SET · ALT · stock

ALT Telecom Public Company Limited (ALT) stock price history

Every SET trading session of ALT Telecom Public Company Limited from Jul 4, 2016 to Sep 28, 2026: 2,494 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.

Get ALT data, free keyYear by year table

ALT adjusted close, 2016 to 2026

ALTALT Telecom Public Company Limited
THB 1.68+55.6% over one year
20182020202220242026
THB 9.77
All time high, 2017
THB 1.96
52 week high, THB 0.9100 low
2,494
Daily sessions since 2016

Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2016 to 2026 series and minute bars.

ALT key facts

  • ALT Telecom Public Company Limited (ALT) closed at THB 1.68 on Sep 28, 2026 on SET.
  • ALT's all time high close is THB 9.77, set on Jan 30, 2017; its all time low close is THB 0.7400 on Apr 8, 2025.
  • ALT's 52 week range is THB 0.9100 to THB 1.96.
  • ALT returned +55.6% over the year to Sep 28, 2026 and -37.3% over five years.
  • Over ten years ALT returned -78%, -14.0% a year compounded.
  • ALT's deepest drawdown was -92.4% from Jan 30, 2017 to Apr 8, 2025.
  • DataCedar holds 2,494 daily sessions of ALT history from Jul 4, 2016 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.

ALT price chart, 2016 to 2026

ALT adjusted close, Jul 4, 2016 to Sep 28, 2026THB 0.7400THB 1.73THB 4.03THB 9.39201620182020202220242026
Adjusted daily close, log scale. 260 sampled points across the full history; the API serves every session.

ALT returns

Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.

PeriodReturn
1 month+2.4%
3 months-7.7%
6 months+61.5%
Year to date+57.0%
1 year+55.6%
3 years-13.4%
5 years-37.3%
10 years-77.9%
Since Jul 4, 2016-76.5%
Compound annual growth, 10.2 years-13.2%

ALT records

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

All time high close
THB 9.77 on Jan 30, 2017
All time low close
THB 0.7400 on Apr 8, 2025
52 week high
THB 1.96 on Jul 14, 2026
52 week low
THB 0.9100 on Nov 14, 2025
Deepest drawdown
-92.4% from Jan 30, 2017 to Apr 8, 2025, not yet recovered
Best single session
+27.5% on Aug 13, 2025
Worst single session
-22.8% on Mar 12, 2020
Volatility, 1 year annualised
55.8%
Sessions closing higher, 1 year
40%
Best calendar year
2020, +105%
Worst calendar year
2017, -45%

ALT 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. 2016 starts on Jul 4, 2016; 2026 runs to Sep 28, 2026.

YearOpenHighLowCloseReturnVolumeSessions
2026THB 1.07THB 1.96THB 0.9100THB 1.68+57.0%878.6M186
2025THB 1.05THB 1.49THB 0.6500THB 1.07+1.9%370M242
2024THB 1.62THB 2.00THB 0.9900THB 1.05-33.5%151.1M243
2023THB 2.30THB 2.38THB 1.58THB 1.58-31.9%79.3M243
2022THB 2.42THB 2.74THB 2.14THB 2.32-3.3%475.7M241
2021THB 3.20THB 3.56THB 2.34THB 2.40-25.9%1.2B241
2020THB 1.60THB 4.25THB 1.00THB 3.24+104.7%1.9B243
2019THB 2.78THB 3.50THB 1.40THB 1.58-43.0%40.4M244
2018THB 4.61THB 4.63THB 2.68THB 2.78-39.8%143.1M245
2017THB 8.59THB 9.96THB 4.56THB 4.61-45.4%1.6B242
2016THB 8.06THB 9.25THB 5.64THB 8.44n/a2.9B124

ALT monthly closes, last 12 months

MonthMonth end closeChange
September 2026THB 1.68+2.4%
August 2026THB 1.64-4.1%
July 2026THB 1.71-5.5%
June 2026THB 1.81+16.8%
May 2026THB 1.55+24.0%
April 2026THB 1.25+15.7%
March 2026THB 1.08-1.8%
February 2026THB 1.10-1.8%
January 2026THB 1.12+4.7%
December 2025THB 1.07+10.3%
November 2025THB 0.9700-3.0%
October 2025THB 1.00-16.0%

About the ALT data

Daily bars. 2,494 sessions from Jul 4, 2016 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 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 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 Jul 4, 2016, 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/ALT/bars?timeframe=1Day&adjustment=all&limit=50000" \
  -H "X-API-Key: YOUR_KEY"

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