
- Telecom Service One Holdings Limited (3997) closed at HK$1.18 on Sep 28, 2026 on HKEX.
- 3997's all time high close is HK$7.49, set on Sep 14, 2022; its all time low close is HK$0.3286 on Mar 19, 2024.
- 3997's 52 week range is HK$0.5700 to HK$4.99.
- 3997 returned +107.9% over the year to Sep 28, 2026 and +11.2% over five years.
- Over ten years 3997 returned -26%, -3.0% a year compounded.
- 3997's deepest drawdown was -95.6% from Sep 14, 2022 to Mar 19, 2024.
- DataCedar holds 3,285 daily sessions of 3997 history from May 30, 2013 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
3997 price chart, 2013 to 2026
3997 returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -25.5% |
| 3 months | -62.4% |
| 6 months | +30.2% |
| Year to date | +62.3% |
| 1 year | +107.9% |
| 3 years | +157.6% |
| 5 years | +11.2% |
| 10 years | -25.9% |
| Since May 30, 2013 | +55.5% |
| Compound annual growth, 13.3 years | +3.4% |
3997 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- HK$7.49 on Sep 14, 2022
- All time low close
- HK$0.3286 on Mar 19, 2024
- 52 week high
- HK$4.99 on Jul 3, 2026
- 52 week low
- HK$0.5700 on Sep 29, 2025
- Deepest drawdown
- -95.6% from Sep 14, 2022 to Mar 19, 2024, not yet recovered
- Best single session
- +89.4% on Jan 15, 2014
- Worst single session
- -59.7% on Oct 31, 2022
- Volatility, 1 year annualised
- 104.5%
- Sessions closing higher, 1 year
- 31%
- Best calendar year
- 2014, +114%
- Worst calendar year
- 2023, -72%
3997 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. 2013 starts on May 30, 2013; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | HK$0.7400 | HK$4.99 | HK$0.7100 | HK$1.18 | +55.9% | 47.6M | 182 |
| 2025 | HK$0.5619 | HK$0.8525 | HK$0.4650 | HK$0.7600 | +33.0% | 9.1M | 246 |
| 2024 | HK$0.3709 | HK$0.8263 | HK$0.3239 | HK$0.5716 | +54.1% | 13.8M | 246 |
| 2023 | HK$1.31 | HK$1.90 | HK$0.3568 | HK$0.3709 | -71.6% | 83.1M | 243 |
| 2022 | HK$1.16 | HK$7.51 | HK$0.9389 | HK$1.31 | +8.6% | 105.1M | 246 |
| 2021 | HK$0.7724 | HK$1.43 | HK$0.7547 | HK$1.20 | +57.4% | 506K | 247 |
| 2020 | HK$1.37 | HK$1.37 | HK$0.6727 | HK$0.7635 | -37.8% | 844K | 248 |
| 2019 | HK$2.22 | HK$2.32 | HK$0.7879 | HK$1.23 | -47.0% | 2.3M | 246 |
| 2018 | HK$1.62 | HK$2.93 | HK$1.43 | HK$2.32 | +42.7% | 36.8M | 246 |
| 2017 | HK$1.53 | HK$1.83 | HK$1.21 | HK$1.62 | +6.4% | 34.8M | 247 |
| 2016 | HK$1.29 | HK$1.88 | HK$1.14 | HK$1.53 | +18.9% | 16.3M | 247 |
| 2015 | HK$0.9719 | HK$2.26 | HK$0.8799 | HK$1.28 | +26.9% | 53.2M | 247 |
| 2014 | HK$0.4668 | HK$1.99 | HK$0.4560 | HK$1.01 | +114.2% | 110.1M | 247 |
| 2013 | HK$1.88 | HK$1.99 | HK$0.3219 | HK$0.4721 | n/a | 112.5M | 147 |
3997 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | HK$1.18 | -25.5% |
| August 2026 | HK$1.59 | -20.5% |
| July 2026 | HK$2.00 | -39.6% |
| June 2026 | HK$3.31 | +18.6% |
| May 2026 | HK$2.79 | +56.7% |
| April 2026 | HK$1.78 | +109.4% |
| March 2026 | HK$0.8500 | +2.4% |
| February 2026 | HK$0.8300 | +2.5% |
| January 2026 | HK$0.8100 | +6.6% |
| December 2025 | HK$0.7600 | +1.3% |
| November 2025 | HK$0.7500 | +4.2% |
| October 2025 | HK$0.7200 | +14.3% |
About the 3997 data
Daily bars. 3,285 sessions from May 30, 2013 to Sep 28, 2026, one row per HKEX 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 25, 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 HKEX trading days; minute timestamps are UTC. Prices are in HKD. 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 May 30, 2013, 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/3997/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on HKEX
Common questions
3997 share price history
