# Costar Group, Inc.: overview

CSGP · Nasdaq · CIK 1057352 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/csgp.md) · [Financials](/companies/csgp/financials.md) · [Filings](/companies/csgp/filings.md) · [Insiders](/companies/csgp/insiders.md)

Latest reported revenue: [$952.0m](/filings/0001057352-26-000083.md) for Q3 FY2026, three months to 2026-09-30, from the 10-Q filed Oct 28, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001057352-26-000083).

## Last eight quarters

| Line item | Unit | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) | Q3 FY2026 (2026-09-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [709 d](/filings/0001057352-26-000020.md) | [732](/filings/0001057352-26-000035.md) | [781](/filings/0001057352-26-000066.md) | [834](/filings/0001057352-26-000083.md) | [900 d](/filings/0001057352-26-000020.md) | [897](/filings/0001057352-26-000035.md) | [925](/filings/0001057352-26-000066.md) | [952](/filings/0001057352-26-000083.md) |
| Gross margin | % | [80.2% d](/filings/0001057352-26-000020.md) | [79.1%](/filings/0001057352-26-000035.md) | [78.5%](/filings/0001057352-26-000066.md) | [79.4%](/filings/0001057352-26-000083.md) | [78.6% d](/filings/0001057352-26-000020.md) | [78.1%](/filings/0001057352-26-000035.md) | [78.7%](/filings/0001057352-26-000066.md) | [77.8%](/filings/0001057352-26-000083.md) |
| Operating margin | % | [5.7% d](/filings/0001057352-26-000020.md) | [(5.9%)](/filings/0001057352-26-000035.md) | [(3.5%)](/filings/0001057352-26-000066.md) | [(6.1%)](/filings/0001057352-26-000083.md) | [5.4% d](/filings/0001057352-26-000020.md) | [0.3%](/filings/0001057352-26-000035.md) | [8.2%](/filings/0001057352-26-000066.md) | [8.8%](/filings/0001057352-26-000083.md) |
| Net margin | % | [8.5% d](/filings/0001057352-26-000020.md) | [(2.0%)](/filings/0001057352-26-000035.md) | [0.8%](/filings/0001057352-26-000066.md) | [(3.7%)](/filings/0001057352-26-000083.md) | [5.2% d](/filings/0001057352-26-000020.md) | [0.3%](/filings/0001057352-26-000083.md) | [5.9%](/filings/0001057352-26-000083.md) | [7.8%](/filings/0001057352-26-000083.md) |
| Diluted EPS | $ per share | not reported | [(0.04)](/filings/0001057352-26-000035.md) | [0.01](/filings/0001057352-26-000066.md) | [(0.07)](/filings/0001057352-26-000083.md) | not reported | [0.01](/filings/0001057352-26-000035.md) | [0.14](/filings/0001057352-26-000066.md) | [0.18](/filings/0001057352-26-000083.md) |
| Free cash flow | $m | [25.6 d](/filings/0001057352-26-000020.md) | [(1.0)](/filings/0001057352-26-000035.md) | [28.0 d](/filings/0001057352-26-000066.md) | [(5.0) d](/filings/0001057352-26-000083.md) | [101 d](/filings/0001057352-26-000020.md) | [107](/filings/0001057352-26-000035.md) | [77.0 d](/filings/0001057352-26-000066.md) | [137 d](/filings/0001057352-26-000083.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 12-month figure less the 9-month figure; 6-month figure less the 3-month figure; 9-month figure less the 6-month figure.

## Last five fiscal years

| Line item | Unit | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) |
| --- | --- | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [1,944](/filings/0001057352-24-000013.md) | [2,182](/filings/0001057352-25-000016.md) | [2,455](/filings/0001057352-26-000020.md) | [2,736](/filings/0001057352-26-000020.md) | [3,247](/filings/0001057352-26-000020.md) |
| Gross margin | % | [81.6%](/filings/0001057352-24-000013.md) | [81.0%](/filings/0001057352-25-000016.md) | [80.0%](/filings/0001057352-26-000020.md) | [79.6%](/filings/0001057352-26-000020.md) | [78.9%](/filings/0001057352-26-000020.md) |
| Operating margin | % | [22.2%](/filings/0001057352-24-000013.md) | [20.7%](/filings/0001057352-25-000016.md) | [11.5%](/filings/0001057352-26-000020.md) | [0.2%](/filings/0001057352-26-000020.md) | [(2.2%)](/filings/0001057352-26-000020.md) |
| Net margin | % | [15.1%](/filings/0001057352-24-000013.md) | [16.9%](/filings/0001057352-25-000016.md) | [15.3%](/filings/0001057352-26-000020.md) | [5.1%](/filings/0001057352-26-000020.md) | [0.2%](/filings/0001057352-26-000020.md) |
| Diluted EPS | $ per share | [0.74](/filings/0001057352-24-000013.md) | [0.93](/filings/0001057352-25-000016.md) | [0.92](/filings/0001057352-26-000020.md) | [0.34](/filings/0001057352-26-000020.md) | [0.02](/filings/0001057352-26-000020.md) |
| Free cash flow | $m | [346](/filings/0001057352-24-000013.md) | [444](/filings/0001057352-25-000016.md) | [372](/filings/0001057352-26-000020.md) | [(186)](/filings/0001057352-26-000020.md) | [123](/filings/0001057352-26-000020.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment.

Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing.

## Insider purchases and sales

The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/csgp/insiders.md)

None in coverage.

## Funds that report holding it

From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md)

| Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | --- | --- |
| [VANGUARD PORTFOLIO MANAGEMENT LLC](/funds/2100121.md) | 2026-06-30 | $1.07bn | 37,914,844 |  | Reduced −319,289 |
| [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $957.6m | 33,813,969 |  | Added +5,785 |
| [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $755.7m | 26,683,792 |  | Reduced −740,111 |
| [BAMCO INC /NY/](/funds/1017918.md) | 2026-06-30 | $612.5m | 21,626,763 |  | Added +5,312,588 |
| [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $521.4m | 18,410,876 |  | Reduced −240,099 |
| [Capital International Investors](/funds/1562230.md) | 2026-06-30 | $471.3m | 16,643,016 |  | Added +1,129,263 |
| [BAILLIE GIFFORD & CO](/funds/1088875.md) | 2026-06-30 | $372.5m | 13,154,165 |  | Reduced −456,757 |
| [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $343.3m | 12,166,469 |  | Reduced −282,183 |
| [AKRE CAPITAL MANAGEMENT LLC](/funds/1112520.md) | 2026-06-30 | $331.3m | 11,699,396 |  | Added +1,351,123 |
| [JANUS HENDERSON GROUP PLC](/funds/1274173.md) | 2026-03-31 | $311.6m | 7,724,152 |  | Not compared |

## Recent filings

[All 1,187 filings](/companies/csgp/filings.md)

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-28 | 17:11 ET | [10-Q](/filings/0001057352-26-000083.md) | Quarterly report, period 2026-09-30 | 0001057352-26-000083 |
| 2026-10-27 | 16:05 ET | [8-K](/filings/0001057352-26-000078.md) | 1.01 Entry into a material agreement; 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000078 |
| 2026-08-21 | 16:03 ET | [8-K](/filings/0001057352-26-000072.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000072 |
| 2026-07-29 | 16:06 ET | [10-Q](/filings/0001057352-26-000066.md) | Quarterly report, period 2026-06-30 | 0001057352-26-000066 |
| 2026-07-28 | 16:05 ET | [8-K](/filings/0001057352-26-000061.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001057352-26-000061 |
| 2026-07-13 | 17:06 ET | [8-K](/filings/0001057352-26-000054.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000054 |
| 2026-06-25 | 09:00 ET | [8-K](/filings/0001057352-26-000048.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000048 |
| 2026-05-29 | 08:05 ET | [8-K](/filings/0001193125-26-246361.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-246361 |
| 2026-04-30 | 16:07 ET | [DEF 14A](/filings/0001193125-26-197205.md) | Proxy statement, period 2026-06-23 | 0001193125-26-197205 |
| 2026-04-29 | 16:09 ET | [10-Q](/filings/0001057352-26-000035.md) | Quarterly report, period 2026-03-31 | 0001057352-26-000035 |

## Latest annual report

[Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001057352-26-000020.md), filed Feb 26, 2026.

## Forecast league

Q3 FY2026, the quarter ended 2026-09-30, has been scored from the reported figures. [See the target](/leagues/2026q3/targets/47e6d6b6-cab4-4cfa-bdd0-1b94e1709ded)

## About the filer

- CIK: 1057352
- Tickers: CSGP
- Exchange: Nasdaq
- SIC code: 7389 Services-Business Services, NEC
- State of incorporation: DE
- Filer category: Large accelerated filer

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 29, 2026, 05:28 ET. No prices; not investment advice.