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CMCSA
Comcast CorporationStock · Communication Services · Nasdaq-100 0.6% · S&P 500 0.2%
$26.20+$0.63 (+2.46%)as of market close, Aug 18, 2026
☾ After hours:$26.21+0.04%7:55 PM ET
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CMCSA weekly returns

Comcast Corporation has averaged 0.34% per week, positive in 50% of weeks. Week-by-week returns for Comcast Corporation (CMCSA) below, through August 18, 2026 — the table lists the most recent weeks; the bar chart plots the last 2 years.

Average week
+0.3%
2422 weeks
Best week
+24.7%
Aug 8, 1980
Worst week
-21.8%
Oct 23, 1987
Positive weeks
50%
of all weeks

Comcast Corporation weekly returns#

Comcast Corporation total return by week
Week endingTotal return
Aug 18, 2026
+0.1%
Aug 14, 2026
+3.2%
Aug 7, 2026
+5.8%
Jul 31, 2026
+7.4%
Jul 24, 2026
-6.3%
Jul 17, 2026
+0.9%
Jul 10, 2026
-0.9%
Jul 2, 2026
+2.7%
Jun 26, 2026
+3.3%
Jun 18, 2026
-8.4%
Jun 12, 2026
+2.9%
Jun 5, 2026
-4.2%
May 29, 2026
-1.3%
May 22, 2026
+1.8%
May 15, 2026
-2.5%

Weekly total return (since Aug 30, 2024)

-10%-5%+0%+5%+10%
20252026

Methodology#

Weekly returns are total returns (dividends reinvested), computed from CMCSA's split- and dividend-adjusted weekly (ISO week) closes. The table shows the most recent 260 weeks and the bar chart the most recent 104. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.

See also: S&P 500 · Nasdaq-100 · Dow Jones · Russell 2000 · US Bond Market · Gold · Silver · Bitcoin · Ethereum

FAQ#

What is Comcast Corporation's average weekly return?
Comcast Corporation (CMCSA) has averaged about 0.34% per week, positive in roughly 50% of weeks. The best week was Aug 8, 1980 (+24.7%) and the worst was Oct 23, 1987 (-21.8%).