TWSE · 2421 · stock

Sunonwealth Electric Machine Industry Co., Ltd. (2421) stock price history

Every TWSE trading session of Sunonwealth Electric Machine Industry Co., Ltd. from Jan 4, 2000 to Sep 24, 2026: 6,647 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 2421 data, free keyYear by year table

2421 adjusted close, 2000 to 2026

2421Sunonwealth Electric Machine Industry
NT$167.00+34.9% over one year
20052010201520202025
NT$183.29
All time high, 2025
NT$188.61
52 week high, NT$116.07 low
6,647
Daily sessions since 2000

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2000 to 2026 series and minute bars.

2421 key facts

  • Sunonwealth Electric Machine Industry Co., Ltd. (2421) closed at NT$167.00 on Sep 24, 2026 on TWSE.
  • 2421's all time high close is NT$183.29, set on Nov 20, 2025; its all time low close is NT$1.66 on Dec 4, 2000.
  • 2421's 52 week range is NT$116.07 to NT$188.61.
  • 2421 returned +34.9% over the year to Sep 24, 2026 and +401.9% over five years.
  • Over ten years 2421 returned +851%, +25.3% a year compounded.
  • 2421's deepest drawdown was -71.5% from Feb 16, 2000 to Dec 4, 2000.
  • DataCedar holds 6,647 daily sessions of 2421 history from Jan 4, 2000 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

2421 price chart, 2000 to 2026

2421 adjusted close, Jan 4, 2000 to Sep 24, 2026NT$1.75NT$8.03NT$36.81NT$168.78200020052010201520202025
Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

2421 returns

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

PeriodReturn
1 month+16.4%
3 months+11.3%
6 months+31.8%
Year to date+8.2%
1 year+34.9%
3 years+68.7%
5 years+401.9%
10 years+850.8%
Since Jan 4, 2000+3,985%
Compound annual growth, 26.7 years+14.9%

2421 records

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

All time high close
NT$183.29 on Nov 20, 2025
All time low close
NT$1.66 on Dec 4, 2000
52 week high
NT$188.61 on Nov 12, 2025
52 week low
NT$116.07 on Sep 26, 2025
Deepest drawdown
-71.5% from Feb 16, 2000 to Dec 4, 2000, recovered Apr 11, 2001
Best single session
+19.8% on Jul 12, 2002
Worst single session
-13.1% on Nov 20, 2000
Volatility, 1 year annualised
49.6%
Sessions closing higher, 1 year
46%
Growth of 1 since 2000
40.8×
Best calendar year
2001, +238%
Worst calendar year
2002, -35%

2421 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. 2000 starts on Jan 4, 2000; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$155.24NT$184.00NT$118.49NT$167.00+7.6%768.4M178
2025NT$91.14NT$188.61NT$62.04NT$155.24+70.5%1.1B242
2024NT$98.06NT$128.34NT$77.15NT$91.05-6.3%1.8B242
2023NT$37.49NT$141.44NT$36.21NT$97.16+157.9%2.9B239
2022NT$38.26NT$43.84NT$26.86NT$37.67-0.6%463M246
2021NT$44.03NT$46.46NT$30.03NT$37.88-13.0%444.1M243
2020NT$37.00NT$55.44NT$21.50NT$43.54+18.1%1B245
2019NT$27.41NT$37.93NT$21.25NT$36.88+35.6%987.9M241
2018NT$36.43NT$42.75NT$23.05NT$27.19-25.4%633.1M245
2017NT$18.26NT$49.08NT$17.70NT$36.43+101.0%1B243
2016NT$11.14NT$18.79NT$10.10NT$18.13+65.9%563.2M244
2015NT$11.47NT$13.37NT$7.26NT$10.93-4.3%207.3M246
2014NT$10.62NT$13.46NT$10.46NT$11.41+6.9%443.5M248
2013NT$9.64NT$11.48NT$9.08NT$10.68+11.4%51.3M244
2012NT$13.10NT$13.33NT$9.15NT$9.58-26.9%155M248
2011NT$12.53NT$14.00NT$10.05NT$13.10+5.7%164.8M247
2010NT$12.74NT$14.42NT$10.79NT$12.39-2.7%635.1M250
2009NT$7.21NT$13.89NT$7.04NT$12.74+76.7%701.1M249
2008NT$7.00NT$8.75NT$5.45NT$7.21+3.0%1.4B251
2007NT$9.28NT$10.85NT$5.72NT$7.00-25.5%7.5B244
2006NT$4.91NT$9.40NT$4.35NT$9.40+86.3%4.8B248
2005NT$4.14NT$5.20NT$3.48NT$5.05+22.7%525.8M260
2004NT$4.98NT$5.74NT$3.73NT$4.11-17.5%630M262
2003NT$4.21NT$5.48NT$3.56NT$4.98+18.3%655M261
2002NT$6.50NT$8.40NT$4.12NT$4.21-35.2%82.8B261
2001NT$1.92NT$8.39NT$1.89NT$6.50+237.8%176.3B261
2000NT$4.19NT$6.04NT$1.64NT$1.92n/a30.6B259

2421 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$167.00-7.0%
August 2026NT$179.50+37.0%
July 2026NT$131.00-7.7%
June 2026NT$142.00-7.7%
May 2026NT$153.79+9.7%
April 2026NT$140.25+17.9%
March 2026NT$118.97-19.3%
February 2026NT$147.51+6.6%
January 2026NT$138.32-10.9%
December 2025NT$155.24-3.6%
November 2025NT$161.05+10.3%
October 2025NT$146.05+19.4%

About the 2421 data

Daily bars. 6,647 sessions from Jan 4, 2000 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 Jan 4, 2000, 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/2421/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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