Other US listings · ALRTF · stock
ALR Technologies SG Ltd. (ALRTF) stock price history
Every Other US listings trading session of ALR Technologies SG Ltd. from Dec 23, 1998 to Jul 17, 2026: 6,932 daily bars, adjusted for splits and dividends, with minute bars arriving as capture begins. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
ALRTF adjusted close, 1998 to 2026
- $2.38
- All time high, 1999
- $0.0250
- 52 week high, $0.0033 low
- 6,932
- Daily sessions since 1998
Last updated Jul 17, 2026, the last stored session. Refreshes after each trading day. Full 1998 to 2026 series and minute bars.
ALRTF key facts
- ALR Technologies SG Ltd. (ALRTF) closed at $0.0204 on Jul 17, 2026 on Other US listings.
- ALRTF's all time high close is $2.38, set on Jan 27, 1999; its all time low close is $0.0006 on Dec 13, 2016.
- ALRTF's 52 week range is $0.0033 to $0.0250.
- ALRTF returned +482.9% over the year to Jul 17, 2026 and -67.1% over five years.
- Over ten years ALRTF returned +1,100%, +28.2% a year compounded.
- ALRTF's deepest drawdown was -100.0% from Jan 28, 1999 to Dec 13, 2016.
- DataCedar holds 6,932 daily sessions of ALRTF history from Dec 23, 1998, adjusted for splits and dividends, served by the API under a key.
ALRTF price chart, 1998 to 2026
ALRTF returns
Price return from the last close on or before the window start to Jul 17, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +35.1% |
| 3 months | +15.3% |
| 6 months | +14.6% |
| Year to date | +29.5% |
| 1 year | +482.9% |
| 3 years | -41.7% |
| 5 years | -67.1% |
| 10 years | +1,100% |
| Since Dec 23, 1998 | -77.3% |
| Compound annual growth, 27.6 years | -5.2% |
ALRTF records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $2.38 on Jan 27, 1999
- All time low close
- $0.0006 on Dec 13, 2016
- 52 week high
- $0.0250 on Sep 29, 2025
- 52 week low
- $0.0033 on Jul 18, 2025
- Deepest drawdown
- -100.0% from Jan 28, 1999 to Dec 13, 2016, not yet recovered
- Best single session
- +12,718% on Sep 19, 2017
- Worst single session
- -79.7% on Apr 25, 2025
- Volatility, 1 year annualised
- 259.6%
- Sessions closing higher, 1 year
- 31%
- Best calendar year
- 2017, +6,733%
- Worst calendar year
- 2016, -83%
ALRTF 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. 1998 starts on Dec 23, 1998; 2026 runs to Jul 17, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $0.0180 | $0.0225 | $0.0092 | $0.0204 | +27.5% | 4.2M | 135 |
| 2025 | $0.0090 | $0.0250 | $0.0011 | $0.0160 | +113.3% | 24.1M | 250 |
| 2024 | $0.0200 | $0.0350 | $0.0030 | $0.0075 | -62.5% | 9M | 252 |
| 2023 | $0.0690 | $0.0720 | $0.0113 | $0.0200 | -69.2% | 9.7M | 250 |
| 2022 | $0.0600 | $0.2800 | $0.0250 | $0.0650 | +8.3% | 16M | 251 |
| 2021 | $0.0510 | $0.0750 | $0.0450 | $0.0600 | +20.0% | 31.7M | 252 |
| 2020 | $0.0172 | $0.0870 | $0.0172 | $0.0500 | +193.3% | 27.8M | 253 |
| 2019 | $0.0360 | $0.0525 | $0.0074 | $0.0170 | -51.3% | 15.6M | 252 |
| 2018 | $0.0400 | $0.0740 | $0.0260 | $0.0350 | -14.6% | 48.4M | 251 |
| 2017 | $0.0013 | $0.1479 | $0.0006 | $0.0410 | +6,733% | 166.4M | 251 |
| 2016 | $0.0036 | $0.0065 | $0.0006 | $0.0006 | -83.3% | 7.6M | 252 |
| 2015 | $0.0160 | $0.0215 | $0.0031 | $0.0036 | -77.5% | 17.9M | 252 |
| 2014 | $0.0210 | $0.0599 | $0.0121 | $0.0160 | -23.8% | 15.9M | 252 |
| 2013 | $0.0330 | $0.0550 | $0.0200 | $0.0210 | -36.4% | 10.9M | 252 |
| 2012 | $0.0800 | $0.1199 | $0.0170 | $0.0330 | -58.7% | 10.6M | 250 |
| 2011 | $0.0700 | $0.2400 | $0.0600 | $0.0800 | 0.0% | 17.8M | 252 |
| 2010 | $0.0350 | $0.1000 | $0.0151 | $0.0800 | +33.3% | 18.9M | 252 |
| 2009 | $0.0500 | $0.2800 | $0.0150 | $0.0600 | +20.0% | 14.4M | 252 |
| 2008 | $0.1900 | $0.2000 | $0.0210 | $0.0500 | -73.7% | 2.4M | 253 |
| 2007 | $0.0500 | $0.2500 | $0.0400 | $0.1900 | +375.0% | 12.3M | 251 |
| 2006 | $0.0800 | $0.2200 | $0.0400 | $0.0400 | -50.0% | 4.3M | 251 |
| 2005 | $0.0420 | $0.2000 | $0.0350 | $0.0800 | +90.5% | 2.3M | 252 |
| 2004 | $0.0800 | $0.1400 | $0.0200 | $0.0420 | -53.3% | 4.3M | 252 |
| 2003 | $0.1900 | $0.3900 | $0.0700 | $0.0900 | -52.6% | 5.9M | 252 |
| 2002 | $0.0700 | $0.4300 | $0.0700 | $0.1900 | +137.5% | 8.2M | 252 |
| 2001 | $0.1800 | $0.3000 | $0.0300 | $0.0800 | -55.6% | 9.1M | 248 |
| 2000 | $0.0620 | $0.7400 | $0.0100 | $0.1800 | +227.3% | 11M | 252 |
| 1999 | $0.0900 | $2.38 | $0.0550 | $0.0550 | -38.9% | 52.2M | 252 |
| 1998 | $0.0900 | $0.1000 | $0.0900 | $0.0900 | n/a | 40K | 6 |
ALRTF monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| July 2026 | $0.0204 | +20.0% |
| June 2026 | $0.0170 | -4.0% |
| May 2026 | $0.0177 | +47.5% |
| April 2026 | $0.0120 | +1.2% |
| March 2026 | $0.0119 | -3.6% |
| February 2026 | $0.0123 | -12.1% |
| January 2026 | $0.0140 | -12.5% |
| December 2025 | $0.0160 | +33.3% |
| November 2025 | $0.0120 | -40.0% |
| October 2025 | $0.0200 | +34.2% |
| September 2025 | $0.0149 | +49.0% |
| August 2025 | $0.0100 | +17.6% |
About the ALRTF data
Daily bars. 6,932 sessions from Dec 23, 1998 to Jul 17, 2026, one row per Other US listings 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. Not stored for this listing yet. Minute history is captured forward from the day collection begins for a symbol and is never backfilled.
Time and currency. Session dates are Other US listings trading days; minute timestamps are UTC. Prices are in USD. 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 23, 1998, 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/ALRTF/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Other US listings
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Common questions
ALRTF share price history
