Comcast

CMCSA · United States

Comcast traded $710.5M on 23 Oct 2026, 1.0× its 20-session average. Sector: Telecom & Connectivity.

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

Last close
$22.69
23 Oct
1-day change
-0.66%
vs previous close
Company value, all classes
$80.5B
Turnover
0.88%
of company value traded
Dollar volume
$710.5M
as of 23 Oct
vs prior 20 sessions
1.0×
as of 23 Oct
Share of market volume
0.18%
as of 23 Oct
Volatility
30.4%
annualised

Share classes

CMCSA is one class of a company with several. The company is valued once: every counted class at its own price, or a class that converts at the price of the class it converts into. Counts from the company's 10-Q, as of 2026-07-15.

  • Class A common stock3.54bn · this line, at its own close
  • Class B common stock9.4M · counted at the close of the class it converts into, one for one
    “Our Class B common stock is convertible, share for share, into Class A common stock, subject to certain restrictions.” — Note 12: Equity > Common Stock

Infinity volume insights

since 14 April 2025

Every session our rules flagged for this company since 14 April 2025: 11. 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.

  1. 2026-09-18Before we tracked it

    Comcast traded 2.4× its average dollar volume on a -0.74% price move

    The price moved less than 0.75% either way. $1.5B against a 20-day average of $607.7M, on a falling price (-0.74%). Dollar volume 2.4× normal; turnover 1.8% of market cap (2.7× its usual turnover).

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Prices and volume via the daily pipeline, converted to USD.

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