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AltaGas (ATGFF) Stock Chart & Stock Price History

AltaGas logo
$39.29 0.00 (0.00%)
As of 05/22/2026 03:27 PM Eastern

AltaGas Stock Price Performance

The AltaGas (ATGFF) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 44.72%, with a year-to-date return of 28.90%. In the past month, the stock has increased 8.18%, reflecting recent market activity.

As of the latest close, AltaGas traded at $39.29 with a market cap of and volume of 518 shares. Five years ago, the stock traded at $19.69, representing a 99.54% increase over that period. At the time, it had a market cap of and a volume of 6,476 shares.

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5 Day
Performance
+1.71%
1 Month
Performance
+8.18%
3 Month
Performance
+17.63%
Year-To-Date
Performance
+28.90%
1 Year
Performance
+44.72%
5 Year
Performance
+99.54%

ATGFF Stock Chart for Monday, May, 25, 2026

AltaGas Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
05/25/2026$39.29$39.29$39.30$39.29518 shs$0.00
05/22/2026$38.82$39.29
+1.21%
$39.30$39.29518 shs$0.00
05/21/2026$38.63$38.82
+0.49%
$39.10$38.823,274 shs$0.00
05/20/2026$39.24$38.63
-1.55%
$39.00$38.634,703 shs$0.00
05/19/2026$38.68$39.24
+1.45%
$39.24$38.84738 shs$0.00
05/18/2026$38.68$38.68
-0.01%
$38.68$38.58699 shs$0.00
05/15/2026$38.42$38.68
+0.68%
$38.79$38.68812 shs$0.00
05/14/2026$37.97$38.42
+1.19%
$38.42$38.42136 shs$0.00
05/13/2026$37.97$37.97$38.07$37.9516,307 shs$0.00
05/12/2026$37.12$37.97
+2.30%
$38.07$37.9516,307 shs$0.00
05/11/2026$37.12$37.12$37.31$37.1016,240 shs$0.00
05/08/2026$36.78$37.12
+0.91%
$37.31$37.1016,240 shs$0.00
05/07/2026$37.27$36.78
-1.31%
$37.00$36.7817,406 shs$0.00
05/06/2026$38.50$37.27
-3.19%
$37.63$37.2717,916 shs$0.00
05/05/2026N/A$38.50$38.79$38.5038,216 shs$0.00
04/30/2026$37.37$37.45
+0.21%
$38.06$37.45245,470 shs$0.00
04/29/2026$36.93$37.37
+1.19%
$37.37$36.9453,195 shs$0.00
04/28/2026$36.98$36.93
-0.14%
$36.93$36.9329,558 shs$0.00
04/27/2026$36.32$36.98
+1.82%
$36.98$36.8826,518 shs$0.00
04/24/2026$36.44$36.32
-0.33%
$36.32$36.1549,005 shs$0.00

This page (OTCMKTS:ATGFF) was last updated on 5/25/2026 by MarketBeat.com Staff.
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