TWSE · 1312A · stock

Grand Pacific Petrochemical Corporation (1312A) stock price history

Every TWSE trading session of Grand Pacific Petrochemical Corporation from Sep 29, 2005 to Sep 24, 2026: 5,150 daily bars, adjusted for splits and dividends, with minute bars from Sep 18, 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 1312A data, free keyYear by year table

1312A adjusted close, 2005 to 2026

1312AGrand Pacific Petrochemical Corporation
NT$22.80+7.0% over one year
2010201520202025
NT$33.23
All time high, 2021
NT$23.95
52 week high, NT$20.20 low
5,150
Daily sessions since 2005

Last updated Sep 24, 2026, the last stored session. Refreshes after each trading day. Full 2005 to 2026 series and minute bars.

1312A key facts

  • Grand Pacific Petrochemical Corporation (1312A) closed at NT$22.80 on Sep 24, 2026 on TWSE.
  • 1312A's all time high close is NT$33.23, set on May 3, 2021; its all time low close is NT$3.32 on Oct 26, 2005.
  • 1312A's 52 week range is NT$20.20 to NT$23.95.
  • 1312A returned +7.0% over the year to Sep 24, 2026 and -25.4% over five years.
  • Over ten years 1312A returned +28%, +2.5% a year compounded.
  • 1312A's deepest drawdown was -46.8% from May 22, 2008 to Mar 3, 2009.
  • DataCedar holds 5,150 daily sessions of 1312A history from Sep 29, 2005 and minute bars from Sep 18, 2026, adjusted for splits and dividends, served by the API under a key.

1312A price chart, 2005 to 2026

1312A adjusted close, Sep 29, 2005 to Sep 24, 2026NT$3.36NT$12.99NT$22.61NT$32.2320052010201520202025
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

1312A returns

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

PeriodReturn
1 month+9.4%
3 months+3.6%
6 months+0.4%
Year to date+1.3%
1 year+7.0%
3 years-12.8%
5 years-25.4%
10 years+27.9%
Since Sep 29, 2005+511.4%
Compound annual growth, 21.0 years+9.0%

1312A records

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

All time high close
NT$33.23 on May 3, 2021
All time low close
NT$3.32 on Oct 26, 2005
52 week high
NT$23.95 on Jan 14, 2026
52 week low
NT$20.20 on May 28, 2026
Deepest drawdown
-46.8% from May 22, 2008 to Mar 3, 2009, recovered Nov 20, 2009
Best single session
+7.5% on Apr 2, 2009
Worst single session
-8.4% on Apr 7, 2025
Volatility, 1 year annualised
20.9%
Sessions closing higher, 1 year
33%
Growth of 1 since 2005
6.1×
Best calendar year
2009, +71%
Worst calendar year
2008, -29%

1312A 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. 2005 starts on Sep 29, 2005; 2026 runs to Sep 24, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026NT$22.40NT$23.95NT$20.20NT$22.80+1.3%2M178
2025NT$22.40NT$24.00NT$20.60NT$22.50-0.4%2.1M242
2024NT$26.05NT$26.20NT$22.60NT$22.60-13.2%1.5M242
2023NT$26.36NT$28.04NT$25.65NT$26.05+0.1%2.2M239
2022NT$30.88NT$33.53NT$25.35NT$26.02-15.7%2.4M246
2021NT$26.82NT$33.57NT$26.52NT$30.88+14.9%5.4M243
2020NT$29.18NT$29.22NT$23.75NT$26.87-7.9%3M245
2019NT$28.74NT$31.08NT$26.83NT$29.18+1.1%3.4M241
2018NT$26.99NT$30.74NT$24.29NT$28.87+7.0%3.7M245
2017NT$19.36NT$27.43NT$18.35NT$26.99+38.6%4M243
2016NT$15.21NT$19.85NT$15.21NT$19.47+28.0%1.9M244
2015NT$14.06NT$15.82NT$14.06NT$15.21+3.0%798K246
2014NT$15.26NT$15.51NT$13.52NT$14.77-3.8%2.7M248
2013NT$11.62NT$15.99NT$11.53NT$15.36+32.8%5.1M244
2012NT$10.27NT$11.80NT$9.83NT$11.56+12.6%1.7M248
2011NT$10.90NT$12.37NT$9.31NT$10.27-7.3%5.2M247
2010NT$7.74NT$12.16NT$7.38NT$11.08+43.5%31.8M250
2009NT$4.52NT$7.88NT$4.07NT$7.72+70.9%4.3M249
2008NT$6.36NT$7.66NT$4.09NT$4.52-28.5%2.1M251
2007NT$6.00NT$7.48NT$5.70NT$6.32+4.3%6.1M244
2006NT$3.71NT$6.06NT$3.54NT$6.06+63.4%4.2M248
2005NT$3.85NT$4.05NT$3.32NT$3.71n/a478K67

1312A monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$22.80-1.3%
August 2026NT$23.10+11.3%
July 2026NT$20.75-5.3%
June 2026NT$21.90+5.8%
May 2026NT$20.70-8.0%
April 2026NT$22.50-1.3%
March 2026NT$22.80+0.4%
February 2026NT$22.70-1.1%
January 2026NT$22.95+2.0%
December 2025NT$22.50+4.7%
November 2025NT$21.50+0.5%
October 2025NT$21.40+0.9%

About the 1312A data

Daily bars. 5,150 sessions from Sep 29, 2005 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 18, 2026 forward, most recent session Sep 23, 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 Sep 29, 2005, 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/1312A/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

Nearby on TWSE

  • 1308 Asia Polymer Corporation
  • 1309 Taita Chemical Company, Limited
  • 1310 Taiwan Styrene Monomer Corporation
  • 1312 Grand Pacific Petrochemical Corporation
  • 1313 UPC Technology Corporation
  • 1314 China Petrochemical Development Corporation
  • 1315 Tahsin Industrial Corporation
  • 1316 Sun Yad Construction Co.,Ltd

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