HKEX · 6821 · stock
Asymchem Laboratories (Tianjin) Co., Ltd. (6821) stock price history
Every HKEX trading session of Asymchem Laboratories (Tianjin) Co., Ltd. from Dec 10, 2021 to Nov 12, 2026: 1,190 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.
6821 adjusted close, 2021 to 2026
- HK$240.96
- All time high, 2021
- HK$178.00
- 52 week high, HK$68.25 low
- 1,190
- Daily sessions since 2021
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2021 to 2026 series and minute bars.
6821 key facts
- Asymchem Laboratories (Tianjin) Co., Ltd. (6821) closed at HK$125.50 on Nov 12, 2026 on HKEX.
- 6821's all time high close is HK$240.96, set on Dec 10, 2021; its all time low close is HK$37.85 on Sep 10, 2024.
- 6821's 52 week range is HK$68.25 to HK$178.00.
- 6821 returned +51.0% over the year to Nov 12, 2026.
- Since Dec 10, 2021 6821 returned -48%, -12.4% a year compounded.
- 6821's deepest drawdown was -84.3% from Dec 10, 2021 to Sep 10, 2024.
- DataCedar holds 1,190 daily sessions of 6821 history from Dec 10, 2021 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
6821 price chart, 2021 to 2026
6821 returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -19.6% |
| 3 months | -0.6% |
| 6 months | +23.8% |
| Year to date | +76.1% |
| 1 year | +51.0% |
| 3 years | +25.8% |
| 5 years | n/a |
| 10 years | n/a |
| Since Dec 10, 2021 | -47.9% |
| Compound annual growth, 4.9 years | -12.4% |
6821 records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- HK$240.96 on Dec 10, 2021
- All time low close
- HK$37.85 on Sep 10, 2024
- 52 week high
- HK$178.00 on Sep 17, 2026
- 52 week low
- HK$68.25 on Mar 23, 2026
- Deepest drawdown
- -84.3% from Dec 10, 2021 to Sep 10, 2024, not yet recovered
- Best single session
- +16.8% on Jan 16, 2023
- Worst single session
- -23.5% on Apr 7, 2025
- Volatility, 1 year annualised
- 66.3%
- Sessions closing higher, 1 year
- 47%
- Best calendar year
- 2025, +41%
- Worst calendar year
- 2022, -50%
6821 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. 2021 starts on Dec 10, 2021; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | HK$70.38 | HK$178.00 | HK$68.25 | HK$125.50 | +78.6% | 153.5M | 208 |
| 2025 | HK$49.88 | HK$115.01 | HK$38.77 | HK$70.28 | +40.6% | 157.6M | 243 |
| 2024 | HK$84.30 | HK$85.19 | HK$36.49 | HK$49.98 | -41.3% | 67.9M | 241 |
| 2023 | HK$105.14 | HK$129.06 | HK$80.79 | HK$85.15 | -19.1% | 56.2M | 240 |
| 2022 | HK$206.44 | HK$217.39 | HK$73.65 | HK$105.23 | -49.6% | 51.8M | 243 |
| 2021 | HK$252.68 | HK$252.68 | HK$190.55 | HK$208.66 | n/a | 8.4M | 15 |
6821 monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | HK$125.50 | +20.8% |
| October 2026 | HK$103.90 | -39.0% |
| September 2026 | HK$170.40 | +40.1% |
| August 2026 | HK$121.60 | +9.3% |
| July 2026 | HK$111.30 | +2.3% |
| June 2026 | HK$108.80 | +19.9% |
| May 2026 | HK$90.74 | -12.7% |
| April 2026 | HK$103.96 | +15.8% |
| March 2026 | HK$89.76 | +15.9% |
| February 2026 | HK$77.43 | -3.6% |
| January 2026 | HK$80.34 | +14.3% |
| December 2025 | HK$70.28 | -10.4% |
About the 6821 data
Daily bars. 1,190 sessions from Dec 10, 2021 to Nov 12, 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 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 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 Dec 10, 2021, 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/hkex%3A6821/bars?timeframe=1Day&adjustment=all&limit=50000" \
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Common questions
6821 share price history
