TWSE · 6409 · stock

Voltronic Power Technology Corp. (6409) stock price history

Every TWSE trading session of Voltronic Power Technology Corp. from Mar 12, 2013 to Sep 24, 2026: 3,305 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 6409 data, free keyYear by year table

6409 adjusted close, 2013 to 2026

6409Voltronic Power Technology Corp.
NT$879.00-4.1% over one year
2014201620182020202220242026
NT$2,207
All time high, 2024
NT$1,329
52 week high, NT$638.57 low
3,305
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.

6409 key facts

  • Voltronic Power Technology Corp. (6409) closed at NT$879.00 on Sep 24, 2026 on TWSE.
  • 6409's all time high close is NT$2,207, set on Sep 24, 2024; its all time low close is NT$54.58 on Mar 14, 2013.
  • 6409's 52 week range is NT$638.57 to NT$1,329.
  • 6409 returned -4.1% over the year to Sep 24, 2026 and -39.5% over five years.
  • Over ten years 6409 returned +160%, +10.0% a year compounded.
  • 6409's deepest drawdown was -71.1% from Sep 24, 2024 to May 21, 2026.
  • DataCedar holds 3,305 daily sessions of 6409 history from Mar 12, 2013 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6409 price chart, 2013 to 2026

6409 adjusted close, Mar 12, 2013 to Sep 24, 2026NT$54.70NT$186.14NT$633.41NT$2,1552014201620182020202220242026
Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

6409 returns

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

PeriodReturn
1 month-13.0%
3 months-0.0%
6 months+23.3%
Year to date-4.3%
1 year-4.1%
3 years-38.0%
5 years-39.5%
10 years+159.9%
Since Mar 12, 2013+1,507%
Compound annual growth, 13.5 years+22.8%

6409 records

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

All time high close
NT$2,207 on Sep 24, 2024
All time low close
NT$54.58 on Mar 14, 2013
52 week high
NT$1,329 on Jul 6, 2026
52 week low
NT$638.57 on May 21, 2026
Deepest drawdown
-71.1% from Sep 24, 2024 to May 21, 2026, not yet recovered
Best single session
+10.0% on Aug 27, 2015
Worst single session
-10.1% on Mar 31, 2014
Volatility, 1 year annualised
54.2%
Sessions closing higher, 1 year
44%
Growth of 1 since 2013
16.1×
Best calendar year
2014, +85%
Worst calendar year
2025, -46%

6409 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 Mar 12, 2013; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$940.04NT$1,329NT$638.57NT$879.00-6.0%155.9M178
2025NT$1,722NT$1,816NT$876.47NT$935.22-46.0%115.4M242
2024NT$1,577NT$2,221NT$1,194NT$1,732+11.1%40.8M242
2023NT$1,371NT$1,892NT$1,157NT$1,558+13.3%38M239
2022NT$1,357NT$1,656NT$1,054NT$1,375+1.3%41.2M246
2021NT$940.21NT$1,652NT$875.52NT$1,357+40.5%48.2M243
2020NT$571.52NT$1,005NT$444.07NT$966.09+68.6%34.3M245
2019NT$392.55NT$595.57NT$384.40NT$573.12+44.1%18.2M241
2018NT$371.01NT$412.55NT$328.29NT$397.73+8.5%15.6M245
2017NT$308.09NT$432.26NT$276.93NT$366.74+18.9%19.3M243
2016NT$313.53NT$361.25NT$273.47NT$308.43-1.6%36.2M244
2015NT$169.77NT$333.07NT$150.48NT$313.53+84.7%75.9M246
2014NT$94.34NT$185.50NT$87.76NT$169.77+85.3%9.8B248
2013NT$54.70NT$99.06NT$54.46NT$91.60n/a7B203

6409 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$879.00-15.1%
August 2026NT$1,035+8.2%
July 2026NT$957.00-8.4%
June 2026NT$1,045+53.0%
May 2026NT$682.88-8.2%
April 2026NT$743.56+6.6%
March 2026NT$697.32-21.8%
February 2026NT$891.88+8.6%
January 2026NT$821.57-12.2%
December 2025NT$935.22-16.3%
November 2025NT$1,117-4.1%
October 2025NT$1,165+30.5%

About the 6409 data

Daily bars. 3,305 sessions from Mar 12, 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 Mar 12, 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/6409/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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