TWSE · 1312 · stock

Grand Pacific Petrochemical Corporation (1312) stock price history

Every TWSE trading session of Grand Pacific Petrochemical 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 1312 data, free keyYear by year table

1312 adjusted close, 2000 to 2026

1312Grand Pacific Petrochemical Corporation
NT$14.60+55.5% over one year
20052010201520202025
NT$28.71
All time high, 2021
NT$16.50
52 week high, NT$9.01 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.

1312 key facts

  • Grand Pacific Petrochemical Corporation (1312) closed at NT$14.60 on Sep 24, 2026 on TWSE.
  • 1312's all time high close is NT$28.71, set on Apr 29, 2021; its all time low close is NT$2.01 on Nov 24, 2008.
  • 1312's 52 week range is NT$9.01 to NT$16.50.
  • 1312 returned +55.5% over the year to Sep 24, 2026 and -42.0% over five years.
  • Over ten years 1312 returned +17%, +1.6% a year compounded.
  • 1312's deepest drawdown was -90.3% from Mar 29, 2000 to Nov 24, 2008.
  • DataCedar holds 6,647 daily sessions of 1312 history from Jan 4, 2000 and minute bars from Sep 15, 2026, adjusted for splits and dividends, served by the API under a key.

1312 price chart, 2000 to 2026

1312 adjusted close, Jan 4, 2000 to Sep 24, 2026NT$2.28NT$10.64NT$18.99NT$27.34200020052010201520202025
Adjusted daily close. 260 sampled points across the full history; the API serves every session.

1312 returns

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

PeriodReturn
1 month+23.7%
3 months+4.3%
6 months+4.7%
Year to date+23.7%
1 year+55.5%
3 years-13.1%
5 years-42.0%
10 years+16.9%
Since Jan 4, 2000+22.7%
Compound annual growth, 26.7 years+0.8%

1312 records

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

All time high close
NT$28.71 on Apr 29, 2021
All time low close
NT$2.01 on Nov 24, 2008
52 week high
NT$16.50 on Sep 1, 2026
52 week low
NT$9.01 on Oct 3, 2025
Deepest drawdown
-90.3% from Mar 29, 2000 to Nov 24, 2008, recovered Aug 29, 2017
Best single session
+14.0% on Jan 17, 2000
Worst single session
-13.0% on Oct 2, 2000
Volatility, 1 year annualised
51.0%
Sessions closing higher, 1 year
43%
Best calendar year
2009, +261%
Worst calendar year
2008, -59%

1312 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$11.65NT$16.50NT$9.98NT$14.60+24.3%3.2B178
2025NT$10.45NT$13.20NT$8.37NT$11.75+12.4%1.1B242
2024NT$15.20NT$15.80NT$10.20NT$10.45-31.3%752.9M242
2023NT$18.05NT$20.24NT$14.70NT$15.20-15.3%546.5M239
2022NT$24.81NT$25.11NT$15.76NT$17.95-27.3%1.2B246
2021NT$20.66NT$30.98NT$17.48NT$24.68+21.2%4.8B243
2020NT$15.98NT$21.13NT$9.13NT$20.36+27.7%2.9B245
2019NT$18.94NT$21.73NT$15.08NT$15.94-14.9%1.1B241
2018NT$26.09NT$29.12NT$16.67NT$18.73-28.1%2B245
2017NT$16.71NT$27.63NT$14.70NT$26.05+57.0%2.5B243
2016NT$11.63NT$18.41NT$10.05NT$16.59+42.7%1.6B244
2015NT$12.54NT$16.08NT$9.60NT$11.63-7.0%1.4B246
2014NT$16.15NT$17.12NT$8.78NT$12.50-22.6%1.5B248
2013NT$10.27NT$17.92NT$9.71NT$16.15+58.7%1.8B244
2012NT$8.17NT$10.97NT$6.92NT$10.17+24.4%1.4B248
2011NT$12.54NT$14.34NT$7.10NT$8.17-34.4%3.3B247
2010NT$9.76NT$12.78NT$6.53NT$12.45+27.5%4.1B250
2009NT$2.71NT$10.29NT$2.44NT$9.76+260.9%8.2B249
2008NT$6.56NT$7.88NT$1.99NT$2.71-58.7%9.8B251
2007NT$7.41NT$9.32NT$5.88NT$6.56-10.1%2B244
2006NT$4.65NT$7.50NT$4.15NT$7.29+51.6%9.6B248
2005NT$8.12NT$8.29NT$4.18NT$4.81-41.6%486.3M260
2004NT$8.38NT$9.59NT$6.26NT$8.24-1.8%2.2B262
2003NT$7.47NT$12.18NT$4.56NT$8.38+12.2%2.8B261
2002NT$3.79NT$12.29NT$3.79NT$7.47+96.9%4.4B261
2001NT$5.37NT$9.22NT$2.21NT$3.79-29.4%39.5B261
2000NT$11.41NT$21.25NT$5.03NT$5.37n/a79B259

1312 monthly closes, last 12 months

MonthMonth end closeChange
September 2026NT$14.60-6.1%
August 2026NT$15.55+37.6%
July 2026NT$11.30-19.9%
June 2026NT$14.10+24.2%
May 2026NT$11.35-7.7%
April 2026NT$12.30-7.9%
March 2026NT$13.35-2.2%
February 2026NT$13.65+1.1%
January 2026NT$13.50+14.9%
December 2025NT$11.75+5.9%
November 2025NT$11.10+7.8%
October 2025NT$10.30+8.0%

About the 1312 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/1312/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

Nearby on TWSE

  • 1307 San Fang Chemical Industry Co., Ltd.
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  • 1309 Taita Chemical Company, Limited
  • 1310 Taiwan Styrene Monomer Corporation
  • 1312A Grand Pacific Petrochemical Corporation
  • 1313 UPC Technology Corporation
  • 1314 China Petrochemical Development Corporation
  • 1315 Tahsin Industrial Corporation

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1312 share price history

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