CoStar Group, Inc. (CSGP) shares climbed 8.0% to $29.81 as of October 8, 2026, a significant gain from the prior close of $27.60. BestStocks flagged the session as a major change for CSGP. The move is tied to price move up. Below, we break down what changed for CSGP, why it matters for investors, how the stock reacted, and the catalysts on the calendar.
What happened
CSGP climbed 8.0% to $29.81
CoStar Group, Inc. (CSGP) moved +8.66% on 2026-10-08 after Needham & Company reiterated a 'buy' rating with a $40.00 price target. Volume was 2.1x the 5-day average. CSGP earnings are scheduled for 2026-10-27 with consensus EPS estimate of $0.34.
This summary describes the catalyst and move as first detected on Oct 8, 2026, 4:39 PM EDT; the stock has continued trading since, so the current price and percentage move (shown above) may be larger or smaller than the figures here.
Material / EarningsMedium confidence
Rel. volume
1.3×
Normal
Vs peers
—
No comparable peers
Market cap
$12.1B
NASDAQ Global Select
Analyst target
$36
+22.0% vs price
Price chart
Sep 8 – Oct 8
E earnings
F filing
A analyst
V/N other
click a marker to highlight
Change events — click to jump to details
What it means for CoStar Group, Inc. investors
For CoStar Group, Inc. investors, the balance of recent signals points to a bullish shift. On the constructive side: Material positive event; Strong 8.0% price move. Weighing against that: New SEC filing — review for material disclosures; New SEC filing — review for material disclosures. Wall Street's consensus price target sits at $36.36, implying +22.0% upside from $29.81. Over the past 90 days analysts logged 0 upgrades and 4 downgrades. BestStocks rates the overall signal quality medium (61/100). With earnings roughly 19 days out, the next report is the most likely near-term test of the move.
CSGP price reaction
CSGP last traded at $29.81, up $2.21 (+8.01%) from the previous close of $27.60. The session traded on 1.3× average volume (normal), so participation was unremarkable. Over the past month the stock has ranged between $26.95 and $31.56, and it currently sits about 62% of the way up that band.
Bullish and bearish analyst opinions on CoStar Group, Inc. (CSGP)
▲Latest catalyst·strengthens the bull case
The latest catalyst — a materially positive development — it strengthens the bull case.
The consensus analyst price target on CoStar Group, Inc. (CSGP) is $36.36, 22.0% above the recent $29.81. Over the past 90 days analysts logged 0 upgrades, 9 maintains, and 4 downgrades. Here is how the bullish and bearish cases on CSGP line up.
▲ The bullish case
+Wall Street's consensus price target of $36.36 implies +22.0% upside from $29.81.
+The Street's most bullish target is $44.00 (+47.6%).
+Material positive event.
+Strong 8.0% price move.
+CoStar Group, Inc. (CSGP) moved +6.60% from $28.49 to $30.37 on 2026-07-16.
▼ The bearish case
−The most bearish analyst target is $26.00 (-12.8%).
−4 analyst downgrades in the past 90 days, most recently Keefe, Bruyette & Woods to Market Perform (2026-07-29).
Bull vs bear balanceBullish Shift
BearishNeutralBullish
The latest catalyst moved the balance toward the bulls — the hollow tick marks where it sat before.
Weighing both sides, BestStocks' composite read of recent signals is bullish, 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 8, 2026; other aggregators may differ. High and low targets show the range of estimates, not forecasts.
CoStar Group, Inc. moved -2.95% intraday from $28.09 to $27.26. CoStar Group (CSGP ) stock is down roughly 3% on September 28, 2026, extending a broader downward technical trend and ongoing negative market sentiment. ### Key Factors Weighing on the Stock - Technical Selling Pressure: Technical indicators show weak momentum and persistent seller dominance, compounded by a recent bearish cross where short-term moving averages dropped below long-term trends. - Recent Index Removal: Investor liquidity and profile adjustments followed CoStar Group's removal from the FTSE All-World Index earlier in the month. - Broader 2026 Headwinds: The stock remains heavily pressured year-to-date due to lingering concerns over elevated spending and investments in Homes.com, lower net bookings, and heightened competition in the residential portal space. If you'd like, I can provide details on: - Current analyst consensus price targets - Recent insider trading activity - Upcoming earnings dates
CoStar Group fell 2.88% to $29.48 amid broader macroeconomic headwinds—surging Treasury yields, rising oil prices, and geopolitical tensions from U.S.-Iran friction—creating a risk-off environment for commercial real estate and related data services (web_catalyst). Investor caution also persists around Homes.com's heavy marketing spend and profit sacrifices tied to aggressive growth timelines. Trading volume was below average at 0.36x expected pace 210 minutes into the session.
CoStar Group shares declined 2.31% to $29.64, driven by macro-level sector headwinds affecting commercial real estate services—including surging oil prices and rising Treasury yields from U.S.-Iran geopolitical tensions—compounded by lingering investor anxiety over the company's reduced full-year growth outlook (web_catalyst, Yahoo Finance). Volume traded 1,170,065 shares (0.58x average for this point in the session), below typical intraday levels.
Filings2026-08-21+0.0%
CoStar Group, Inc. (CSGP) filed an 8-K on 2026-08-21. The filing's content was not disclosed in available sources.
Material / Earnings2026-08-19+7.5%
CoStar Group, Inc. (CSGP) moved +8.77% from $31.01 to $33.73 on 2026-08-19, driven by CEO Andrew Florance's recent open-market purchase of 83,300 shares at ~$29.89 and reiterations of bullish analyst price targets, including Citizens maintaining a $35 target. The move reflects positive sentiment around insider confidence and steady multi-family apartment demand in CoStar's operational segments.
In-depth CSGP event analyses
Permanent, dated analyses of CSGP's most significant sessions.
CSGP climbed 8.0% to $29.81. The move is associated with price move up.
How much did CSGP stock rise?
CSGP gained 8.01% ($2.21) versus the prior close of $27.60, last trading at $29.81 on 1.3× average volume.
When is CoStar Group, Inc.'s next earnings date?
CSGP's next earnings report is estimated for 2026-10-27 — about 19 days away.
What is the analyst price target for CSGP?
The consensus analyst price target for CSGP is $36.36, about 22.0% above the current $29.81. Over the past 90 days, analysts recorded 0 upgrades, 9 maintains, and 4 downgrades.
How BestStocks tracks CSGP
This page is generated automatically by BestStocks' change-detection system after price move up 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 8, 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.
