Diploma

DPLM.L · United Kingdom

Diploma traded $62.5M (converted to USD) on 23 Oct 2026, 1.5× its 20-session average.

504 trading days of history, to 2026-10-23 · all values converted to USD

Last close

$92.11

23 Oct

1-day change

-5.2%

vs previous close

Market cap

$12.4B

as of 23 Oct

Turnover

0.51%

of market cap traded

Dollar volume

$62.5M

as of 23 Oct

vs prior 20 sessions

1.5×

as of 23 Oct

Share of market volume

0.84%

as of 23 Oct

Volatility

30.6%

annualised

Infinity volume insights

since 16 April 2025

Every session our rules flagged for this company since 16 April 2025: 17. Those marked “In the feed” were published in the daily feed at the time; the rest are computed with the rules in use now. The feed shows a few a day across every market, so most never appear there. We began tracking this company on 16 October 2026; findings before then are marked “Before we tracked it”: it traded that way, and we were not yet watching.

2026-08-28Before we tracked it
Diploma had its heaviest session in the 465 sessions on record
Above the previous high of $161.1M. $1.0B against a 20-day average of $44.7M, on a rising price (+0.55%). Turnover 7.6% of market cap, 6.4 times its own mark for the past year. The price moved +0.55% on that volume. Dollar volume 22.6× normal; turnover 7.6% of market cap (22.6× its usual turnover).

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Volume by window

	Dollar volume	vs prior 20 sessions
Last session	$63M	1.5×
Week	For members · Sign in
Month

Sessions to 23 Oct.

Price and dollar volume

Bars coloured by direction

The last three months, one point a week (the week's last close and its total dollar volume).

How these are measured

Turnover: — dollar volume over market cap; how hard this name is traded relative to its size.
Vs prior 20 sessions: — above 1 means heavier trading than in the 20 sessions before it.
Share of market volume: — of the 76 names tracked in United Kingdom, not the whole market.
Volatility: — from daily returns over the held history. Indicative, not a risk model.
Market cap: — the latest session's close × shares outstanding, in USD. Each day in the history has its own, from that day's close; the share count is refreshed monthly.

Prices and volume via the daily pipeline, converted to USD. USD values converted at ECB reference rates.

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