If you invested 1000 GBp in Diploma PLC (DPLM.L) 10 years ago, it would be worth 10,519.82 GBp as of June 22, 2026, based on a reinvested dividends scenario. Over the same period, a 1000 GBp investment made 5 years ago would be worth 2,635.47 GBp, while 1000 GBp invested 1 year ago would be worth 1,525.27 GBp. This corresponds to total returns of 951.98%, 163.55%, 52.53%, respectively, with annualized returns of 26.52%, 21.37%, 52.53%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| June 19, 2026 | 7,120 | 7,200 | 7,200 | 7,200 | 7,095 | 858,351 |
| June 18, 2026 | 7,055 | 7,135 | 7,135 | 7,140 | 7,020 | 397,451 |
| June 17, 2026 | 7,060 | 7,040 | 7,040 | 7,095 | 6,990 | 287,356 |
| June 16, 2026 | 7,015 | 7,040 | 7,040 | 7,120 | 6,980 | 463,449 |
| June 15, 2026 | 6,990 | 6,980 | 6,980 | 7,060 | 6,910 | 326,222 |
| June 12, 2026 | 6,975 | 6,885 | 6,885 | 6,995 | 6,845 | 341,587 |
| June 11, 2026 | 6,965 | 6,850 | 6,850 | 6,995 | 6,840 | 250,050 |
| June 10, 2026 | 7,035 | 6,975 | 6,975 | 7,093.1 | 6,915 | 264,225 |
| June 09, 2026 | 7,060 | 7,000 | 7,000 | 7,191.87 | 7,000 | 228,252 |
| June 08, 2026 | 6,925 | 7,060 | 7,060 | 7,070 | 6,895 | 643,137 |
| June 05, 2026 | 7,160 | 7,020 | 7,020 | 7,160 | 7,010 | 230,923 |
| June 04, 2026 | 7,040 | 7,130 | 7,130 | 7,135 | 7,010 | 231,131 |
| June 03, 2026 | 7,035 | 7,050 | 7,050 | 7,050 | 6,960 | 268,284 |
| June 02, 2026 | 7,000 | 7,035 | 7,035 | 7,055 | 6,965 | 356,102 |
| June 01, 2026 | 6,990 | 6,900 | 6,900 | 7,035 | 6,830 | 607,246 |
| May 29, 2026 | 6,915 | 6,990 | 6,990 | 7,030 | 6,855 | 1.53M |
| May 28, 2026 | 6,900 | 6,880 | 6,880 | 6,940 | 6,840 | 417,685 |
| May 27, 2026 | 7,010 | 6,955 | 6,955 | 7,100 | 6,955 | 293,614 |
| May 26, 2026 | 7,055 | 7,010 | 7,010 | 7,089.95 | 6,980 | 260,414 |
| May 22, 2026 | 6,915 | 7,025 | 7,025 | 7,035 | 6,875 | 332,348 |
| May 21, 2026 | 6,860 | 6,845 | 6,845 | 6,870 | 6,770 | 256,271 |
| May 20, 2026 | 6,825 | 6,870 | 6,870 | 6,935 | 6,700 | 492,905 |
| May 19, 2026 | 6,955 | 6,835 | 6,835 | 7,090 | 6,790 | 746,817 |
| May 18, 2026 | 6,670 | 6,625 | 6,625 | 6,745 | 6,615 | 713,044 |
| May 15, 2026 | 6,750 | 6,720 | 6,720 | 6,775 | 6,643.94 | 359,293 |
| May 14, 2026 | 6,700 | 6,855 | 6,855 | 6,855 | 6,695 | 270,064 |
| May 13, 2026 | 6,735 | 6,685 | 6,685 | 6,765 | 6,600 | 373,923 |
| May 12, 2026 | 6,840 | 6,690 | 6,690 | 6,870 | 6,690 | 945,912 |
| May 11, 2026 | 6,925 | 6,900 | 6,900 | 6,970 | 6,875 | 424,135 |
| May 08, 2026 | 7,000 | 6,945 | 6,945 | 7,045 | 6,925 | 340,168 |
| May 07, 2026 | 7,230 | 7,035 | 7,035 | 7,295 | 7,035 | 356,139 |
| May 06, 2026 | 7,050 | 7,225 | 7,225 | 7,225 | 7,015 | 490,158 |
| May 05, 2026 | 6,900 | 6,980 | 6,980 | 6,995 | 6,890 | 387,971 |
| May 01, 2026 | 6,905 | 6,975 | 6,975 | 6,975 | 6,855 | 879,185 |
| April 30, 2026 | 6,810 | 6,940 | 6,940 | 7,030 | 6,780 | 675,516 |
| April 29, 2026 | 6,930 | 6,850 | 6,850 | 6,950 | 6,850 | 213,066 |
| April 28, 2026 | 7,025 | 6,945 | 6,945 | 7,040 | 6,925 | 1.22M |
| April 27, 2026 | 6,995 | 6,905 | 6,905 | 7,035 | 6,895 | 268,456 |
| April 24, 2026 | 6,995 | 6,995 | 6,995 | 7,060 | 6,955 | 258,284 |
| April 23, 2026 | 6,895 | 7,015 | 7,015 | 7,035 | 6,885 | 610,589 |
| April 22, 2026 | 6,935 | 6,975 | 6,975 | 7,025 | 6,904.69 | 255,248 |
| April 21, 2026 | 6,935 | 6,920 | 6,920 | 6,945 | 6,875 | 419,610 |
| April 20, 2026 | 6,910 | 6,900 | 6,900 | 6,920 | 6,840 | 496,642 |
| April 17, 2026 | 6,755 | 6,965 | 6,965 | 6,965 | 6,734.99 | 331,143 |
| April 16, 2026 | 6,670 | 6,760 | 6,760 | 6,770 | 6,655 | 424,515 |
| April 15, 2026 | 6,755 | 6,640 | 6,640 | 6,775 | 6,640 | 469,782 |
| April 14, 2026 | 6,700 | 6,760 | 6,760 | 6,795 | 6,700 | 411,491 |
| April 13, 2026 | 6,630 | 6,675 | 6,675 | 6,740 | 6,615 | 291,386 |
| April 10, 2026 | 6,555 | 6,700 | 6,700 | 6,700 | 6,535 | 580,934 |
| April 09, 2026 | 6,460 | 6,590 | 6,590 | 6,615 | 6,445 | 403,926 |
| April 08, 2026 | 6,385 | 6,500 | 6,500 | 6,535 | 6,325 | 454,818 |
| April 07, 2026 | 6,250 | 6,180 | 6,180 | 6,300.1 | 6,135 | 489,618 |
| April 02, 2026 | 6,105 | 6,225 | 6,225 | 6,235 | 6,035 | 367,319 |
| April 01, 2026 | 6,065 | 6,160 | 6,160 | 6,160 | 6,035 | 395,436 |
| March 31, 2026 | 5,805 | 5,965 | 5,965 | 5,970 | 5,805 | 496,310 |
| March 30, 2026 | 5,850 | 5,870 | 5,870 | 5,905 | 5,805 | 226,573 |
| March 27, 2026 | 5,920 | 5,845 | 5,845 | 5,945 | 5,815 | 202,760 |
| March 26, 2026 | 5,960 | 5,920 | 5,920 | 5,965 | 5,900 | 684,231 |
| March 25, 2026 | 5,905 | 5,950 | 5,950 | 5,970.87 | 5,840 | 125,993 |
| March 24, 2026 | 5,855 | 5,865 | 5,865 | 5,905 | 5,815 | 437,871 |