TWSE · 6641 · stock

GSD Technologies Co., Ltd. (6641) stock price history

Every TWSE trading session of GSD Technologies Co., Ltd. from Sep 21, 2018 to Sep 24, 2026: 1,945 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 6641 data, free keyYear by year table

6641 adjusted close, 2018 to 2026

6641GSD Technologies Co., Ltd.
NT$16.95-13.0% over one year
2020202220242026
NT$55.56
All time high, 2021
NT$27.71
52 week high, NT$16.55 low
1,945
Daily sessions since 2018

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2018 to 2026 series and minute bars.

6641 key facts

  • GSD Technologies Co., Ltd. (6641) closed at NT$16.95 on Sep 24, 2026 on TWSE.
  • 6641's all time high close is NT$55.56, set on Apr 14, 2021; its all time low close is NT$16.75 on Sep 23, 2026.
  • 6641's 52 week range is NT$16.55 to NT$27.71.
  • 6641 returned -13.0% over the year to Sep 24, 2026 and -63.7% over five years.
  • Since Sep 21, 2018 6641 returned -68%, -13.4% a year compounded.
  • 6641's deepest drawdown was -69.9% from Apr 14, 2021 to Sep 23, 2026.
  • DataCedar holds 1,945 daily sessions of 6641 history from Sep 21, 2018 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6641 price chart, 2018 to 2026

6641 adjusted close, Sep 21, 2018 to Sep 24, 2026NT$16.90NT$29.67NT$42.43NT$55.20201820192020202120222023202420252026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

6641 returns

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

PeriodReturn
1 month-5.8%
3 months-5.1%
6 months-6.7%
Year to date-9.6%
1 year-13.0%
3 years-57.7%
5 years-63.7%
10 yearsn/a
Since Sep 21, 2018-68.4%
Compound annual growth, 8.0 years-13.4%

6641 records

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

All time high close
NT$55.56 on Apr 14, 2021
All time low close
NT$16.75 on Sep 23, 2026
52 week high
NT$27.71 on Jan 15, 2026
52 week low
NT$16.55 on Jul 29, 2026
Deepest drawdown
-69.9% from Apr 14, 2021 to Sep 23, 2026, not yet recovered
Best single session
+10.0% on Mar 20, 2020
Worst single session
-9.9% on Apr 7, 2025
Volatility, 1 year annualised
33.4%
Sessions closing higher, 1 year
38%
Best calendar year
2019, +18%
Worst calendar year
2025, -37%

6641 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. 2018 starts on Sep 21, 2018; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$18.80NT$27.71NT$16.55NT$16.95-9.1%14.4M178
2025NT$29.26NT$29.26NT$18.60NT$18.65-37.5%5M242
2024NT$40.20NT$41.39NT$29.07NT$29.82-25.3%4.3M242
2023NT$45.39NT$50.77NT$36.73NT$39.93-11.9%3.4M239
2022NT$48.46NT$51.63NT$42.83NT$45.30-7.4%2.7M246
2021NT$47.65NT$58.05NT$43.46NT$48.94+4.2%8.6M243
2020NT$46.90NT$50.21NT$31.84NT$46.99+0.2%7.5M245
2019NT$39.62NT$52.24NT$38.59NT$46.90+18.4%14.8M241
2018NT$55.18NT$55.82NT$36.72NT$39.62n/a6.7M69

6641 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$16.95-2.6%
August 2026NT$17.40-0.6%
July 2026NT$17.50-0.7%
June 2026NT$17.62-1.6%
May 2026NT$17.92+0.8%
April 2026NT$17.77-1.9%
March 2026NT$18.11-15.7%
February 2026NT$21.49+0.7%
January 2026NT$21.34+14.4%
December 2025NT$18.65-2.3%
November 2025NT$19.09-9.5%
October 2025NT$21.10+9.7%

About the 6641 data

Daily bars. 1,945 sessions from Sep 21, 2018 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 21, 2018, 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/6641/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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