What is the all time high of 0646?

China Environmental Technology Holdings Limited (0646) closed at its highest ever adjusted price, HK$14.20, on Nov 11, 2010. Its lowest close was HK$0.0900 on Jun 18, 2026.

How much has 0646 returned over the last 10 years?

-94.0% in price terms from the close ten years before Nov 12, 2026, which is -24.5% a year compounded. Over one year the return is +42.9%; over five years -32.4%.

What was the worst drawdown in 0646 history?

-99.4% from the Jun 2, 2015 peak to the Jun 18, 2026 trough on adjusted closes; the previous peak has not been regained as of the last stored session.

How far back does 0646 historical data go?

The daily series starts on Mar 28, 2002 and runs to Nov 12, 2026: 5,988 trading sessions across 24.6 years. Minute bars start on Sep 18, 2026 and are captured forward, never backfilled.

Are 0646 historical prices adjusted for splits and dividends?

Yes. The page uses the fully adjusted series, in which every past price is scaled for later splits and cash dividends so returns are comparable across the whole history. The API also serves raw prices, split adjusted only and dividend adjusted only.

How do I get 0646 historical data?

Register for a free key and call the bars endpoint: it returns date, open, high, low, close and volume as JSON, one year back on the free plan and the full series from Mar 28, 2002 on Quant and above. Minute history comes with the paid plans.

What were the best and worst years for 0646?

Among complete calendar years, 2009 was the best at +572.6% and 2008 the worst at -77.7%, measured close to close.

HKEX · 0646 · stock

China Environmental Technology Holdings Limited (0646) stock price history

Every HKEX trading session of China Environmental Technology Holdings Limited from Mar 28, 2002 to Nov 12, 2026: 5,988 daily bars, adjusted for splits and dividends, with minute bars from Sep 18, 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.

Get 0646 data, free key Year by year table

0646 adjusted close, 2002 to 2026

0646China Environmental Technology Holdings

HK$0.2500+42.9% over one year

HK$14.20
All time high, 2010: HK$0.3950
52 week high, HK$0.0900 low: 5,988
Daily sessions since 2002

Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2002 to 2026 series and minute bars.

0646 key facts

China Environmental Technology Holdings Limited (0646) closed at HK$0.2500 on Nov 12, 2026 on HKEX.
0646's all time high close is HK$14.20, set on Nov 11, 2010; its all time low close is HK$0.0900 on Jun 18, 2026.
0646's 52 week range is HK$0.0900 to HK$0.3950.
0646 returned +42.9% over the year to Nov 12, 2026 and -32.4% over five years.
Over ten years 0646 returned -94%, -24.5% a year compounded.
0646's deepest drawdown was -99.4% from Jun 2, 2015 to Jun 18, 2026.
DataCedar holds 5,988 daily sessions of 0646 history from Mar 28, 2002 and minute bars from Sep 18, 2026, adjusted for splits and dividends, served by the API under a key.

0646 price chart, 2002 to 2026

Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

0646 returns

Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.

Period	Return
1 month	+4.2%
3 months	+88.0%
6 months	+123.2%
Year to date	+62.3%
1 year	+42.9%
3 years	-27.5%
5 years	-32.4%
10 years	-94.0%
Since Mar 28, 2002	-89.9%
Compound annual growth, 24.6 years	-8.9%

0646 records

Measured on the stored closes; every figure is reproducible from the API series.

All time high close: HK$14.20 on Nov 11, 2010
All time low close: HK$0.0900 on Jun 18, 2026
52 week high: HK$0.3950 on Sep 8, 2026
52 week low: HK$0.0900 on Jun 18, 2026
Deepest drawdown: -99.4% from Jun 2, 2015 to Jun 18, 2026, not yet recovered
Best single session: +254.2% on Sep 20, 2019
Worst single session: -54.0% on Mar 2, 2009
Volatility, 1 year annualised: 106.7%
Sessions closing higher, 1 year: 22%
Best calendar year: 2009, +573%
Worst calendar year: 2008, -78%

0646 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. 2002 starts on Mar 28, 2002; 2026 runs to Nov 12, 2026.

Year	Open	High	Low	Close	Return	Volume	Sessions
2026	HK$0.1660	HK$0.3950	HK$0.0900	HK$0.2500	+54.3%	82.6M	197
2025	HK$0.2160	HK$0.3000	HK$0.1420	HK$0.1620	-25.0%	8.5M	237
2024	HK$0.2750	HK$0.2950	HK$0.1130	HK$0.2160	-21.5%	4.3M	240
2023	HK$0.6800	HK$0.8500	HK$0.2550	HK$0.2750	-59.6%	4.2M	236
2022	HK$0.8000	HK$0.9100	HK$0.3450	HK$0.6800	-15.0%	30.7M	237
2021	HK$0.3600	HK$1.20	HK$0.2400	HK$0.8000	+122.2%	229.7M	241
2020	HK$0.6200	HK$0.8600	HK$0.2000	HK$0.3600	-43.7%	59.7M	245
2019	HK$1.04	HK$2.64	HK$0.4200	HK$0.6400	-39.6%	207.9M	239
2018	HK$3.16	HK$4.70	HK$0.7400	HK$1.06	-63.9%	104.8M	242
2017	HK$5.40	HK$5.60	HK$2.76	HK$2.94	-45.6%	27.5M	238
2016	HK$3.72	HK$6.60	HK$2.44	HK$5.40	+42.1%	32.9M	237
2015	HK$3.66	HK$15.00	HK$3.30	HK$3.80	+7.3%	138.3M	241
2014	HK$3.42	HK$7.60	HK$3.00	HK$3.54	+3.5%	127.2M	243
2013	HK$3.60	HK$5.60	HK$3.26	HK$3.42	-14.5%	11.4M	244
2012	HK$3.38	HK$4.80	HK$2.00	HK$4.00	+18.3%	5.3M	229
2011	HK$8.80	HK$11.40	HK$2.22	HK$3.38	-62.4%	21.9M	235
2010	HK$7.60	HK$15.20	HK$6.40	HK$9.00	+20.0%	59M	249
2009	HK$1.13	HK$9.90	HK$1.02	HK$7.50	+572.6%	17.2M	249
2008	HK$5.00	HK$5.25	HK$0.8000	HK$1.12	-77.7%	10.9M	247
2007	HK$1.58	HK$8.30	HK$1.55	HK$5.00	+239.0%	57.2M	246
2006	HK$0.7750	HK$2.00	HK$0.7450	HK$1.48	+90.3%	7.4M	247
2005	HK$0.8200	HK$1.09	HK$0.6900	HK$0.7750	-3.1%	3M	247
2004	HK$0.9100	HK$1.58	HK$0.4300	HK$0.8000	-12.1%	4.8M	262
2003	HK$1.17	HK$1.27	HK$0.7800	HK$0.9100	-22.6%	8.8M	261
2002	HK$2.70	HK$3.40	HK$1.05	HK$1.17	n/a	153.5M	199

0646 monthly closes, last 12 months

Month	Month end close	Change
November 2026	HK$0.2500	0.0%
October 2026	HK$0.2500	+2.0%
September 2026	HK$0.2450	+72.5%
August 2026	HK$0.1420	+9.2%
July 2026	HK$0.1300	-0.8%
June 2026	HK$0.1310	+13.9%
May 2026	HK$0.1150	+1.8%
April 2026	HK$0.1130	-25.2%
March 2026	HK$0.1510	-3.2%
February 2026	HK$0.1560	+2.0%
January 2026	HK$0.1530	-5.6%
December 2025	HK$0.1620	-0.6%

About the 0646 data

Daily bars. 5,988 sessions from Mar 28, 2002 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 18, 2026 forward, most recent session Nov 5, 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 Mar 28, 2002, 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%3A0646/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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