Wallsti
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CMCSA

Comcast Corporation · Communication Services · Telecom Services
TECHSellZACKSSell R500#381 today
$21.57 -0.60% today · -1.55% 1W
Oct 2 close or latest
PreviewWhy it's moving

Underperforming without a clear catalyst yet

Assembled from Wallsti's own signals.

After each kind of event

EventEvents1 day1 week1 month1 quarter
Any day 1,255 0.0%#443 H -0.1%#472 H -0.9%#483 H -3.2%#480 M
Big drop (-2.1% or worse) 66 +0.2%#182 H +0.3%#324 H 0.0%#365 H -1.1%#452 M
Big gain (+1.8% or better) 65 +0.1%#232 H +0.4%#219 H -0.5%#471 H -0.3%#460 M
Earnings beat 20 +0.6%#152 H +1.4%#34 H +1.0%#282 H -3.7%#450 M
Earnings miss — — — — —
52-week high 3 +0.5%#59 L -0.6%#301 L -1.8%#288 L -10.6%–
52-week low 10 +0.6%#54 M +1.2%#76 M +3.8%#36 M +6.8%#108 L
Crossed above 200-day avg 11 -0.6%#473 M -0.7%#395 M +1.6%#229 M -5.4%#457 L
Crossed below 200-day avg 10 +0.6%#126 M -0.2%#375 M +1.6%#219 M -5.9%#416 L
RSI oversold 17 +1.2%#9 M +0.3%#358 M +2.8%#178 M -0.4%#438 M
RSI overbought 10 -0.3%#389 M -0.4%#286 M -1.9%#436 M -6.7%#371 M
Mention spike (Trendy) — — — — —
Analyst upgrade — — — — —
Analyst downgrade — — — — —
Insider buy — — — — —
Insider unplanned sale — — — — —

Median gain from the close of the session the event was known, over each holding period; #rank among the S&P 500 stocks after the same kind of event (#1 = best). "Big" is CMCSA's own: its worst / best 10% of days over the prior 2 years. Highlighted: happening in the latest session.

RSI overbought

The 14-day RSI rises above 70.

HoldingEventsMedian (likely range)ConfidenceRankUpvs SPYRange of outcomes (worst · 25–75% · median · best)vs S&P 500 stocks (their medians)
1 day 10 -0.26% (-0.9 to +0.3) Medium #389 of 501 40% -0.51%
1 week 10 -0.36% (-2.5 to +1.2) Medium #286 of 501 40% -2.21%
1 month 10 ≈9 indep. -1.87% (-5.3 to -0.9) Medium #436 of 501 30% -4.33%
1 quarter 10 ≈9 indep. -6.67% (-16.0 to +2.0) Medium #371 of 501 40% -6.95%

Range of outcomes: all of CMCSA's overbought readings in the past 5 years, from the worst to the best result over each holding period; the box holds the middle half, the tick is the median. A wide box means the median alone says little. Hover the median for the average.

RSI overbought by trend

When it happenedEvents1 day1 week1 month1 quarter
Long trendAbove its 200-day avg 8 -0.3%M vs 0.0% -0.4%M vs -0.2% -3.1%L vs -0.9% -11.1%L vs -2.3%
Below its 200-day avg now 2 -0.4%– vs 0.0% -2.0%– vs 0.0% -1.9%– vs +0.4% +5.2%– vs +0.6%
Medium trendAbove its 50-day avg 10 -0.3%M vs 0.0% -0.4%M vs +0.2% -1.9%M vs -0.8% -6.7%M vs -2.8%
Below its 50-day avg now — — — — —
Short trendAbove its 20-day avg 10 -0.3%M vs 0.0% -0.4%M vs -0.1% -1.9%M vs -0.8% -6.7%M vs -4.4%
Below its 20-day avg now — — — — —

The same event split by where CMCSA stood against its 200-, 50- and 20-day averages when it happened (a dip in an uptrend vs a falling knife); "vs" is the plain any-day median in that trend; "now" marks where it stands today. Splitting halves the evidence, so watch the confidence letters: H / M / L.

Latest overbought readings

EventEntry1 day1 week1 month1 quarter
Apr 23, 2026 Apr 23 @ $31.21 RSI 70.8, +7.7% on the day -12.9% -14.5% -20.3% -28.6%
Feb 5, 2026 Feb 5 @ $30.09 RSI 70.5, +1.1% on the day +1.7% +3.1% +0.6% -14.0%
Oct 31, 2024 Oct 31 @ $38.01 RSI 70.3, +3.4% on the day -0.3% +1.2% -0.9% -22.5%
Jul 17, 2024 Jul 17 @ $35.07 RSI 70.3, +2.5% on the day -1.1% -6.2% -2.6% +4.5%
Jan 26, 2024 Jan 26 @ $39.35 RSI 71.8, +2.2% on the day -0.3% -2.5% -8.6% -16.0%
Jul 27, 2023 Jul 27 @ $38.08 RSI 76.2, +5.7% on the day -0.3% -0.4% +0.3% -5.1%
Apr 28, 2023 Apr 28 @ $34.49 RSI 72.8, +2.7% on the day +0.7% -2.3% -5.3% +10.2%
Jan 25, 2023 Jan 25 @ $33.18 RSI 70.8, +0.9% on the day +0.8% -0.3% -7.7% -8.2%
Jan 6, 2023 Jan 6 @ $31.35 RSI 71.0, +2.5% on the day -0.9% +2.7% +4.7% +1.7%
Nov 23, 2022 Nov 23 @ $29.17 RSI 71.4, +1.2% on the day +0.3% +2.1% -1.1% +5.9%

Aftermath: entry is the close of the first session the event was fully known (the same session for price moves, the reaction session for earnings, the next session for Reddit, analyst and insider events, which are dated by day). Repeats within a few sessions count as one event. Past performance after an event says nothing certain about the next one. Not advice.