SUMCO Corp.

3436.T · Japan

SUMCO Corp. traded $245.3M (converted to USD) on 23 Oct 2026, 1.1× its 20-session average.

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

Last close

$14.97

23 Oct

1-day change

-1.5%

vs previous close

Market cap

$5.2B

as of 23 Oct

Turnover

4.7%

of market cap traded

Dollar volume

$245.3M

as of 23 Oct

vs prior 20 sessions

1.1×

as of 23 Oct

Share of market volume

0.57%

as of 23 Oct

Volatility

72.5%

annualised

Infinity volume insights

since 27 March 2025

Every session our rules flagged for this company since 27 March 2025: 21. 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.

2026-07-13Before we tracked it
SUMCO Corp. had its heaviest session in the 436 sessions on record
Above the previous high of $921.5M. $1.3B against a 20-day average of $445.9M, on a falling price (-2.3%). Dollar volume 2.9× normal; turnover 11.6% of market cap (2.5× its usual turnover).

The latest is shown; the other 20 open with the full page.

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Volume by window

	Dollar volume	vs prior 20 sessions
Last session	$245M	1.1×
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 110 names tracked in Japan, 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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