TSX:ATSX Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Feb 11, 2026	41.13	41.13	41.13	41.13	-	1.86%	28,354
Feb 10, 2026	40.38	40.38	40.38	40.38	40.38	2.23%	28,354
Feb 4, 2026	39.50	39.50	39.50	39.50	39.50	-0.45%	202
Feb 3, 2026	39.68	39.68	39.68	39.68	39.68	4.01%	325
Jan 30, 2026	39.06	39.06	38.08	38.15	38.15	-5.22%	301
Jan 29, 2026	40.25	40.25	40.25	40.25	40.25	0.07%	162
Jan 28, 2026	40.22	40.22	40.22	40.22	40.22	0.42%	118
Jan 23, 2026	40.05	40.05	40.05	40.05	40.05	0.53%	15,000
Jan 21, 2026	39.72	39.84	39.72	39.84	39.84	-0.90%	278
Jan 19, 2026	40.20	40.20	40.20	40.20	40.20	0.98%	100
Jan 16, 2026	40.00	40.00	39.76	39.81	39.81	1.74%	2,584
Jan 9, 2026	39.13	39.13	39.13	39.13	39.13	1.22%	200
Jan 8, 2026	38.66	38.66	38.66	38.66	38.66	0.31%	101
Jan 7, 2026	38.54	38.54	38.54	38.54	38.54	0.39%	100
Jan 5, 2026	38.39	38.39	38.39	38.39	38.39	2.21%	200
Jan 2, 2026	37.56	37.56	37.56	37.56	37.56	-1.39%	100
Dec 31, 2025	38.09	38.09	38.09	38.09	38.09	-0.76%	134
Dec 24, 2025	38.35	38.38	38.35	38.38	38.38	1.11%	200
Dec 18, 2025	37.96	37.96	37.96	37.96	37.96	-1.86%	6,065
Dec 15, 2025	38.68	38.68	38.68	38.68	38.68	4.06%	100
Dec 3, 2025	37.17	37.17	37.17	37.17	37.17	1.01%	114
Dec 2, 2025	36.80	36.80	36.80	36.80	36.80	6.11%	100
Nov 7, 2025	34.68	34.68	34.68	34.68	34.68	-0.49%	100
Nov 6, 2025	34.85	34.85	34.85	34.85	34.85	2.32%	200
Oct 21, 2025	34.06	34.06	34.06	34.06	34.06	-1.96%	100
Oct 14, 2025	34.74	34.74	34.74	34.74	34.74	1.40%	1,500
Oct 6, 2025	34.26	34.26	34.26	34.26	34.26	0.26%	220
Sep 24, 2025	34.19	34.19	34.17	34.17	34.17	0.09%	4,112
Sep 19, 2025	34.14	34.14	34.14	34.14	34.14	1.01%	106
Sep 18, 2025	33.80	33.80	33.80	33.80	33.80	0.30%	1,600
Sep 17, 2025	33.70	33.70	33.70	33.70	33.70	0.42%	200
Sep 9, 2025	33.50	33.56	33.50	33.56	33.56	0.48%	319
Sep 4, 2025	33.40	33.40	33.40	33.40	33.40	0.30%	214
Sep 3, 2025	33.30	33.30	33.30	33.30	33.30	2.97%	505
Aug 21, 2025	32.34	32.34	32.34	32.34	32.34	1.99%	253