TWSE · 6438 · stock

Symtek Automation Asia Co., Ltd. (6438) stock price history

Every TWSE trading session of Symtek Automation Asia Co., Ltd. from Nov 25, 2013 to Sep 24, 2026: 3,129 daily bars, adjusted for splits and dividends, with minute bars from Sep 15, 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 6438 data, free keyYear by year table

6438 adjusted close, 2013 to 2026

6438Symtek Automation Asia Co., Ltd.
NT$157.50-7.3% over one year
201620182020202220242026
NT$227.38
All time high, 2025
NT$190.41
52 week high, NT$112.51 low
3,129
Daily sessions since 2013

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2013 to 2026 series and minute bars.

6438 key facts

  • Symtek Automation Asia Co., Ltd. (6438) closed at NT$157.50 on Sep 24, 2026 on TWSE.
  • 6438's all time high close is NT$227.38, set on Feb 7, 2025; its all time low close is NT$23.42 on Jan 22, 2016.
  • 6438's 52 week range is NT$112.51 to NT$190.41.
  • 6438 returned -7.3% over the year to Sep 24, 2026 and +97.2% over five years.
  • Over ten years 6438 returned +514%, +19.9% a year compounded.
  • 6438's deepest drawdown was -52.9% from Dec 18, 2019 to Mar 19, 2020.
  • DataCedar holds 3,129 daily sessions of 6438 history from Nov 25, 2013 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6438 price chart, 2013 to 2026

6438 adjusted close, Nov 25, 2013 to Sep 24, 2026NT$23.90NT$87.59NT$151.28NT$214.972014201620182020202220242026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

6438 returns

Price return from the last close on or before the window start to Sep 24, 2026, on adjusted closes.

PeriodReturn
1 month+9.8%
3 months+3.3%
6 months-6.9%
Year to date+15.7%
1 year-7.3%
3 years+75.7%
5 years+97.2%
10 years+513.7%
Since Nov 25, 2013+555.8%
Compound annual growth, 12.8 years+15.8%

6438 records

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

All time high close
NT$227.38 on Feb 7, 2025
All time low close
NT$23.42 on Jan 22, 2016
52 week high
NT$190.41 on Apr 20, 2026
52 week low
NT$112.51 on Nov 21, 2025
Deepest drawdown
-52.9% from Dec 18, 2019 to Mar 19, 2020, recovered Dec 1, 2020
Best single session
+12.7% on Apr 7, 2021
Worst single session
-14.1% on Mar 16, 2020
Volatility, 1 year annualised
42.2%
Sessions closing higher, 1 year
46%
Growth of 1 since 2013
6.6×
Best calendar year
2024, +104%
Worst calendar year
2025, -31%

6438 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 Nov 25, 2013; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$136.64NT$190.41NT$126.00NT$157.50+16.1%274.2M178
2025NT$199.41NT$237.29NT$112.51NT$135.65-31.0%637.2M242
2024NT$96.62NT$225.32NT$91.73NT$196.56+104.4%635.4M242
2023NT$71.73NT$110.69NT$71.73NT$96.16+33.9%232.1M239
2022NT$93.45NT$107.43NT$61.68NT$71.82-22.1%319.5M246
2021NT$63.14NT$99.84NT$60.83NT$92.25+47.9%436.1M243
2020NT$58.84NT$72.53NT$29.98NT$62.37+6.8%515.3M245
2019NT$44.93NT$64.66NT$33.97NT$58.38+35.5%362.1M241
2018NT$50.29NT$62.47NT$27.74NT$43.09-13.6%178.3M245
2017NT$33.62NT$59.69NT$31.29NT$49.89+56.3%285.9M243
2016NT$27.65NT$33.20NT$23.32NT$31.91+13.2%18.2M244
2015NT$31.92NT$34.60NT$25.26NT$28.20-11.3%26.4M246
2014NT$28.97NT$40.38NT$28.72NT$31.78+9.6%35.6M248
2013NT$24.01NT$30.95NT$23.33NT$28.99n/a1.9M27

6438 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$157.50+6.1%
August 2026NT$148.50+10.8%
July 2026NT$134.00-14.9%
June 2026NT$157.50-8.8%
May 2026NT$172.65-0.6%
April 2026NT$173.64+5.4%
March 2026NT$164.76+10.2%
February 2026NT$149.47+3.1%
January 2026NT$145.03+6.9%
December 2025NT$135.65+5.2%
November 2025NT$128.93-15.2%
October 2025NT$152.10-11.0%

About the 6438 data

Daily bars. 3,129 sessions from Nov 25, 2013 to Sep 24, 2026, one row per TWSE 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 15, 2026 forward, most recent session Sep 29, 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 TWSE trading days; minute timestamps are UTC. Prices are in TWD. 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 Nov 25, 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/6438/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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