SET · INOX · stock
POSCO-Thainox Public Company Limited (INOX) stock price history
Every SET trading session of POSCO-Thainox Public Company Limited from Dec 14, 2004 to Sep 28, 2026: 5,337 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 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.
INOX adjusted close, 2004 to 2026
- THB 21.73
- All time high, 2017
- THB 5.30
- 52 week high, THB 3.40 low
- 5,337
- Daily sessions since 2004
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2004 to 2026 series and minute bars.
INOX key facts
- POSCO-Thainox Public Company Limited (INOX) closed at THB 3.88 on Sep 28, 2026 on SET.
- INOX's all time high close is THB 21.73, set on Feb 22, 2017; its all time low close is THB 3.10 on Mar 17, 2020.
- INOX's 52 week range is THB 3.40 to THB 5.30.
- INOX returned -7.6% over the year to Sep 28, 2026 and -63.3% over five years.
- Over ten years INOX returned -54%, -7.4% a year compounded.
- INOX's deepest drawdown was -85.8% from Feb 22, 2017 to Mar 17, 2020.
- DataCedar holds 5,337 daily sessions of INOX history from Dec 14, 2004 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
INOX price chart, 2004 to 2026
INOX returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -4.0% |
| 3 months | -7.6% |
| 6 months | -9.8% |
| Year to date | +4.9% |
| 1 year | -7.6% |
| 3 years | -37.0% |
| 5 years | -63.3% |
| 10 years | -53.7% |
| Since Dec 14, 2004 | -64.8% |
| Compound annual growth, 21.8 years | -4.7% |
INOX records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- THB 21.73 on Feb 22, 2017
- All time low close
- THB 3.10 on Mar 17, 2020
- 52 week high
- THB 5.30 on May 8, 2026
- 52 week low
- THB 3.40 on Dec 22, 2025
- Deepest drawdown
- -85.8% from Feb 22, 2017 to Mar 17, 2020, not yet recovered
- Best single session
- +29.8% on Apr 26, 2021
- Worst single session
- -23.1% on Oct 10, 2008
- Volatility, 1 year annualised
- 50.0%
- Sessions closing higher, 1 year
- 34%
- Best calendar year
- 2021, +163%
- Worst calendar year
- 2023, -41%
INOX 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. 2004 starts on Dec 14, 2004; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | THB 3.70 | THB 5.30 | THB 3.60 | THB 3.88 | +4.9% | 45.4M | 186 |
| 2025 | THB 4.26 | THB 4.93 | THB 3.40 | THB 3.70 | -13.2% | 21.5M | 242 |
| 2024 | THB 5.50 | THB 6.35 | THB 3.79 | THB 4.26 | -22.4% | 41.2M | 243 |
| 2023 | THB 9.34 | THB 9.89 | THB 5.02 | THB 5.50 | -41.1% | 42.9M | 243 |
| 2022 | THB 9.72 | THB 15.91 | THB 8.78 | THB 9.34 | -3.9% | 1.1B | 241 |
| 2021 | THB 3.70 | THB 14.62 | THB 3.61 | THB 9.72 | +162.8% | 1.4B | 241 |
| 2020 | THB 5.42 | THB 5.59 | THB 2.41 | THB 3.70 | -30.6% | 41.6M | 243 |
| 2019 | THB 8.10 | THB 9.15 | THB 4.99 | THB 5.33 | -33.5% | 9M | 244 |
| 2018 | THB 10.63 | THB 11.34 | THB 6.72 | THB 8.02 | -25.1% | 11.3M | 245 |
| 2017 | THB 13.82 | THB 23.29 | THB 10.31 | THB 10.71 | -22.5% | 135M | 242 |
| 2016 | THB 6.50 | THB 15.68 | THB 5.82 | THB 13.82 | +94.1% | 6.3M | 244 |
| 2015 | THB 10.71 | THB 12.47 | THB 5.74 | THB 7.12 | -30.1% | 1.5M | 244 |
| 2014 | THB 9.64 | THB 13.70 | THB 8.80 | THB 10.18 | +5.6% | 3.7M | 245 |
| 2013 | THB 13.78 | THB 15.31 | THB 8.04 | THB 9.64 | -30.8% | 3.5M | 245 |
| 2012 | THB 14.16 | THB 16.84 | THB 9.26 | THB 13.93 | -1.6% | 1.2M | 245 |
| 2011 | THB 11.83 | THB 16.84 | THB 9.18 | THB 14.16 | +20.4% | 232.7M | 244 |
| 2010 | THB 11.98 | THB 13.79 | THB 10.40 | THB 11.75 | -3.1% | 82.6M | 244 |
| 2009 | THB 7.01 | THB 13.64 | THB 5.20 | THB 12.13 | +73.1% | 115.3M | 245 |
| 2008 | THB 9.41 | THB 11.00 | THB 4.37 | THB 7.01 | -23.7% | 64M | 247 |
| 2007 | THB 9.34 | THB 11.51 | THB 8.37 | THB 9.19 | -6.8% | 88.9M | 246 |
| 2006 | THB 8.01 | THB 11.28 | THB 6.26 | THB 9.86 | +24.1% | 152.3M | 259 |
| 2005 | THB 11.81 | THB 12.61 | THB 5.93 | THB 7.95 | -32.4% | 766M | 245 |
| 2004 | THB 13.10 | THB 13.22 | THB 11.02 | THB 11.75 | n/a | 190.1M | 14 |
INOX monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | THB 3.88 | -3.5% |
| August 2026 | THB 4.02 | -2.4% |
| July 2026 | THB 4.12 | -1.4% |
| June 2026 | THB 4.18 | -5.0% |
| May 2026 | THB 4.40 | +2.3% |
| April 2026 | THB 4.30 | -6.5% |
| March 2026 | THB 4.60 | +15.0% |
| February 2026 | THB 4.00 | -9.1% |
| January 2026 | THB 4.40 | +18.9% |
| December 2025 | THB 3.70 | 0.0% |
| November 2025 | THB 3.70 | -2.6% |
| October 2025 | THB 3.80 | -5.0% |
About the INOX data
Daily bars. 5,337 sessions from Dec 14, 2004 to Sep 28, 2026, one row per SET 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 17, 2026 forward, most recent session Sep 28, 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 SET trading days; minute timestamps are UTC. Prices are in THB. 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 Dec 14, 2004, 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/INOX/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on SET
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Common questions
INOX share price history
