CSGP

CoStar Group, Inc. $30.46 1M -0.1% 3M -6.7% YTD -53.6% as of 2026-09-11

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▲ buy ▼ sell · size ≈ trade size · earnings ● beat ● miss · ring ◯ before open ◯ after close · ─ moving averages · click the buttons above to hide them

Model view — historical tendencies for the days ahead, not a forecast

Next 1 day

+0.0%

Next 1 week

-0.3%

Next 1 month

-0.3%

Seasonality

Mildly positive window

Next 30 days (to Oct 14): +1.2% median, 56% of the last 27 years finished up.

20-year seasonality chart →

Mean reversion

Neutral — RSI(2) at 73

RSI(2) under 15 is oversold (this name has historically bounced); over 85 is overbought. Its dip-buy edge in history is +0.02%/day.

Mean-reversion stats →

1-month breakdown — Market · β 0.28 -0.1% · Seasonal tilt -0.3%

$12.5B market cap (#399 US) $212M/day volume 44% volatility -65% 1-year -70% from ATH

52-week range · 7% of the way up · -66% from the high

$25.89$90.72

Congressional trades in CSGP Full tracker →

12 members · 21 buys / 27 sells · $428K–$1.6M disclosed · latest filing Sep 10, 2026.

BUY	GC Gilbert Cisneros · traded Aug 19, 2026	$1K–$15K
SELL	GC Gilbert Cisneros · traded Apr 14, 2026	$1K–$15K
BUY	GC Gilbert Cisneros · traded Mar 13, 2026	$1K–$15K
BUY	GC Gilbert Cisneros · traded Jan 28, 2026	$1K–$15K
BUY	GC Gilbert Cisneros · traded Dec 10, 2025	$1K–$15K
BUY	GC Gilbert Cisneros · traded Oct 15, 2025	$1K–$15K
SELL	LM Lisa McClain · traded Sep 25, 2025	$1K–$15K
BUY	GC Gilbert Cisneros · traded Sep 30, 2025	$1K–$15K