TWSE · 2303 · stock

United Microelectronics Corporation (2303) stock price history

Every TWSE trading session of United Microelectronics Corporation 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 2303 data, free keyYear by year table

2303 adjusted close, 2000 to 2026

2303United Microelectronics Corporation
NT$154.00+249.2% over one year
20052010201520202025
NT$175.50
All time high, 2026
NT$182.38
52 week high, NT$42.47 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.

2303 key facts

  • United Microelectronics Corporation (2303) closed at NT$154.00 on Sep 24, 2026 on TWSE.
  • 2303's all time high close is NT$175.50, set on Jun 25, 2026; its all time low close is NT$3.16 on Dec 5, 2008.
  • 2303's 52 week range is NT$42.47 to NT$182.38.
  • 2303 returned +249.2% over the year to Sep 24, 2026 and +200.0% over five years.
  • Over ten years 2303 returned +1,995%, +35.6% a year compounded.
  • 2303's deepest drawdown was -85.3% from May 17, 2000 to Dec 5, 2008.
  • DataCedar holds 6,647 daily sessions of 2303 history from Jan 4, 2000 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

2303 price chart, 2000 to 2026

2303 adjusted close, Jan 4, 2000 to Sep 24, 2026NT$3.54NT$12.76NT$46.02NT$166.00200020052010201520202025
Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

2303 returns

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

PeriodReturn
1 month+24.7%
3 months-12.0%
6 months+177.2%
Year to date+216.4%
1 year+249.2%
3 years+288.2%
5 years+200.0%
10 years+1,995%
Since Jan 4, 2000+733.9%
Compound annual growth, 26.7 years+8.3%

2303 records

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

All time high close
NT$175.50 on Jun 25, 2026
All time low close
NT$3.16 on Dec 5, 2008
52 week high
NT$182.38 on Jun 25, 2026
52 week low
NT$42.47 on Oct 3, 2025
Deepest drawdown
-85.3% from May 17, 2000 to Dec 5, 2008, recovered Oct 7, 2020
Best single session
+19.0% on May 10, 2000
Worst single session
-14.9% on Oct 9, 2007
Volatility, 1 year annualised
63.1%
Sessions closing higher, 1 year
54%
Growth of 1 since 2000
8.3×
Best calendar year
2020, +201%
Worst calendar year
2008, -59%

2303 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$48.52NT$182.38NT$47.29NT$154.00+218.0%35.7B178
2025NT$39.62NT$50.24NT$36.48NT$48.42+21.8%11.1B242
2024NT$45.93NT$52.09NT$37.50NT$39.76-13.6%15.7B242
2023NT$33.00NT$47.94NT$32.83NT$46.02+38.6%12.8B239
2022NT$49.95NT$50.18NT$28.55NT$33.20-33.3%20.1B246
2021NT$34.24NT$55.16NT$31.94NT$49.80+42.3%49.7B243
2020NT$11.62NT$38.36NT$9.25NT$34.98+201.0%36.5B245
2019NT$7.67NT$12.05NT$7.16NT$11.62+52.2%10.4B241
2018NT$9.25NT$12.65NT$7.06NT$7.63-17.4%13.2B245
2017NT$7.16NT$10.94NT$7.10NT$9.25+29.1%12.7B243
2016NT$7.27NT$8.14NT$6.49NT$7.16-1.5%6.8B244
2015NT$8.48NT$9.25NT$5.96NT$7.27-14.2%12B246
2014NT$6.88NT$9.37NT$6.63NT$8.48+23.2%13.5B248
2013NT$6.39NT$8.35NT$5.91NT$6.88+8.5%14.5B244
2012NT$6.62NT$8.21NT$5.42NT$6.34-4.2%9.7B248
2011NT$7.89NT$8.80NT$5.29NT$6.62-15.6%10.7B247
2010NT$7.99NT$8.87NT$6.13NT$7.84-1.9%13.2B250
2009NT$3.45NT$7.99NT$3.18NT$7.99+131.5%92.8B249
2008NT$8.44NT$8.57NT$3.02NT$3.45-59.4%625.2B251
2007NT$11.97NT$13.11NT$7.87NT$8.51-28.2%9.7B244
2006NT$10.42NT$12.97NT$9.86NT$11.86+12.5%150.1B248
2005NT$9.40NT$12.90NT$8.07NT$10.53+12.1%775.6B260
2004NT$12.36NT$14.95NT$8.85NT$9.40-23.9%20.8B262
2003NT$8.28NT$13.93NT$7.38NT$12.36+49.2%928.4B261
2002NT$15.14NT$17.21NT$7.73NT$8.28-45.3%418.8B261
2001NT$10.79NT$15.88NT$6.94NT$15.14+40.2%1.5T261
2000NT$18.23NT$21.99NT$9.49NT$10.79n/a1.9T259

2303 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$154.00+19.4%
August 2026NT$129.00+6.6%
July 2026NT$121.00-25.2%
June 2026NT$161.73+13.8%
May 2026NT$142.07+86.9%
April 2026NT$76.00+36.8%
March 2026NT$55.55-13.6%
February 2026NT$64.30+4.8%
January 2026NT$61.35+26.7%
December 2025NT$48.42+7.5%
November 2025NT$45.03-1.3%
October 2025NT$45.62+1.9%

About the 2303 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 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 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/2303/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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