Hillscore

Congress trades in CoStar Group, Inc. (CSGP)

5 of the members we track disclosed 16 purchases of CSGP between 2023-04-10 and 2026-08-19, and 12 sales. Here is what the stock did afterwards.

Average after 3 months
−11.52%
Against XLRE
−12.00%
Beat the sector
33%
Buys measured
15

Every purchase is measured over the three months after the transaction date, against XLRE — the ETF standing in for Real Estate — over exactly the same dates. The second figure is the one that carries information: the first mostly reflects what the sector did. How CSGP was classified.

How these buys are tagged

2 of these purchases were made by a member whose own committee oversees Real Estate. 2 are marked Cluster: A buy is marked Cluster when at least one other tracked member of Congress bought the same stock within 30 days of it, regardless of committee membership.

Buys Number Return after 3 months vs. sector Beat their sector
All buys 15 -11.5% -12.0% 33%
Notable (committee-flagged) 2 Too few buys to measure
Unaligned (no committee overlap) 13 -11.3% -12.2% 38%
Cluster, excl. mega-caps 2 Too few buys to measure
Not clustered, excl. mega-caps 13 -9.6% -10.3% 38%

Who bought the most

Every disclosed purchase

Member Bought
disclosed
Signal Price 1W 1M 3M vs sector
Gilbert Ray Cisneros, Jr. 2026-08-19
2026-09-10
Unaligned $33.73 -4.7% -13.8% — —
Gilbert Ray Cisneros, Jr. 2026-03-13
2026-04-07
Unaligned $43.63 -1.7% -16.4% -24.7% -32.1%
Gilbert Ray Cisneros, Jr. 2026-01-28
2026-02-13
Unaligned $65.20 -19.7% -31.5% -47.6% -54.5%
Gilbert Ray Cisneros, Jr. 2025-12-10
2026-01-12
Unaligned $67.87 -4.5% -13.8% -33.2% -37.7%
Gilbert Ray Cisneros, Jr. 2025-10-15
2025-11-18
Unaligned $75.19 +2.7% -9.5% -15.1% -13.8%
Gilbert Ray Cisneros, Jr. 2025-09-30
2025-10-10
Unaligned $84.37 -4.5% -17.5% -19.6% -16.2%
Gilbert Ray Cisneros, Jr. 2025-09-22
2025-10-10
Unaligned $86.31 -2.4% -10.6% -22.8% -19.3%
Lisa C. McClain 2025-08-13
2025-09-12
Notable Cluster $87.56 +0.8% -0.9% -21.2% -21.2%
Gilbert Ray Cisneros, Jr. 2025-07-31
2025-08-14
Unaligned Cluster $95.19 +0.2% -6.0% -26.8% -25.6%
Gilbert Ray Cisneros, Jr. 2025-07-09
2025-08-14
Unaligned $84.50 +0.8% +11.8% -6.5% -6.3%
Gilbert Ray Cisneros, Jr. 2025-06-30
2025-07-10
Unaligned $80.40 +1.5% +19.7% +4.8% +3.5%
Gilbert Ray Cisneros, Jr. 2025-06-27
2025-07-10
Unaligned $80.76 +1.7% +15.1% +4.0% +2.2%
Gilbert Ray Cisneros, Jr. 2025-06-25
2025-07-10
Unaligned $81.26 +0.2% +14.4% +3.4% +2.6%
Jefferson Shreve 2025-02-24
2025-03-09
Notable $77.49 -2.7% +3.7% -4.5% -0.3%
William Keating 2025-01-21
2025-02-25
Unaligned $74.16 +2.6% +5.6% +9.0% +12.4%
Dan Goldman 2023-04-10
2023-05-19
Unaligned $68.82 +1.3% +9.6% +28.0% +26.4%

Prices are the closing price on the transaction date, not what was paid: filings never disclose an execution price. Blank figures mean the window has not elapsed yet. Sales are not scored — a sale closes a position rather than opening one — so the 12 disclosed sales of CSGP are not in this table.

Download the data behind this page, or read how every figure is calculated. Trades in CSGP are a small part of the full rankings, which score each member across everything they bought.

Data last updated .