TWSE · 2478 · stock

TA-I Technology Co., Ltd. (2478) stock price history

Every TWSE trading session of TA-I Technology 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 2478 data, free keyYear by year table

2478 adjusted close, 2000 to 2026

2478TA-I Technology Co., Ltd.
NT$120.00+136.5% over one year
20052010201520202025
NT$239.33
All time high, 2026
NT$253.67
52 week high, NT$47.82 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.

2478 key facts

  • TA-I Technology Co., Ltd. (2478) closed at NT$120.00 on Sep 24, 2026 on TWSE.
  • 2478's all time high close is NT$239.33, set on Jun 25, 2026; its all time low close is NT$3.22 on Jan 5, 2000.
  • 2478's 52 week range is NT$47.82 to NT$253.67.
  • 2478 returned +136.5% over the year to Sep 24, 2026 and +130.2% over five years.
  • Over ten years 2478 returned +461%, +18.8% a year compounded.
  • 2478's deepest drawdown was -92.9% from Apr 3, 2007 to Jan 20, 2009.
  • DataCedar holds 6,647 daily sessions of 2478 history from Jan 4, 2000 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

2478 price chart, 2000 to 2026

2478 adjusted close, Jan 4, 2000 to Sep 24, 2026NT$3.29NT$12.32NT$46.16NT$173.00200020052010201520202025
Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

2478 returns

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

PeriodReturn
1 month-0.4%
3 months-49.4%
6 months+95.1%
Year to date+116.3%
1 year+136.5%
3 years+179.0%
5 years+130.2%
10 years+461.0%
Since Jan 4, 2000+3,551%
Compound annual growth, 26.7 years+14.4%

2478 records

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

All time high close
NT$239.33 on Jun 25, 2026
All time low close
NT$3.22 on Jan 5, 2000
52 week high
NT$253.67 on Jul 6, 2026
52 week low
NT$47.82 on Sep 24, 2025
Deepest drawdown
-92.9% from Apr 3, 2007 to Jan 20, 2009, recovered May 29, 2018
Best single session
+51.1% on Aug 25, 2010
Worst single session
-59.4% on Sep 20, 2001
Volatility, 1 year annualised
70.9%
Sessions closing higher, 1 year
53%
Growth of 1 since 2000
36.5×
Best calendar year
2009, +263%
Worst calendar year
2011, -43%

2478 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$57.36NT$253.67NT$56.07NT$120.00+112.1%1B178
2025NT$43.67NT$68.34NT$33.25NT$56.57+28.8%349.8M242
2024NT$43.98NT$56.65NT$41.59NT$43.91-0.4%72.1M242
2023NT$37.85NT$47.16NT$37.68NT$44.08+17.4%49M239
2022NT$53.34NT$55.29NT$34.14NT$37.54-29.4%47.8M246
2021NT$67.29NT$71.65NT$46.11NT$53.18-20.6%383.3M243
2020NT$40.71NT$72.20NT$34.66NT$66.98+66.1%2.1B245
2019NT$47.62NT$55.92NT$28.76NT$40.33-14.1%609.9M241
2018NT$34.68NT$142.31NT$25.03NT$46.97+36.9%1.9B245
2017NT$17.14NT$35.46NT$16.96NT$34.32+100.7%161M243
2016NT$18.57NT$24.33NT$16.51NT$17.10-7.0%38M244
2015NT$22.09NT$25.33NT$14.92NT$18.37-17.3%51.4M246
2014NT$18.53NT$31.68NT$17.92NT$22.21+19.1%115.7M248
2013NT$20.90NT$21.61NT$16.88NT$18.65-10.8%29.5M244
2012NT$19.79NT$26.01NT$18.16NT$20.90+5.6%28M248
2011NT$34.90NT$35.45NT$15.86NT$19.79-43.1%46.5M247
2010NT$30.83NT$37.29NT$19.65NT$34.75+17.6%527.3M250
2009NT$8.14NT$29.53NT$7.00NT$29.53+263.0%576.6M249
2008NT$12.62NT$19.39NT$7.82NT$8.14-35.3%1.5B251
2007NT$17.88NT$107.03NT$10.77NT$12.57-30.0%231.5M244
2006NT$10.23NT$19.07NT$8.79NT$17.95+75.1%3.4B248
2005NT$6.16NT$10.40NT$5.50NT$10.25+67.3%475.3M260
2004NT$9.48NT$11.42NT$5.43NT$6.13-35.3%14.8B262
2003NT$5.73NT$9.76NT$5.05NT$9.48+65.4%19B261
2002NT$6.09NT$9.67NT$4.69NT$5.73-6.0%103B261
2001NT$7.20NT$9.67NT$3.31NT$6.09-15.3%31B261
2000NT$3.33NT$10.13NT$3.11NT$7.20n/a964.5M259

2478 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$120.00-2.8%
August 2026NT$123.50+13.8%
July 2026NT$108.50-51.3%
June 2026NT$223.01+62.2%
May 2026NT$137.46+103.2%
April 2026NT$67.64+17.7%
March 2026NT$57.46-20.2%
February 2026NT$72.00+11.0%
January 2026NT$64.88+14.7%
December 2025NT$56.57-7.3%
November 2025NT$61.02-1.3%
October 2025NT$61.81+19.0%

About the 2478 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/2478/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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