TSX:COST Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 18, 2026	39.76	39.96	39.71	39.87	39.87	0.23%	52,580
Sep 17, 2026	39.90	39.90	39.53	39.78	39.78	-	117,555
Sep 16, 2026	40.06	40.15	39.73	39.78	39.78	-0.75%	142,406
Sep 15, 2026	40.85	40.85	40.07	40.08	40.08	-1.96%	84,151
Sep 14, 2026	40.77	41.00	40.56	40.88	40.88	1.39%	119,688
Sep 11, 2026	40.36	40.36	40.11	40.32	40.32	0.35%	40,738
Sep 10, 2026	40.26	40.59	40.03	40.18	40.18	-0.05%	64,982
Sep 9, 2026	40.40	40.45	40.01	40.20	40.20	-0.89%	94,296
Sep 8, 2026	40.74	40.74	40.35	40.56	40.56	-0.54%	150,150
Sep 4, 2026	41.27	41.27	40.73	40.78	40.78	-1.02%	169,299
Sep 3, 2026	41.25	41.44	40.77	41.20	41.20	-0.27%	122,944
Sep 2, 2026	41.69	41.69	41.00	41.31	41.31	-1.27%	134,199
Sep 1, 2026	42.06	42.36	41.65	41.84	41.84	-0.43%	61,781
Aug 31, 2026	42.11	42.21	41.90	42.02	42.02	-0.12%	53,032
Aug 28, 2026	41.92	42.44	41.77	42.07	42.07	0.89%	97,456
Aug 27, 2026	42.27	42.27	41.59	41.70	41.70	-2.09%	117,327
Aug 26, 2026	42.71	42.86	42.50	42.59	42.59	-0.33%	18,801
Aug 25, 2026	43.07	43.13	42.73	42.73	42.73	-1.11%	45,730
Aug 24, 2026	42.36	43.37	42.36	43.21	43.21	2.32%	80,185
Aug 21, 2026	41.68	42.31	41.66	42.23	42.23	1.47%	56,048
Aug 20, 2026	41.92	42.07	41.30	41.62	41.62	-2.32%	111,157
Aug 19, 2026	42.78	43.53	42.60	42.61	42.61	-0.37%	59,400
Aug 18, 2026	42.90	43.25	42.61	42.77	42.77	0.71%	78,643
Aug 17, 2026	42.39	42.56	42.29	42.47	42.47	-0.79%	46,520
Aug 14, 2026	42.65	43.00	42.65	42.81	42.81	-0.07%	106,260
Aug 13, 2026	42.57	42.85	42.33	42.84	42.84	1.23%	51,140
Aug 12, 2026	41.80	42.41	41.74	42.32	42.32	0.52%	48,169
Aug 11, 2026	42.41	42.51	41.83	42.10	42.10	-0.80%	88,398
Aug 10, 2026	42.11	42.44	41.95	42.44	42.44	0.45%	52,971
Aug 7, 2026	41.93	42.30	41.80	42.25	42.25	-	54,892
Aug 6, 2026	42.56	43.03	42.00	42.25	42.25	0.52%	74,881
Aug 5, 2026	42.68	42.68	41.71	42.03	42.03	-0.59%	116,434
Aug 4, 2026	42.27	42.37	41.77	42.28	42.28	-0.31%	79,525
Jul 31, 2026	42.05	42.57	41.82	42.41	42.41	-0.35%	44,367
Jul 30, 2026	42.68	42.72	42.35	42.56	42.56	-1.85%	53,135
Jul 29, 2026	43.26	43.60	43.00	43.36	43.36	0.70%	61,741
Jul 28, 2026	43.04	43.97	43.04	43.06	43.06	1.51%	233,732
Jul 27, 2026	41.89	42.63	41.80	42.42	42.42	1.78%	113,805
Jul 24, 2026	41.18	41.76	41.18	41.68	41.68	0.98%	67,910
Jul 23, 2026	41.10	41.34	40.92	41.34	41.27	-0.12%	51,869
Jul 22, 2026	41.66	41.66	41.10	41.39	41.32	-0.22%	66,379
Jul 21, 2026	41.60	41.60	41.29	41.48	41.41	-0.72%	51,013
Jul 20, 2026	41.76	42.20	41.60	41.78	41.71	-0.52%	35,265
Jul 17, 2026	42.75	42.99	41.69	42.00	41.93	-0.50%	70,287
Jul 16, 2026	41.09	42.21	41.09	42.21	42.14	3.15%	129,450
Jul 15, 2026	41.05	41.41	40.68	40.92	40.86	-0.61%	95,739
Jul 14, 2026	41.31	41.45	41.01	41.17	41.10	-0.39%	54,485
Jul 13, 2026	41.10	41.52	40.96	41.33	41.26	0.98%	127,127
Jul 10, 2026	40.88	40.93	40.55	40.93	40.87	0.32%	125,101
Jul 9, 2026	41.78	41.78	40.56	40.80	40.74	-4.27%	417,656