CoStar Group slides as CFO transition and analyst downgrade pressure shares

CoStar Group (CSGP) is down 4.1% today. Here is some analysis on what might have caused this price movement. ([costargroup.com](https://www.costargroup.com/press-room/2026/costar-group-promotes-robin-rossmann-chief-financial-officer-drive-margin-expansion))

Analysis: The most likely driver is a mix of management turnover and a fresh analyst downgrade. Investors appear to be reacting to CoStar’s announcement that its CFO will step down at the end of July, alongside a same-day rating cut that pointed to weaker near-term conviction and no new guidance reaffirmation in that announcement. ([costargroup.com](https://www.costargroup.com/press-room/2026/costar-group-promotes-robin-rossmann-chief-financial-officer-drive-margin-expansion))

Details:

On July 13, CoStar said Robin Rossmann will become chief financial officer effective July 31, replacing Christian Lown, who is leaving to pursue an opportunity outside the industry; the company said the departure was not tied to any disagreement. ([costargroup.com](https://www.costargroup.com/press-room/2026/costar-group-promotes-robin-rossmann-chief-financial-officer-drive-margin-expansion))

CoStar’s first-quarter release had reaffirmed full-year 2026 revenue guidance of $3.78 billion to $3.82 billion and raised adjusted EBITDA guidance to $780 million to $820 million, so the later leadership change may have revived questions about execution. ([costargroup.com](https://www.costargroup.com/press-room/2026/costar-group-q1-2026-revenue-grows-23-year-over-year-897-million-increases-732))

An analyst downgrade on July 14 cut the stock to Neutral from Outperform and reduced the price target to $34 from $48, citing the CFO change, no fresh guidance reiteration, and softer recent bookings. ([investing.com](https://www.investing.com/news/analyst-ratings/baird-downgrades-costar-group-stock-rating-on-cfo-departure-93CH-4789851?utm_source=openai))

CoStar is also due to report second-quarter results on July 28, which may be adding caution as investors wait for updated commentary from management. ([investors.costargroup.com](https://investors.costargroup.com/news))

Sources:

CoStar Group, SEC, Investing.com

Disclaimer: This price movement analysis was generated with the help of AI. Please double-check the information provided for mistakes.

$CSGP Insider Trading Activity

$CSGP insiders have traded $CSGP stock on the open market 6 times in the past 6 months. Of those trades, 6 have been purchases and 0 have been sales.

Here’s a breakdown of recent trading of $CSGP stock by insiders over the last 6 months:

ANDREW C FLORANCE (President and CEO) has made 3 purchases buying 127,150 shares for an estimated $4,994,862 and 0 sales.
FREDERICK G. SAINT (President, Marketplaces) purchased 20,000 shares for an estimated $906,600
LOUISE S SAMS purchased 1,000 shares for an estimated $48,360
RACHEL C GLASER purchased 1,000 shares for an estimated $44,940

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

EARLY ACCESS

Receive CSGP Data Alerts

Real-time alerts on filings, insider trades, and market signals — before everyone else.

Get Alerts →

$CSGP Hedge Fund Activity

We have seen 375 institutional investors add shares of $CSGP stock to their portfolio, and 402 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

POLEN CAPITAL MANAGEMENT LLC added 7,679,432 shares (+157.0%) to their portfolio in Q1 2026, for an estimated $309,788,286
GOLDMAN SACHS GROUP INC added 5,494,500 shares (+146.5%) to their portfolio in Q1 2026, for an estimated $221,648,130
CAPITAL INTERNATIONAL INVESTORS added 4,671,743 shares (+43.1%) to their portfolio in Q1 2026, for an estimated $188,458,112
VULCAN VALUE PARTNERS, LLC removed 4,485,021 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $180,925,747
MIZUHO MARKETS AMERICAS LLC removed 4,140,240 shares (-93.8%) from their portfolio in Q1 2026, for an estimated $167,017,281
VAN ECK ASSOCIATES CORP added 3,422,202 shares (+6054.4%) to their portfolio in Q1 2026, for an estimated $138,051,628
MERITAGE GROUP LP added 3,329,006 shares (+inf%) to their portfolio in Q1 2026, for an estimated $134,292,102

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

$CSGP Congressional Stock Trading

Members of Congress have traded $CSGP stock 3 times in the past 6 months. Of those trades, 2 have been purchases and 1 have been sales.

Here’s a breakdown of recent trading of $CSGP stock by members of Congress over the last 6 months:

REPRESENTATIVE GILBERT RAY CISNEROS, JR. has traded it 3 times. They made 2 purchases worth up to $30,000 on 03/13, 01/28 and 1 sale worth up to $15,000 on 04/14.

To track congressional stock trading, check out Quiver Quantitative's congressional trading dashboard. You can access data on congressional stock trades through the Quiver Quantitative API Congress trades endpoint.

$CSGP Price Targets

Multiple analysts have issued price targets for $CSGP recently. We have seen 14 analysts offer price targets for $CSGP in the last 6 months, with a median target of $50.0.

Here are some recent targets:

George Tong from Goldman Sachs set a target price of $46.0 on 06/25/2026
Jason Haas from Wells Fargo set a target price of $26.0 on 06/24/2026
Michael Rindos from Benchmark set a target price of $45.0 on 06/04/2026
Heather Balsky from B of A Securities set a target price of $37.0 on 05/19/2026
Brett Huff from Stephens & Co. set a target price of $42.0 on 05/04/2026
Jake Fuller from BTIG set a target price of $55.0 on 04/29/2026
Mayank Tandon from Needham set a target price of $50.0 on 04/29/2026

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.