CapitolRadar tracks every publicly disclosed CSGP trade by US congress members and corporate insiders: 33 disclosed trades (16 buys, 17 sells) by 4 tracked traders, from 2019-03-13 to 2026-09-25. Updated daily from official filings.
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CoStar Group, Inc. (CSGP) — Real Estate · Real Estate - Services, market cap about $12.0B.
CapitolRadar analysis
33 disclosed trades split almost evenly
33 trades in CoStar Group (CSGP) were tracked from March 13, 2019 through September 25, 2026: 16 buys and 17 sells by four distinct traders. That near-even split provides no strong directional imbalance across the full period. The sample is small—especially after dividing it among traders and quarters—so individual transactions can materially affect the apparent pattern.
3 buys define the latest reported quarter
3 trades, all buys, appear in 2026 Q3. By comparison, 2026 Q1, 2024 Q3, 2024 Q1, 2023 Q2 and 2022 Q3 each contain only one tracked trade. The busiest listed quarter is 2023 Q4, with four trades split between two buys and two sells. Both 2023 Q1 trades were sells. These quarter-level counts are very small and the provided quarterly sequence is not continuous, limiting comparisons over time.
15 of 16 buys came from one buyer
Ro Khanna accounted for 15 buys, with the latest dated September 25, 2026. Gilbert Cisneros accounted for the remaining buy, dated August 19, 2026. Accordingly, the buy activity is highly concentrated in one disclosed buyer rather than broadly distributed across the four tracked traders. Both named buyers also bought PWR, AMD, WMT, WDAY, ACN and PLTR, but the provided data does not specify timing, size or motivation for those transactions.
Disclosures can arrive up to 45 days after a trade, so reported dates and real-time positioning may differ. Transaction amounts are disclosed in ranges, making any value estimates approximate; no amount ranges were provided here. The limited number of traders and trades also warrants caution when interpreting concentration or quarterly shifts.
Analysis written from the tracked record on 2026-10-13; it is refreshed whenever the underlying numbers change.
Activity by quarter
| Quarter | Disclosed trades | Buys | Sells |
|---|---|---|---|
| 2026 Q3 | 3 | 3 | 0 |
| 2026 Q1 | 1 | 0 | 1 |
| 2024 Q3 | 1 | 0 | 1 |
| 2024 Q1 | 1 | 1 | 0 |
| 2023 Q4 | 4 | 2 | 2 |
| 2023 Q2 | 1 | 1 | 0 |
| 2023 Q1 | 2 | 0 | 2 |
| 2022 Q3 | 1 | 1 | 0 |
Who is buying CSGP?
| Trader | Disclosed buys | Last buy | Grade |
|---|---|---|---|
| Ro Khanna | 15 | 2026-09-25 | — |
| Gilbert Cisneros | 1 | 2026-08-19 | — |
Disclosed trades in CSGP
| Date | Who | Type | Amount | 30d vs SPY |
|---|---|---|---|---|
| 2026-09-25 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-09-11 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-08-19 | Gilbert Cisneros | buy | $1,001 - $15,000 | — |
| 2026-01-13 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2024-09-09 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2024-02-13 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-11-03 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-10-31 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2023-10-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-10-02 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2023-05-23 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-03-24 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2023-03-14 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-09-29 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2022-06-17 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-05-23 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-05-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2022-05-05 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2022-04-21 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2022-04-13 | Ro Khanna | buy | $1,001 - $15,000 | — |
CapitolRadar signal history
NEW PICK 2026-10-11
Rep. Ro Khanna disclosed buying $1,001 to $15,000 of CoStar Group (CSGP) stock. The trade fell short because Khanna has no verified record of outperforming the S&P 500, so the signal remains unproven; a documented history of strong results would have supported a different verdict. The biggest caveat is that the trade-date price is unavailable, making the stock’s performance since the purchase unclear.
These buyers also bought
Other stocks the tracked buyers of CSGP disclosed buying in the last six months: APP (2) · NXPI (2) · WMT (2) · PLTR (2) · WDAY (2) · VZ (2).
About CoStar Group, Inc.
CoStar Group, Inc. (CSGP) stands as a premier global provider of comprehensive information, sophisticated analytics, and dynamic online marketplace services. The company caters to professionals within the commercial real estate, hospitality, residential, and related industries, extending its reach across the United States, Canada, Europe, the Asia Pacific region, and Latin America. Its diverse suite of offerings encompasses powerful data platforms like CoStar Property, which meticulously catalogues an extensive inventory of various property types, including office, industrial, retail, multifam…
Frequently asked questions
Which politicians bought CSGP most?
Ro Khanna leads with 15 disclosed buys, followed by Gilbert Cisneros.
How current is this page?
It re-renders from the tracked record on every view and new filings are ingested daily — but STOCK Act disclosures can lag the trade by up to 45 days, so the most recent weeks are always incomplete.
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CapitolRadar tracks publicly disclosed trades (STOCK Act filings and SEC Form 4). Disclosures can lag the trade by up to 45 days. Backtests measure past disclosed buys against the S&P 500 and do not predict future results. Everything on this page is impersonal information for your own research — not investment advice.