TWSE · 3019 · stock

Asia Optical Co., Inc. (3019) stock price history

Every TWSE trading session of Asia Optical Co., Inc. from Aug 27, 2002 to Sep 24, 2026: 5,957 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 3019 data, free keyYear by year table

3019 adjusted close, 2002 to 2026

3019Asia Optical Co., Inc.
NT$135.00-13.6% over one year
20052010201520202025
NT$197.34
All time high, 2025
NT$166.96
52 week high, NT$116.48 low
5,957
Daily sessions since 2002

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2002 to 2026 series and minute bars.

3019 key facts

  • Asia Optical Co., Inc. (3019) closed at NT$135.00 on Sep 24, 2026 on TWSE.
  • 3019's all time high close is NT$197.34, set on Feb 26, 2025; its all time low close is NT$15.74 on Dec 19, 2011.
  • 3019's 52 week range is NT$116.48 to NT$166.96.
  • 3019 returned -13.6% over the year to Sep 24, 2026 and +102.4% over five years.
  • Over ten years 3019 returned +483%, +19.3% a year compounded.
  • 3019's deepest drawdown was -88.8% from Dec 27, 2005 to Dec 19, 2011.
  • DataCedar holds 5,957 daily sessions of 3019 history from Aug 27, 2002 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

3019 price chart, 2002 to 2026

3019 adjusted close, Aug 27, 2002 to Sep 24, 2026NT$17.65NT$76.45NT$135.24NT$194.0420052010201520202025
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

3019 returns

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

PeriodReturn
1 month+1.5%
3 months-13.2%
6 months+11.7%
Year to date-0.7%
1 year-13.6%
3 years+132.3%
5 years+102.4%
10 years+482.6%
Since Aug 27, 2002+201.9%
Compound annual growth, 24.1 years+4.7%

3019 records

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

All time high close
NT$197.34 on Feb 26, 2025
All time low close
NT$15.74 on Dec 19, 2011
52 week high
NT$166.96 on Jan 29, 2026
52 week low
NT$116.48 on Apr 2, 2026
Deepest drawdown
-88.8% from Dec 27, 2005 to Dec 19, 2011, recovered Dec 18, 2024
Best single session
+20.8% on Feb 20, 2017
Worst single session
-10.0% on Sep 10, 2018
Volatility, 1 year annualised
46.2%
Sessions closing higher, 1 year
45%
Growth of 1 since 2002
3.0×
Best calendar year
2017, +221%
Worst calendar year
2011, -62%

3019 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. 2002 starts on Aug 27, 2002; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$135.90NT$166.96NT$116.48NT$135.00+0.1%1.3B178
2025NT$176.14NT$205.34NT$102.67NT$134.93-24.0%3.5B242
2024NT$64.90NT$177.56NT$56.18NT$177.56+175.5%2.3B242
2023NT$54.13NT$68.58NT$53.59NT$64.45+19.5%322.6M239
2022NT$78.70NT$80.70NT$46.64NT$53.95-31.0%346.8M246
2021NT$61.26NT$86.19NT$54.75NT$78.20+28.5%1.7B243
2020NT$89.26NT$90.86NT$41.87NT$60.84-29.6%960.4M245
2019NT$51.75NT$87.65NT$48.55NT$86.45+67.6%1.5B241
2018NT$73.57NT$96.84NT$39.98NT$51.59-29.9%1.9B245
2017NT$23.02NT$109.47NT$22.87NT$73.57+221.1%3.7B243
2016NT$22.12NT$24.60NT$17.28NT$22.91+4.6%301.7M244
2015NT$29.89NT$35.30NT$16.52NT$21.90-27.1%905.6M246
2014NT$22.23NT$39.96NT$21.52NT$30.04+36.1%1.4B248
2013NT$20.36NT$26.97NT$20.13NT$22.08+8.7%579.9M244
2012NT$18.03NT$29.14NT$16.94NT$20.32+13.9%882.2M248
2011NT$46.95NT$58.96NT$15.74NT$17.84-61.6%1.4B247
2010NT$54.68NT$58.59NT$32.67NT$46.42-13.2%1.2B250
2009NT$28.23NT$54.68NT$24.97NT$53.48+89.5%2.3B249
2008NT$60.85NT$63.89NT$21.27NT$28.23-54.1%13.3B251
2007NT$97.42NT$105.86NT$50.99NT$61.46-32.6%560.9M244
2006NT$130.88NT$139.88NT$80.45NT$91.25-32.6%676M248
2005NT$89.18NT$144.68NT$78.09NT$135.38+51.8%582.3M260
2004NT$86.68NT$122.61NT$57.04NT$89.18+2.9%475.7M262
2003NT$52.02NT$92.60NT$45.94NT$86.68+66.6%630M261
2002NT$45.63NT$60.54NT$36.51NT$52.02n/a191.9M91

3019 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$135.00-5.6%
August 2026NT$143.00+11.7%
July 2026NT$128.00-10.2%
June 2026NT$142.50-4.7%
May 2026NT$149.49+11.2%
April 2026NT$134.44+14.5%
March 2026NT$117.45-20.4%
February 2026NT$147.55-7.0%
January 2026NT$158.71+17.6%
December 2025NT$134.930.0%
November 2025NT$134.93-11.5%
October 2025NT$152.40-0.9%

About the 3019 data

Daily bars. 5,957 sessions from Aug 27, 2002 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 Aug 27, 2002, 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/3019/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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