Costain Group PLC (COST.L) LSE

Currency In GBp

COST.L Historical Return

If you invested 1000 GBp in Costain Group PLC (COST.L) 10 years ago, it would be worth 820.47 GBp as of August 22, 2026, based on a reinvested dividends scenario. Over the same period, a 1000 GBp investment made 5 years ago would be worth 3,897.11 GBp, while 1000 GBp invested 1 year ago would be worth 1,739.9 GBp. This corresponds to total returns of -17.95%, 289.71%, 73.99%, respectively, with annualized returns of -1.96%, 31.26%, 73.99%.

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

COST.L Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
August 21, 2026	218	226.5	226.5	228.5	218	694,437
August 20, 2026	229.35	221	221	229.95	219.5	442,094
August 19, 2026	227.75	225.5	225.5	232.5	223	532,731
August 18, 2026	226.6	227.5	227.5	236	221	956,835
August 17, 2026	241	228.5	228.5	241	228.5	642,476
August 14, 2026	236	234.5	234.5	240	228.5	2.73M
August 13, 2026	228.5	229.5	229.5	237.8	219.28	3.03M
August 12, 2026	221	219.5	219.5	226.5	210.5	1.44M
August 11, 2026	217	218.5	218.5	220.5	215	312,497
August 10, 2026	217.61	216.5	216.5	220.15	214.5	281,323
August 07, 2026	212.6	215.5	215.5	217.05	209	377,695
August 06, 2026	208	215.5	215.5	217.5	208	364,004
August 05, 2026	204	214	214	216	204	453,157
August 04, 2026	201.5	211.5	211.5	215.25	201.5	520,254
August 03, 2026	202	212.5	212.5	215	202	252,265
July 31, 2026	210.5	211	211	216.5	210.5	719,256
July 30, 2026	210.43	211.5	211.5	213	204	710,085
July 29, 2026	209	208	208	213	206.5	700,715
July 28, 2026	219	211.5	211.5	219	206.5	463,123
July 27, 2026	218.1	214	214	220.5	214	354,553
July 23, 2026	217.5	216	216	219	215	325,558
July 22, 2026	206.5	218	218	220	206.5	524,778
July 21, 2026	212	215	215	218.5	211	1M
July 20, 2026	205	210	210	217.5	205	628,570
July 17, 2026	211	210	210	212.5	209	592,758
July 16, 2026	212	213	213	213	208.5	688,989
July 15, 2026	206	211.5	211.5	215.5	204	959,780
July 14, 2026	218.5	207	207	218.5	204.36	415,073
July 13, 2026	207.5	209	209	209.5	205	557,967
July 10, 2026	209.5	209	209	210	207	1.04M
July 09, 2026	214	209.5	209.5	214	205.5	2.87M
July 08, 2026	208	205	205	209	203.5	2.35M
July 07, 2026	218	209	209	218	207.5	1.32M
July 06, 2026	207.5	217.5	217.5	218	207.5	1.89M
July 03, 2026	209	217	217	219.5	209	3.95M
July 02, 2026	213	210.5	210.5	216	210.5	936,284
July 01, 2026	204.5	213.5	213.5	213.67	201.5	534,772
June 30, 2026	216	207.5	207.5	216	206.36	338,029
June 29, 2026	214	205.5	205.5	214	204	421,096
June 26, 2026	210.41	210	210	212.55	201	790,424
June 25, 2026	204.88	212	212	214	200	647,688
June 24, 2026	202.5	207	207	209.5	202.5	272,449
June 23, 2026	202.5	206	206	213	202	420,415
June 22, 2026	206.53	210	210	210	204	609,419
June 19, 2026	212.5	207	207	212.5	204.5	2.72M
June 18, 2026	209	210.5	210.5	211.5	206.5	704,607
June 17, 2026	206	210	210	210	203.5	552,794
June 16, 2026	202	204	204	207	200.6	710,652
June 15, 2026	198	202	202	203.5	194	1.39M
June 12, 2026	195	195	195	198.4	189.49	1.13M
June 11, 2026	188.8	193.6	193.6	193.8	186.4	397,102
June 10, 2026	190	189	189	190.6	185.8	382,393
June 09, 2026	192.6	189	189	194.2	189	415,936
June 08, 2026	187	192.6	192.6	195	187	487,918
June 05, 2026	191	193.8	193.8	197.75	191	872,722
June 04, 2026	194.6	194.8	194.8	195	186.4	531,541
June 03, 2026	192.52	193.8	193.8	195	186.2	661,632
June 02, 2026	189.13	192.6	192.6	194	187.4	382,533
June 01, 2026	196	189.8	189.8	196	188	746,506
May 29, 2026	199.8	193.8	193.8	199.8	189.6	687,179