TWSE · 6558 · stock

SYNergy ScienTech Corp. (6558) stock price history

Every TWSE trading session of SYNergy ScienTech Corp. from Nov 17, 2015 to Sep 24, 2026: 2,640 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 6558 data, free keyYear by year table

6558 adjusted close, 2015 to 2026

6558SYNergy ScienTech Corp.
NT$24.50-49.9% over one year
20182020202220242026
NT$77.85
All time high, 2019
NT$50.30
52 week high, NT$22.55 low
2,640
Daily sessions since 2015

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2015 to 2026 series and minute bars.

6558 key facts

  • SYNergy ScienTech Corp. (6558) closed at NT$24.50 on Sep 24, 2026 on TWSE.
  • 6558's all time high close is NT$77.85, set on Nov 5, 2019; its all time low close is NT$9.44 on Feb 22, 2016.
  • 6558's 52 week range is NT$22.55 to NT$50.30.
  • 6558 returned -49.9% over the year to Sep 24, 2026 and -19.9% over five years.
  • Over ten years 6558 returned +16%, +1.5% a year compounded.
  • 6558's deepest drawdown was -78.9% from Nov 5, 2019 to Oct 21, 2022.
  • DataCedar holds 2,640 daily sessions of 6558 history from Nov 17, 2015 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

6558 price chart, 2015 to 2026

6558 adjusted close, Nov 17, 2015 to Sep 24, 2026NT$9.44NT$29.14NT$48.83NT$68.53201620182020202220242026
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

6558 returns

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

PeriodReturn
1 month-1.8%
3 months-18.1%
6 months-15.7%
Year to date-34.6%
1 year-49.9%
3 years+7.9%
5 years-19.9%
10 years+15.6%
Since Nov 17, 2015+113.9%
Compound annual growth, 10.9 years+7.3%

6558 records

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

All time high close
NT$77.85 on Nov 5, 2019
All time low close
NT$9.44 on Feb 22, 2016
52 week high
NT$50.30 on Sep 25, 2025
52 week low
NT$22.55 on Jul 29, 2026
Deepest drawdown
-78.9% from Nov 5, 2019 to Oct 21, 2022, not yet recovered
Best single session
+23.7% on Aug 8, 2016
Worst single session
-11.0% on Aug 9, 2016
Volatility, 1 year annualised
40.9%
Sessions closing higher, 1 year
43%
Growth of 1 since 2015
2.1×
Best calendar year
2017, +101%
Worst calendar year
2021, -35%

6558 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. 2015 starts on Nov 17, 2015; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$37.50NT$41.55NT$22.55NT$24.50-33.8%125.6M178
2025NT$39.04NT$66.75NT$34.00NT$37.00-5.1%3.3B242
2024NT$26.97NT$49.27NT$19.07NT$38.99+45.1%923.6M242
2023NT$21.70NT$34.27NT$20.07NT$26.87+23.8%145M239
2022NT$32.78NT$37.70NT$16.29NT$21.70-33.8%64.7M246
2021NT$51.06NT$52.83NT$27.71NT$32.78-35.0%119M243
2020NT$70.83NT$71.12NT$24.60NT$50.47-27.9%495M245
2019NT$43.38NT$80.35NT$38.67NT$69.97+63.8%525.9M241
2018NT$35.75NT$46.49NT$23.57NT$42.72+20.2%129.7M245
2017NT$17.56NT$40.78NT$17.11NT$35.55+100.7%82.2M243
2016NT$12.19NT$22.48NT$8.97NT$17.72+46.3%44.4M243
2015NT$11.45NT$15.20NT$9.96NT$12.11n/a3.5M33

6558 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$24.50-0.6%
August 2026NT$24.65+4.9%
July 2026NT$23.50-20.1%
June 2026NT$29.40-9.0%
May 2026NT$32.30+12.0%
April 2026NT$28.85+4.5%
March 2026NT$27.60-18.7%
February 2026NT$33.95-5.4%
January 2026NT$35.90-3.0%
December 2025NT$37.00-4.5%
November 2025NT$38.75-3.2%
October 2025NT$40.05-18.1%

About the 6558 data

Daily bars. 2,640 sessions from Nov 17, 2015 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 24, 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 17, 2015, 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/6558/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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