Diploma has been growing earnings at an average annual rate of 22.9%, while the Trade Distributors industry saw earnings growing at 7.3% annually. Revenues have been growing at an average rate of 16.3% per year. Diploma's return on equity is 18%, and it has net margins of 11.5%.
Key information
22.90%
Earnings growth rate
20.82%
EPS growth rate
Trade Distributors Industry Growth
23.44%
Revenue growth rate
16.35%
Return on equity
17.98%
Net Margin
11.50%
Next Earnings Update
17 Nov 2026
Recent past performance updates
Recent updates
Revenue & Expenses Breakdown
How Diploma makes and spends money. Based on latest reported earnings, on an LTM basis.
Earnings and Revenue History
OTCPK:DPMA.Y Revenue, expenses and earnings (GBP Millions)
Date
Revenue
Earnings
G+A Expenses
R&D Expenses
31 Mar 26
1,647
189
340
0
31 Dec 25
1,586
187
527
0
30 Sep 25
1,525
185
243
0
30 Jun 25
1,489
176
241
0
31 Mar 25
1,454
167
239
0
31 Dec 24
1,409
148
237
0
30 Sep 24
1,363
129
234
0
30 Jun 24
1,310
123
227
0
31 Mar 24
1,256
116
221
0
31 Dec 23
1,228
117
216
0
30 Sep 23
1,200
118
212
0
30 Jun 23
1,174
118
209
0
31 Mar 23
1,147
118
206
0
31 Dec 22
1,080
107
193
0
30 Sep 22
1,013
95
181
0
30 Jun 22
942
84
174
0
31 Mar 22
871
74
167
0
31 Dec 21
829
72
171
0
30 Sep 21
787
70
175
0
30 Jun 21
704
60
162
0
31 Mar 21
620
50
150
0
31 Dec 20
579
50
136
0
30 Sep 20
538
49
123
0
30 Jun 20
553
56
122
0
31 Mar 20
568
63
121
0
31 Dec 19
556
63
117
0
30 Sep 19
545
62
113
0
30 Jun 19
528
60
109
0
31 Mar 19
511
58
106
0
31 Dec 18
498
56
103
0
30 Sep 18
485
54
100
0
30 Jun 18
477
52
98
0
31 Mar 18
470
50
96
0
31 Dec 17
461
49
95
0
30 Sep 17
452
48
93
0
30 Jun 17
436
46
90
0
31 Mar 17
421
44
88
0
31 Dec 16
402
41
85
0
30 Sep 16
383
38
82
0
30 Jun 16
366
37
78
0
31 Mar 16
350
37
74
0
31 Dec 15
342
37
71
0
30 Sep 15
334
37
68
0
30 Jun 15
327
37
66
0
Quality Earnings: DPMA.Y has high quality earnings.
Growing Profit Margin: DPMA.Y's current net profit margins (11.5%) are lower than last year (11.5%).
Free Cash Flow vs Earnings Analysis
Past Earnings Growth Analysis
Earnings Trend: DPMA.Y's earnings have grown significantly by 22.9% per year over the past 5 years.
Accelerating Growth: DPMA.Y's earnings growth over the past year (13.1%) is below its 5-year average (22.9% per year).
Earnings vs Industry: DPMA.Y earnings growth over the past year (13.1%) exceeded the Trade Distributors industry 3.9%.
Return on Equity
High ROE: DPMA.Y's Return on Equity (18%) is considered low.
Return on Assets
Return on Capital Employed
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Company Analysis and Financial Data Status
Data
Last Updated (UTC time)
Company Analysis
2026/05/21 17:06
End of Day Share Price
2026/05/21 00:00
Earnings
2026/03/31
Annual Earnings
2025/09/30
Data Sources
The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.
* Example for US securities, for non-US equivalent regulatory forms and sources are used.
Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.
Analysis Model and Snowflake
Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.
Learn about the world class team who designed and built the Simply Wall St analysis model.
Industry and Sector Metrics
Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.
Analyst Sources
Diploma PLC is covered by 26 analysts. 15 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.