TWSE · 6443 · stock

TSEC Corporation (6443) stock price history

Every TWSE trading session of TSEC Corporation from Sep 19, 2014 to Sep 24, 2026: 2,927 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 6443 data, free keyYear by year table

6443 adjusted close, 2014 to 2026

6443TSEC Corporation
NT$28.25+85.2% over one year
201620182020202220242026
NT$52.30
All time high, 2026
NT$56.50
52 week high, NT$11.95 low
2,927
Daily sessions since 2014

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2014 to 2026 series and minute bars.

6443 key facts

  • TSEC Corporation (6443) closed at NT$28.25 on Sep 24, 2026 on TWSE.
  • 6443's all time high close is NT$52.30, set on Mar 11, 2026; its all time low close is NT$3.90 on Mar 23, 2020.
  • 6443's 52 week range is NT$11.95 to NT$56.50.
  • 6443 returned +85.2% over the year to Sep 24, 2026 and +3.4% over five years.
  • Over ten years 6443 returned +84%, +6.3% a year compounded.
  • 6443's deepest drawdown was -87.0% from Sep 19, 2014 to Mar 23, 2020.
  • DataCedar holds 2,927 daily sessions of 6443 history from Sep 19, 2014 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6443 price chart, 2014 to 2026

6443 adjusted close, Sep 19, 2014 to Sep 24, 2026NT$4.73NT$20.15NT$35.58NT$51.002014201620182020202220242026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

6443 returns

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

PeriodReturn
1 month+9.3%
3 months-23.8%
6 months-35.4%
Year to date-1.6%
1 year+85.2%
3 years+1.1%
5 years+3.4%
10 years+83.9%
Since Sep 19, 2014-6.0%
Compound annual growth, 12.0 years-0.5%

6443 records

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

All time high close
NT$52.30 on Mar 11, 2026
All time low close
NT$3.90 on Mar 23, 2020
52 week high
NT$56.50 on Mar 17, 2026
52 week low
NT$11.95 on Nov 24, 2025
Deepest drawdown
-87.0% from Sep 19, 2014 to Mar 23, 2020, recovered Oct 8, 2020
Best single session
+14.3% on Sep 30, 2014
Worst single session
-12.7% on Oct 1, 2015
Volatility, 1 year annualised
64.9%
Sessions closing higher, 1 year
45%
Best calendar year
2020, +470%
Worst calendar year
2016, -38%

6443 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. 2014 starts on Sep 19, 2014; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$28.35NT$56.50NT$22.15NT$28.25+1.3%7.7B178
2025NT$18.20NT$30.00NT$11.95NT$27.90+56.3%1.5B242
2024NT$28.97NT$32.56NT$17.75NT$17.85-38.1%1.7B242
2023NT$33.54NT$40.23NT$26.70NT$28.82-13.9%2.2B239
2022NT$41.59NT$48.58NT$28.77NT$33.49-18.3%7B246
2021NT$40.49NT$47.18NT$25.30NT$40.97+1.8%5.9B243
2020NT$7.19NT$44.15NT$3.90NT$40.24+470.0%4B245
2019NT$8.95NT$9.92NT$6.76NT$7.06-21.1%441.9M241
2018NT$14.19NT$15.77NT$6.41NT$8.95-36.6%346.5M245
2017NT$14.13NT$18.94NT$12.30NT$14.12-0.1%708.9M243
2016NT$23.03NT$24.84NT$12.02NT$14.13-38.3%477.7M244
2015NT$21.36NT$30.16NT$17.09NT$22.90+7.2%175.4M246
2014NT$30.04NT$30.71NT$21.36NT$21.36n/a239.7M73

6443 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$28.25+8.7%
August 2026NT$26.00+9.5%
July 2026NT$23.75-33.0%
June 2026NT$35.45-12.9%
May 2026NT$40.70+15.1%
April 2026NT$35.35-13.5%
March 2026NT$40.85-9.4%
February 2026NT$45.10+15.6%
January 2026NT$39.00+39.8%
December 2025NT$27.90+108.2%
November 2025NT$13.40-4.6%
October 2025NT$14.05-7.0%

About the 6443 data

Daily bars. 2,927 sessions from Sep 19, 2014 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 Sep 19, 2014, 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/6443/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

Nearby on TWSE

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  • 6438 Symtek Automation Asia Co., Ltd.
  • 6442 EZconn Corporation
  • 6446 PharmaEssentia Corporation
  • 6449 Apaq Technology Co., Ltd.
  • 6451 ShunSin Technology Holdings Limited
  • 6456 General Interface Solution (GIS) Holding Limited

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6443 share price history

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