Wallsti
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CSGP

CoStar Group, Inc. · Real Estate · Real Estate Services
TECHSellZACKSBuy R500#439 today
$27.38 -1.23% today · -2.53% 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%#468 H -0.3%#493 H -1.6%#501 H -2.1%#442 M
Big drop Sep 28 (-3.1% or worse) 66 0.0%#324 H -0.3%#402 H -2.2%#432 H -3.9%#368 M
Big gain (+2.5% or better) 67 +0.1%#239 H -0.7%#444 H -2.4%#496 H -4.6%#433 M
Earnings beat 19 +1.5%#94 M +1.4%#32 M -0.8%#428 M -1.1%#352 M
Earnings miss — — — — —
52-week high 5 +1.0%#193 L +0.6%#219 L -2.6%#285 L -8.4%#369 L
52-week low Sep 28 10 +0.2%#76 M -1.2%#191 M -0.9%#231 M -22.3%#206 L
Crossed above 200-day avg 12 +0.3%#122 M -0.6%#380 M +1.4%#253 M +6.4%#31 M
Crossed below 200-day avg 12 +0.3%#85 M +1.1%#138 M -0.5%#333 M +7.6%#77 M
RSI oversold 19 -0.3%#409 M +0.5%#298 M -5.4%#489 M -12.3%#461 M
RSI overbought 11 +0.6%#93 M 0.0%#265 M +1.7%#206 M 0.0%#311 L
Reddit spike — — — — —
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 CSGP'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 11 +0.63% (-0.3 to +1.4) Medium #93 of 501 64% -0.03%
1 week 11 -0.01% (-1.3 to +0.6) Medium #265 of 501 45% -0.35%
1 month 11 +1.71% (-3.7 to +4.0) Medium #206 of 501 55% -0.56%
1 quarter 11 ≈7 indep. +0.03% (-8.2 to +3.7) Low #311 of 501 55% -6.56%

Range of outcomes: all of CSGP'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 11 +0.6%M vs 0.0% 0.0%M vs -0.3% +1.7%M vs -1.0% 0.0%L vs -1.1%
Below its 200-day avg now — — — — —
Medium trendAbove its 50-day avg 11 +0.6%M vs 0.0% 0.0%M vs -0.4% +1.7%M vs -1.9% 0.0%L vs -0.4%
Below its 50-day avg now — — — — —
Short trendAbove its 20-day avg 11 +0.6%M vs -0.1% 0.0%M vs -0.5% +1.7%M vs -1.5% 0.0%L vs +0.1%
Below its 20-day avg now — — — — —

The same event split by where CSGP 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
Jul 10, 2025 Jul 10 @ $86.05 RSI 71.8, +1.8% on the day -0.7% -1.3% +9.8% -8.2%
Mar 15, 2024 Mar 15 @ $95.18 RSI 74.0, +8.3% on the day +1.0% +0.6% -9.3% -22.3%
Dec 14, 2023 Dec 14 @ $88.25 RSI 70.4, +2.5% on the day -0.8% -1.3% -7.4% +9.0%
Nov 24, 2023 Nov 24 @ $84.78 RSI 70.3, +1.1% on the day -0.6% +0.6% +3.2% +0.1%
Jul 18, 2023 Jul 18 @ $91.23 RSI 70.1, +0.7% on the day +0.4% +0.6% -13.0% -10.5%
Jun 16, 2023 Jun 16 @ $84.14 RSI 70.2, +0.1% on the day +1.4% +4.4% +8.9% -5.3%
May 19, 2023 May 19 @ $78.50 RSI 70.8, +0.6% on the day +1.7% 0.0% +11.6% 0.0%
Apr 27, 2023 Apr 27 @ $77.17 RSI 73.5, +7.3% on the day -0.3% -3.7% +1.7% +5.8%
Oct 27, 2022 Oct 27 @ $81.62 RSI 70.2, +2.0% on the day +1.5% -2.1% -3.5% -4.6%
Sep 7, 2022 Sep 7 @ $78.07 RSI 72.1, +2.5% on the day +0.6% -5.3% -3.7% +3.7%
Jul 27, 2022 Jul 27 @ $69.68 RSI 71.2, +14.8% on the day +1.8% +4.1% +4.0% +6.9%

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.