TWSE · 6591 · stock

Sun Max Tech Limited (6591) stock price history

Every TWSE trading session of Sun Max Tech Limited from Nov 30, 2016 to Sep 24, 2026: 2,387 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 6591 data, free keyYear by year table

6591 adjusted close, 2016 to 2026

6591Sun Max Tech Limited
NT$44.20-42.1% over one year
20182020202220242026
NT$91.68
All time high, 2025
NT$81.13
52 week high, NT$41.30 low
2,387
Daily sessions since 2016

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2016 to 2026 series and minute bars.

6591 key facts

  • Sun Max Tech Limited (6591) closed at NT$44.20 on Sep 24, 2026 on TWSE.
  • 6591's all time high close is NT$91.68, set on Aug 29, 2025; its all time low close is NT$19.29 on Mar 19, 2020.
  • 6591's 52 week range is NT$41.30 to NT$81.13.
  • 6591 returned -42.1% over the year to Sep 24, 2026 and +21.5% over five years.
  • Since Nov 30, 2016 6591 returned -15%, -1.7% a year compounded.
  • 6591's deepest drawdown was -75.5% from Jan 23, 2018 to Mar 19, 2020.
  • DataCedar holds 2,387 daily sessions of 6591 history from Nov 30, 2016 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6591 price chart, 2016 to 2026

6591 adjusted close, Nov 30, 2016 to Sep 24, 2026NT$20.03NT$39.69NT$59.34NT$79.00201620182020202220242026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

6591 returns

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

PeriodReturn
1 month+3.2%
3 months-13.0%
6 months-23.9%
Year to date-37.4%
1 year-42.1%
3 years+0.1%
5 years+21.5%
10 yearsn/a
Since Nov 30, 2016-15.3%
Compound annual growth, 9.8 years-1.7%

6591 records

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

All time high close
NT$91.68 on Aug 29, 2025
All time low close
NT$19.29 on Mar 19, 2020
52 week high
NT$81.13 on Oct 3, 2025
52 week low
NT$41.30 on Jul 29, 2026
Deepest drawdown
-75.5% from Jan 23, 2018 to Mar 19, 2020, recovered Aug 28, 2025
Best single session
+15.0% on Jan 12, 2017
Worst single session
-13.3% on Feb 13, 2017
Volatility, 1 year annualised
31.5%
Sessions closing higher, 1 year
42%
Best calendar year
2019, +55%
Worst calendar year
2018, -52%

6591 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. 2016 starts on Nov 30, 2016; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$70.37NT$71.76NT$41.30NT$44.20-36.9%46.7M178
2025NT$47.42NT$93.96NT$34.06NT$69.99+47.3%415.9M242
2024NT$42.41NT$63.90NT$37.96NT$47.51+12.0%139.9M242
2023NT$33.16NT$51.38NT$32.73NT$42.41+27.1%74.7M239
2022NT$43.10NT$50.15NT$29.50NT$33.36-22.2%65.7M246
2021NT$43.82NT$55.15NT$33.48NT$42.88-1.0%133.8M243
2020NT$42.11NT$57.61NT$19.29NT$43.33+4.1%357.3M245
2019NT$26.87NT$42.04NT$23.98NT$41.63+55.1%159.3M241
2018NT$56.68NT$79.54NT$25.63NT$26.84-52.4%66M245
2017NT$49.56NT$68.86NT$38.89NT$56.37+11.4%22.7M243
2016NT$52.16NT$52.68NT$40.17NT$50.60n/a758.9K23

6591 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$44.20+3.5%
August 2026NT$42.70-3.0%
July 2026NT$44.00-11.4%
June 2026NT$49.66-6.5%
May 2026NT$53.10+0.4%
April 2026NT$52.91-5.5%
March 2026NT$55.98-10.9%
February 2026NT$62.85+1.7%
January 2026NT$61.83-11.7%
December 2025NT$69.99-2.8%
November 2025NT$72.04-7.5%
October 2025NT$77.89+2.6%

About the 6591 data

Daily bars. 2,387 sessions from Nov 30, 2016 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 30, 2016, 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/6591/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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6591 share price history

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