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 875.34 GBp as of October 22, 2026, based on a reinvested dividends scenario. Over the same period, a 1000 GBp investment made 5 years ago would be worth 4,818.7 GBp, while 1000 GBp invested 1 year ago would be worth 1,674.4 GBp. This corresponds to total returns of -12.47%, 381.87%, 67.44%, respectively, with annualized returns of -1.32%, 36.93%, 67.44%.

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
October 21, 2026	251	254	254	255.5	250.5	482,993
October 20, 2026	250	252	252	257	249	819,712
October 19, 2026	248	254	254	255.5	248	1.24M
October 16, 2026	248.5	253	253	254.5	247	2.12M
October 15, 2026	244.5	246.5	246.5	249.5	241.52	2.74M
October 14, 2026	242	248	248	251	242	1.5M
October 13, 2026	245	243.5	243.5	246.19	241.5	2.3M
October 12, 2026	241	243	243	243.5	240	706,462
October 09, 2026	243	241	241	245	239.5	808,530
October 08, 2026	246.5	240.5	240.5	246.5	232.5	1.28M
October 07, 2026	258	243.5	243.5	258	242	916,951
October 06, 2026	256.2	253.5	253.5	256.5	248	683,502
October 05, 2026	262.95	254	254	263.5	254	1.13M
October 02, 2026	262	262	262	263.5	257	1.42M
October 01, 2026	262	257.5	257.5	262	254	1.52M
September 30, 2026	262.42	260	260	264.5	258	1.17M
September 29, 2026	262.5	260.5	260.5	263	257.5	789,552
September 28, 2026	260	262.5	262.5	265	255.5	990,206
September 25, 2026	256	256	256	259.5	253.5	1.77M
September 24, 2026	250	254	254	256	250	1.31M
September 23, 2026	252	253	253	256	251.5	1.31M
September 22, 2026	254.5	255.5	255.5	257.5	249	7.42M
September 21, 2026	250	254	254	259	250	739,795
September 18, 2026	251	254.5	254.5	255.2	247.5	2.24M
September 17, 2026	242.5	250	250	253	242.5	3.83M
September 16, 2026	225	246.5	246.5	250	225	2.66M
September 15, 2026	223	225.5	225.5	228.66	223	786,908
September 11, 2026	233.5	229	229	233.5	222.5	2.52M
September 10, 2026	224	222.5	222.5	227.33	222	3.69M
September 09, 2026	229.5	226.5	226.5	230	223.5	1.49M
September 08, 2026	231.23	225	225	235.5	219.5	4.19M
September 07, 2026	224.15	225	225	233	224.15	476,774
September 04, 2026	226	227.5	227.5	228	224	585,541
September 03, 2026	232	225	225	232	218	604,829
September 02, 2026	234.5	221.5	221.5	234.5	217	576,207
September 01, 2026	228.14	224	224	230.5	220.5	635,810
August 28, 2026	231.5	230.5	230.5	235	230	1.18M
August 27, 2026	232	230.5	230.5	236	230.5	375,265
August 26, 2026	231.17	232.5	232.5	238	226.5	625,393
August 25, 2026	226.4	231	231	233.5	208.5	649,640
August 24, 2026	230	225.5	225.5	232	224	1.11M
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