If you invested 1000 GBp in Diploma PLC (DPLM.L) 10 years ago, it would be worth 9,536.65 GBp as of October 21, 2026, based on a reinvested dividends scenario. Over the same period, a 1000 GBp investment made 5 years ago would be worth 2,750.25 GBp, while 1000 GBp invested 1 year ago would be worth 1,400.06 GBp. This corresponds to total returns of 853.66%, 175.03%, 40.01%, respectively, with annualized returns of 25.28%, 22.41%, 40.01%.
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 |
|---|---|---|---|---|---|---|
| October 20, 2026 | 7,760 | 7,485 | 7,485 | 7,785 | 7,480 | 403,283 |
| October 19, 2026 | 7,865 | 7,800 | 7,800 | 7,870 | 7,780 | 210,550 |
| October 16, 2026 | 7,850 | 7,890 | 7,890 | 7,950 | 7,810 | 429,670 |
| October 15, 2026 | 7,860 | 7,815 | 7,815 | 7,885 | 7,721.04 | 360,017 |
| October 14, 2026 | 7,925 | 7,930 | 7,930 | 7,955 | 7,870 | 250,525 |
| October 13, 2026 | 7,880 | 7,860 | 7,860 | 7,970 | 7,845 | 233,663 |
| October 12, 2026 | 7,785 | 7,870 | 7,870 | 7,870 | 7,775 | 240,390 |
| October 09, 2026 | 7,805 | 7,785 | 7,785 | 7,830 | 7,724.31 | 374,555 |
| October 08, 2026 | 7,625 | 7,750 | 7,750 | 7,765 | 7,540 | 506,708 |
| October 07, 2026 | 7,795 | 7,700 | 7,700 | 7,810 | 7,655 | 236,936 |
| October 06, 2026 | 7,940 | 7,860 | 7,860 | 7,980 | 7,850 | 270,288 |
| October 05, 2026 | 7,740 | 7,870 | 7,870 | 7,890 | 7,680.98 | 580,086 |
| October 02, 2026 | 7,735 | 7,775 | 7,775 | 7,820 | 7,716.37 | 243,710 |
| October 01, 2026 | 7,700 | 7,690 | 7,690 | 7,735 | 7,645 | 859,206 |
| September 30, 2026 | 7,860 | 7,725 | 7,725 | 7,872.5 | 7,700 | 414,944 |
| September 29, 2026 | 7,735 | 7,825 | 7,825 | 7,910 | 7,735 | 545,064 |
| September 28, 2026 | 7,790 | 7,710 | 7,710 | 7,860 | 7,710 | 245,731 |
| September 25, 2026 | 7,790 | 7,750 | 7,750 | 7,841.33 | 7,690 | 236,577 |
| September 24, 2026 | 7,550 | 7,715 | 7,715 | 7,775 | 7,520 | 378,840 |
| September 23, 2026 | 7,665 | 7,620 | 7,620 | 7,685 | 7,560 | 329,230 |
| September 22, 2026 | 7,510 | 7,625 | 7,625 | 7,645 | 7,470 | 908,579 |
| September 21, 2026 | 7,375 | 7,485 | 7,485 | 7,515 | 7,375 | 596,331 |
| September 18, 2026 | 7,330 | 7,320 | 7,320 | 7,380 | 7,275 | 837,967 |
| September 17, 2026 | 7,180 | 7,330 | 7,330 | 7,345 | 7,180 | 310,680 |
| September 16, 2026 | 7,110 | 7,170 | 7,170 | 7,215 | 7,080 | 455,471 |
| September 15, 2026 | 7,015 | 7,105 | 7,105 | 7,140 | 6,961.44 | 748,877 |
| September 11, 2026 | 7,060 | 7,115 | 7,115 | 7,135 | 7,005 | 1.18M |
| September 10, 2026 | 7,080 | 7,025 | 7,025 | 7,090 | 6,985 | 283,071 |
| September 09, 2026 | 7,105 | 7,085 | 7,085 | 7,150 | 7,050 | 397,331 |
| September 08, 2026 | 7,170 | 7,170 | 7,170 | 7,240 | 7,150 | 422,914 |
| September 07, 2026 | 7,115 | 7,195 | 7,195 | 7,280 | 7,115 | 264,883 |
| September 04, 2026 | 7,150 | 7,120 | 7,120 | 7,188 | 6,990 | 437,548 |
| September 03, 2026 | 7,110 | 7,160 | 7,160 | 7,250 | 7,085 | 1M |
| September 02, 2026 | 7,095 | 7,135 | 7,135 | 7,165 | 7,025 | 546,260 |
| September 01, 2026 | 7,450 | 7,130 | 7,130 | 7,455 | 7,093.48 | 986,730 |
| August 28, 2026 | 7,295 | 7,330 | 7,330 | 7,360 | 7,225 | 9.44M |
| August 27, 2026 | 7,330 | 7,290 | 7,290 | 7,440 | 7,245 | 650,533 |
| August 26, 2026 | 7,250 | 7,355 | 7,355 | 7,440 | 7,210 | 300,421 |
| August 25, 2026 | 7,220 | 7,230 | 7,230 | 7,315 | 7,200 | 257,845 |
| August 24, 2026 | 7,240 | 7,200 | 7,200 | 7,325 | 7,200 | 332,792 |
| August 21, 2026 | 7,170 | 7,200 | 7,200 | 7,212.5 | 7,100 | 392,119 |
| August 20, 2026 | 7,115 | 7,135 | 7,135 | 7,200 | 7,080 | 289,078 |
| August 19, 2026 | 7,165 | 7,105 | 7,105 | 7,170 | 7,065 | 300,206 |
| August 18, 2026 | 7,335 | 7,150 | 7,150 | 7,345 | 7,140 | 335,479 |
| August 17, 2026 | 7,360 | 7,355 | 7,355 | 7,415 | 7,305 | 212,321 |
| August 14, 2026 | 7,390 | 7,370 | 7,370 | 7,425 | 7,345 | 257,369 |
| August 13, 2026 | 7,495 | 7,365 | 7,365 | 7,513.31 | 7,365 | 356,458 |
| August 12, 2026 | 7,575 | 7,420 | 7,420 | 7,595 | 7,420 | 297,341 |
| August 11, 2026 | 7,600 | 7,540 | 7,540 | 7,645 | 7,500 | 220,476 |
| August 10, 2026 | 7,685 | 7,580 | 7,580 | 7,715 | 7,560 | 259,198 |
| August 07, 2026 | 7,680 | 7,700 | 7,700 | 7,759.19 | 7,659.44 | 338,414 |
| August 06, 2026 | 7,700 | 7,680 | 7,680 | 7,725 | 7,650 | 204,637 |
| August 05, 2026 | 7,630 | 7,675 | 7,675 | 7,695 | 7,615.72 | 210,163 |
| August 04, 2026 | 7,510 | 7,575 | 7,575 | 7,588.4 | 7,475 | 208,945 |
| August 03, 2026 | 7,360 | 7,480 | 7,480 | 7,480 | 7,350 | 571,188 |
| July 31, 2026 | 7,380 | 7,320 | 7,320 | 7,490 | 7,310 | 321,131 |
| July 30, 2026 | 7,120 | 7,330 | 7,330 | 7,365 | 7,100 | 290,750 |
| July 29, 2026 | 7,445 | 7,110 | 7,110 | 7,460 | 7,110 | 413,346 |
| July 28, 2026 | 7,615 | 7,420 | 7,420 | 7,720 | 7,420 | 483,691 |
| July 27, 2026 | 7,535 | 7,630 | 7,630 | 7,630 | 7,535 | 259,096 |