TransAlta Corporation (TAC) NYSE

Currency In USD

TAC Historical Return

If you invested $1000 in TransAlta Corporation (TAC) 10 years ago, it would be worth $3,113.4 as of September 12, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,304.54, while $1000 invested 1 year ago would be worth $962.55. This corresponds to total returns of 211.34%, 30.45%, -3.75%, respectively, with annualized returns of 12.02%, 5.46%, -3.75%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

TAC Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
September 11, 2026	12.27	12.08	12.08	12.28	12.04	2.54M
September 10, 2026	12.24	12.18	12.18	12.31	12.06	1.1M
September 09, 2026	12.34	12.35	12.35	12.5	12.25	744,747
September 08, 2026	12.05	12.41	12.41	12.52	11.98	1.02M
September 04, 2026	11.79	11.96	11.96	12.08	11.75	1.05M
September 03, 2026	11.91	11.81	11.81	11.97	11.72	1.26M
September 02, 2026	11.74	11.84	11.84	11.9	11.66	1.12M
September 01, 2026	12.09	11.77	11.77	12.12	11.69	985,164
August 31, 2026	12.21	12.09	12.09	12.28	12.01	922,247
August 28, 2026	12.54	12.19	12.19	12.56	12.1	851,108
August 27, 2026	12.65	12.5	12.5	12.72	12.37	941,450
August 26, 2026	12.18	12.64	12.64	12.75	12.18	1.1M
August 25, 2026	12.16	12.25	12.25	12.29	12.1	887,117
August 24, 2026	12.16	12.1	12.1	12.16	11.87	1.05M
August 21, 2026	12.67	12.21	12.21	12.75	12.19	971,260
August 20, 2026	12.29	12.59	12.59	12.84	12.29	1.09M
August 19, 2026	12.57	12.38	12.38	12.61	12.29	924,786
August 18, 2026	12.62	12.47	12.47	12.68	12.44	809,306
August 17, 2026	12.82	12.71	12.71	12.84	12.66	729,322
August 14, 2026	12.6	12.79	12.79	12.88	12.6	768,729
August 13, 2026	12.39	12.61	12.61	12.63	12.38	884,715
August 12, 2026	12.5	12.4	12.4	12.67	12.3	3.84M
August 11, 2026	12.3	12.48	12.48	12.54	12.3	1.87M
August 10, 2026	12.39	12.26	12.26	12.47	12.22	943,077
August 07, 2026	12.52	12.43	12.43	12.71	12.41	988,064
August 06, 2026	12.67	12.48	12.48	12.73	12.41	1.44M
August 05, 2026	12.79	12.67	12.67	12.92	12.66	1.22M
August 04, 2026	12.48	12.76	12.76	12.85	12.31	1.75M
August 03, 2026	12.2	12.34	12.34	12.52	12.1	578,874
July 31, 2026	12.88	12.5	12.5	13	12.48	2.01M
July 30, 2026	12.78	12.86	12.86	12.92	12.56	1.32M
July 29, 2026	12.82	12.43	12.43	12.84	12.33	1.4M
July 28, 2026	13.36	12.74	12.74	13.36	12.67	1.41M
July 27, 2026	13.73	13.45	13.45	13.73	13.3	984,626
July 24, 2026	14.05	13.72	13.72	14.07	13.69	704,756
July 23, 2026	14.04	14.11	14.11	14.18	13.91	847,036
July 22, 2026	14	14.04	14.04	14.12	13.65	743,622
July 21, 2026	13.91	13.99	13.99	14.02	13.69	636,540
July 20, 2026	13.37	13.72	13.72	13.75	13.27	942,198
July 17, 2026	13.14	13.26	13.26	13.45	13.05	718,815
July 16, 2026	13.54	13.24	13.24	13.64	13.15	638,955
July 15, 2026	13.89	13.62	13.62	14.04	13.48	1.28M
July 14, 2026	13.93	13.93	13.93	14.19	13.87	1.07M
July 13, 2026	14.23	13.93	13.93	14.26	13.87	827,372
July 10, 2026	14.49	14.22	14.22	14.51	14.22	921,861
July 09, 2026	14.58	14.52	14.52	14.85	14.3	1.17M
July 08, 2026	14	14.48	14.48	14.55	13.97	1.97M
July 07, 2026	13.54	14.06	14.06	14.09	13.53	1.02M
July 06, 2026	13.72	13.61	13.61	13.97	13.55	928,842
July 02, 2026	13.73	13.47	13.47	13.84	13.31	1.46M
July 01, 2026	13.67	13.6	13.6	13.86	13.52	762,651
June 30, 2026	13.48	13.83	13.83	13.94	13.48	1.06M
June 29, 2026	13.85	13.62	13.62	13.88	13.47	1.26M
June 26, 2026	13.66	13.8	13.8	13.88	13.66	801,203
June 25, 2026	13.89	13.81	13.81	13.98	13.59	863,912
June 24, 2026	13.59	13.69	13.69	13.93	13.51	1.5M
June 23, 2026	13.56	13.69	13.69	13.73	13.52	939,025
June 22, 2026	13.79	13.85	13.85	14.06	13.7	1.1M
June 18, 2026	13.77	13.74	13.74	13.85	13.51	1.66M
June 17, 2026	13.47	13.56	13.56	13.88	13.46	1.59M