SET · RT-R · stock
Right Tunnelling Public Company Limited (RT-R) stock price history
Every SET trading session of Right Tunnelling Public Company Limited from Nov 13, 2020 to Sep 28, 2026: 1,427 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.
RT-R adjusted close, 2020 to 2026
- THB 2.86
- All time high, 2021
- THB 0.3100
- 52 week high, THB 0.2800 low
- 1,427
- Daily sessions since 2020
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2020 to 2026 series and minute bars.
RT-R key facts
- Right Tunnelling Public Company Limited (RT-R) closed at THB 0.2900 on Sep 28, 2026 on SET.
- RT-R's all time high close is THB 2.86, set on Apr 23, 2021; its all time low close is THB 0.2800 on Aug 14, 2025.
- RT-R's 52 week range is THB 0.2800 to THB 0.3100.
- RT-R returned -6.5% over the year to Sep 28, 2026 and -86.9% over five years.
- Since Nov 13, 2020 RT-R returned -83%, -25.7% a year compounded.
- RT-R's deepest drawdown was -90.2% from Apr 26, 2021 to Aug 14, 2025.
- DataCedar holds 1,427 daily sessions of RT-R history from Nov 13, 2020 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
RT-R price chart, 2020 to 2026
RT-R returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | 0.0% |
| 3 months | 0.0% |
| 6 months | 0.0% |
| Year to date | +3.6% |
| 1 year | -6.5% |
| 3 years | -65.9% |
| 5 years | -86.9% |
| 10 years | n/a |
| Since Nov 13, 2020 | -82.6% |
| Compound annual growth, 5.9 years | -25.7% |
RT-R records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- THB 2.86 on Apr 23, 2021
- All time low close
- THB 0.2800 on Aug 14, 2025
- 52 week high
- THB 0.3100 on Sep 29, 2025
- 52 week low
- THB 0.2800 on Oct 22, 2025
- Deepest drawdown
- -90.2% from Apr 26, 2021 to Aug 14, 2025, not yet recovered
- Best single session
- +14.1% on Nov 17, 2020
- Worst single session
- -49.4% on Dec 3, 2024
- Volatility, 1 year annualised
- 10.8%
- Sessions closing higher, 1 year
- 0%
- Best calendar year
- 2021, +14%
- Worst calendar year
- 2024, -55%
RT-R 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. 2020 starts on Nov 13, 2020; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | THB 0.2800 | THB 0.2900 | THB 0.2800 | THB 0.2900 | +3.6% | 130K | 186 |
| 2025 | THB 0.3800 | THB 0.3800 | THB 0.2800 | THB 0.2800 | -26.3% | 411.1K | 242 |
| 2024 | THB 0.8500 | THB 0.8500 | THB 0.3700 | THB 0.3800 | -55.3% | 127.5K | 243 |
| 2023 | THB 1.41 | THB 1.45 | THB 0.8200 | THB 0.8500 | -39.6% | 9.1M | 243 |
| 2022 | THB 2.15 | THB 2.24 | THB 1.37 | THB 1.41 | -33.3% | 38.4M | 241 |
| 2021 | THB 1.81 | THB 2.92 | THB 1.79 | THB 2.11 | +13.6% | 169.8M | 241 |
| 2020 | THB 1.67 | THB 2.02 | THB 1.61 | THB 1.86 | n/a | 87.2M | 31 |
RT-R monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | THB 0.2900 | 0.0% |
| August 2026 | THB 0.2900 | 0.0% |
| July 2026 | THB 0.2900 | 0.0% |
| June 2026 | THB 0.2900 | 0.0% |
| May 2026 | THB 0.2900 | 0.0% |
| April 2026 | THB 0.2900 | 0.0% |
| March 2026 | THB 0.2900 | 0.0% |
| February 2026 | THB 0.2900 | +3.6% |
| January 2026 | THB 0.2800 | 0.0% |
| December 2025 | THB 0.2800 | 0.0% |
| November 2025 | THB 0.2800 | 0.0% |
| October 2025 | THB 0.2800 | -9.7% |
About the RT-R data
Daily bars. 1,427 sessions from Nov 13, 2020 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 Nov 13, 2020, 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/RT-R/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on SET
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Common questions
RT-R share price history
