Why CoStar Group, Inc. (CSGP) stock moved
CoStar Group, Inc. (CSGP) shares tumbled 14.0% to $27.54 as of October 29, 2026, a sharp decline from the prior close of $32.01. BestStocks flagged the session as a major change for CSGP. The move is tied to a new SEC filing. Below, we break down what changed for CSGP, why it matters for investors, how the stock reacted, and the catalysts on the calendar.
SEC Filing
CSGP tumbled 14.0% in its latest session, moving from $32.01 to $27.54.
What it means for CoStar Group, Inc. investors
For CoStar Group, Inc. investors, the recent signals add up to a bearish shift. On the constructive side: Earnings beat — stock sold off (sell-the-news reaction); Positive price momentum. Weighing against that: Sharp 14.0% decline — elevated risk; High volume 2.7x on decline — distribution signal. Wall Street's consensus price target sits at $36.82, implying +33.7% upside from $27.54. BestStocks rates the overall signal quality high (80/100). With earnings roughly 117 days out, the next report is the most likely near-term test of the move.
CSGP price reaction
CSGP last traded at $27.54, down $4.47 (-13.96%) from the previous close of $32.01. The session traded on 2.7× average volume (very high), so the move carried above-average conviction. Over the past month the stock has ranged between $26.95 and $35.45, and it currently sits about 7% of the way up that band.
Bullish and bearish analyst opinions on CoStar Group, Inc. (CSGP)
The consensus analyst price target on CoStar Group, Inc. (CSGP) is $36.82, 33.7% above the recent $27.54. Over the past 90 days analysts logged 0 upgrades, 6 maintains, and 0 downgrades. Here is how the bullish and bearish cases on CSGP line up.
The bullish case
- Wall Street's consensus price target of $36.82 implies +33.7% upside from $27.54.
- The Street's most bullish target is $44.00 (+59.8%).
- Earnings beat — stock sold off (sell-the-news reaction).
- Positive price momentum.
The bearish case
- Sharp 14.0% decline — elevated risk.
- High volume 2.7x on decline — distribution signal.
Weighing both sides, BestStocks' composite read of recent signals is bearish, as the bull-versus-bear meter above shows. This is an educational summary of the bull and bear case, not investment advice.
Analyst price targets and ratings are FMP consensus figures as of Oct 29, 2026; other aggregators may differ. High and low targets show the range of estimates, not forecasts.
Previous notable changes for CSGP
In-depth CSGP event analyses
Frequently asked questions about CSGP
Why did CoStar Group, Inc. (CSGP) stock move?
CSGP tumbled 14.0% to $27.54. No single company-specific catalyst was confirmed during the move window, and it looks technical.
How much did CSGP stock fall?
CSGP lost 13.96% ($4.47) versus the prior close of $32.01, last trading at $27.54 on 2.7× average volume.
When is CoStar Group, Inc.'s next earnings date?
CSGP's next earnings report is estimated for 2027-02-23 — about 117 days away.
What is the analyst price target for CSGP?
The consensus analyst price target for CSGP is $36.82, about 33.7% above the current $27.54. Over the past 90 days, analysts recorded 0 upgrades, 6 maintains, and 0 downgrades.
How BestStocks tracks CSGP
This page is generated automatically by BestStocks' change-detection system after a new SEC filing was detected and verified against independent data sources. It draws on 20 tracked change events for CSGP, cross-checked against the data sources listed below. Price, volume, and market-capitalization figures are the live intraday quote as of October 29, 2026 and refresh as new information is detected; for companies with multiple share classes, market-cap figures can differ by data source. Analyst price targets and ratings are FMP consensus. This is an educational summary of what changed and why — not personalized investment advice.