Teradyne

TER · United States

Teradyne traded $823.6M on 23 Oct 2026, 0.8× its 20-session average. Sector: Semicap & Foundry.

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

Last close

$308.85

23 Oct

1-day change

+0.03%

vs previous close

Market cap

$48.3B

as of 23 Oct

Turnover

1.7%

of market cap traded

Dollar volume

$823.6M

as of 23 Oct

vs prior 20 sessions

0.8×

as of 23 Oct

Share of market volume

0.21%

as of 23 Oct

Volatility

67.1%

annualised

Infinity volume insights

since 14 April 2025

Every session our rules flagged for this company since 14 April 2025: 19. 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 28 September 2026; findings before then are marked “Before we tracked it”: it traded that way, and we were not yet watching.

2026-07-29Before we tracked it
Teradyne traded 2.2× its average dollar volume on a -0.39% price move
The price moved less than 0.75% either way. $2.9B against a 20-day average of $1.4B, on a falling price (-0.39%). Turnover 5.9% of market cap, a top-1% session for the companies we track in the US. Up from 3.7% on 28 Jul.

The latest is shown; the other 18 open with the full page.

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Volume by window

	Dollar volume	vs prior 20 sessions
Last session	$824M	0.8×
Week	For members · Sign in
Month

Sessions to 23 Oct.

Infinity sector: Semicap & FoundryBased on 249 companies, 79.2% of the S&P 500's trading.

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 250 names tracked in United States, 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.

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