LSE · DPLM · stock
Diploma PLC (DPLM) stock price history
Every LSE trading session of Diploma PLC from Jul 1, 1988 to Sep 28, 2026: 9,806 daily bars, adjusted for splits and dividends, with minute bars from Sep 17, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
DPLM adjusted close, 1988 to 2026
- £77.50
- All time high, 2026
- £78.60
- 52 week high, £49.70 low
- 9,806
- Daily sessions since 1988
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 1988 to 2026 series and minute bars.
DPLM key facts
- Diploma PLC (DPLM) closed at £77.10 on Sep 28, 2026 on LSE.
- DPLM's all time high close is £77.50, set on Sep 25, 2026; its all time low close is £0.3474 on Jun 2, 2000.
- DPLM's 52 week range is £49.70 to £78.60.
- DPLM returned +46.3% over the year to Sep 28, 2026 and +169.0% over five years.
- Over ten years DPLM returned +782%, +24.3% a year compounded.
- DPLM's deepest drawdown was -86.0% from Feb 4, 1994 to Jun 2, 2000.
- DataCedar holds 9,806 daily sessions of DPLM history from Jul 1, 1988 and minute bars from Sep 17, 2026, adjusted for splits and dividends, served by the API under a key.
DPLM price chart, 1988 to 2026
DPLM returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +5.2% |
| 3 months | +8.7% |
| 6 months | +31.9% |
| Year to date | +44.0% |
| 1 year | +46.3% |
| 3 years | +156.9% |
| 5 years | +169.0% |
| 10 years | +782.1% |
| Since Jul 1, 1988 | +8,334% |
| Compound annual growth, 38.2 years | +12.3% |
DPLM records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- £77.50 on Sep 25, 2026
- All time low close
- £0.3474 on Jun 2, 2000
- 52 week high
- £78.60 on Sep 28, 2026
- 52 week low
- £49.70 on Mar 17, 2026
- Deepest drawdown
- -86.0% from Feb 4, 1994 to Jun 2, 2000, recovered Jul 12, 2010
- Best single session
- +26.9% on Sep 23, 2020
- Worst single session
- -45.8% on Apr 18, 2000
- Volatility, 1 year annualised
- 28.3%
- Sessions closing higher, 1 year
- 54%
- Growth of 1 since 1988
- 84.3×
- Best calendar year
- 2003, +70%
- Worst calendar year
- 1997, -39%
DPLM price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 1988 starts on Jul 1, 1988; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | £53.29 | £78.60 | £49.70 | £77.10 | +45.6% | 104.3M | 187 |
| 2025 | £42.89 | £56.99 | £35.31 | £52.94 | +24.6% | 78.2M | 253 |
| 2024 | £35.11 | £46.52 | £31.99 | £42.49 | +18.7% | 77.8M | 254 |
| 2023 | £28.14 | £36.41 | £25.23 | £35.81 | +29.1% | 78.3M | 251 |
| 2022 | £34.23 | £34.75 | £20.89 | £27.74 | -17.7% | 57.8M | 250 |
| 2021 | £22.10 | £35.01 | £20.12 | £33.71 | +53.9% | 52.4M | 253 |
| 2020 | £20.48 | £24.40 | £11.64 | £21.90 | +8.3% | 63.6M | 254 |
| 2019 | £12.28 | £20.93 | £11.43 | £20.22 | +67.3% | 48.4M | 253 |
| 2018 | £12.30 | £14.81 | £10.38 | £12.09 | -2.9% | 45.5M | 253 |
| 2017 | £10.55 | £12.68 | £9.75 | £12.45 | +20.0% | 32.2M | 252 |
| 2016 | £7.54 | £10.48 | £6.20 | £10.37 | +36.6% | 28M | 253 |
| 2015 | £7.07 | £9.15 | £5.99 | £7.60 | +7.4% | 37.8M | 253 |
| 2014 | £7.10 | £8.01 | £6.03 | £7.08 | +5.1% | 28.3M | 253 |
| 2013 | £5.44 | £7.41 | £5.12 | £6.73 | +21.8% | 30.9M | 253 |
| 2012 | £3.45 | £5.65 | £3.38 | £5.53 | +63.3% | 45.2M | 251 |
| 2011 | £2.77 | £4.13 | £2.44 | £3.39 | +22.5% | 63.6M | 252 |
| 2010 | £1.74 | £2.99 | £1.67 | £2.77 | +57.1% | 66.4M | 253 |
| 2009 | £1.20 | £1.86 | £0.8963 | £1.76 | +41.5% | 51.3M | 253 |
| 2008 | £1.86 | £1.97 | £1.04 | £1.24 | -32.8% | 33.7M | 254 |
| 2007 | £1.77 | £2.27 | £1.58 | £1.85 | +6.2% | 87.6M | 253 |
| 2006 | £1.56 | £1.77 | £1.40 | £1.74 | +12.1% | 76.7M | 252 |
| 2005 | £1.26 | £1.57 | £1.24 | £1.56 | +22.4% | 56.4M | 260 |
| 2004 | £1.05 | £1.31 | £0.9802 | £1.27 | +21.5% | 63M | 262 |
| 2003 | £0.6161 | £1.05 | £0.6022 | £1.05 | +69.7% | 86.4M | 261 |
| 2002 | £0.6218 | £0.7351 | £0.5444 | £0.6161 | -0.9% | 67.9M | 261 |
| 2001 | £0.5143 | £0.6634 | £0.4905 | £0.6218 | +20.9% | 132.6M | 261 |
| 2000 | £0.7345 | £0.8536 | £0.3375 | £0.5143 | -30.0% | 76.6M | 260 |
| 1999 | £0.6508 | £0.9526 | £0.4365 | £0.7345 | +12.9% | 44.6M | 261 |
| 1998 | £0.8882 | £1.08 | £0.5671 | £0.6508 | -26.7% | 112.8M | 261 |
| 1997 | £1.45 | £1.58 | £0.8680 | £0.8882 | -38.8% | 105.7M | 261 |
| 1996 | £1.55 | £1.71 | £1.30 | £1.45 | -6.4% | 63.2M | 262 |
| 1995 | £1.68 | £1.98 | £1.49 | £1.55 | -7.5% | 70.4M | 260 |
| 1994 | £2.18 | £2.48 | £1.64 | £1.68 | -23.2% | 61.1M | 260 |
| 1993 | £1.60 | £2.27 | £1.55 | £2.18 | +36.8% | 66.2M | 261 |
| 1992 | £1.04 | £1.60 | £1.04 | £1.60 | +53.3% | 43.6M | 262 |
| 1991 | £0.8073 | £1.20 | £0.7716 | £1.04 | +28.9% | 55.2M | 261 |
| 1990 | £0.6885 | £0.8627 | £0.6292 | £0.8073 | +17.2% | 0 | 261 |
| 1989 | £0.7321 | £1.02 | £0.5975 | £0.6885 | -5.9% | 0 | 260 |
| 1988 | £0.9141 | £0.9537 | £0.7123 | £0.7321 | n/a | 0 | 131 |
DPLM monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | £77.10 | +5.2% |
| August 2026 | £73.30 | +0.1% |
| July 2026 | £73.20 | +2.7% |
| June 2026 | £71.30 | +2.0% |
| May 2026 | £69.90 | +0.7% |
| April 2026 | £69.40 | +16.3% |
| March 2026 | £59.65 | +5.1% |
| February 2026 | £56.75 | +6.7% |
| January 2026 | £53.20 | +0.5% |
| December 2025 | £52.94 | -3.1% |
| November 2025 | £54.64 | -2.6% |
| October 2025 | £56.09 | +5.7% |
About the DPLM data
Daily bars. 9,806 sessions from Jul 1, 1988 to Sep 28, 2026, one row per LSE trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Sep 17, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are LSE trading days; minute timestamps are UTC. Prices are in GBP. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Jul 1, 1988, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/DPLM/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on LSE
Common questions
DPLM share price history
