CSGP
Costar Group
PE ratio, current and historical analysis
- Stocks
- Real Estate
- NASDAQ: CSGP
- PE Ratio
As at Oct 2, 2026, the CSGP stock has a P/E ratio of 144.11. This is based on the current EPS of $0.19 and the stock price of $27.38 per share. A decrease of 90% has been recorded in the PE ratio compared to the average of 1467.7 of the past four quarters.
CSGP PE ratio history
The mean historical PE ratio of Costar Group over the last ten years is 248.61. The current 144.11 price-to-earnings ratio is 42% less than the historical average. In the past ten years, CSGP's PE ratio reached its highest point in the Dec 2025 quarter at 3,362, with a price of $67.24 and an EPS of $0.02. The Dec 2018 quarter saw the lowest point at 51.11, with a price of $33.73 and an EPS of $0.66.
Costar Group PE ratio by year
Maximum annual increase: 1,496.69% in 2025
Maximum annual decrease: -36.32% in 2018
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| 2025 | 3,362 | 1,496.69% | $67.24 | $0.02 |
| 2024 | 210.56 | 121.67% | $71.59 | $0.34 |
| 2023 | 94.99 | 14.31% | $87.39 | $0.92 |
| 2022 | 83.1 | -21.14% | $77.28 | $0.93 |
| 2021 | 105.37 | -31.6% | $79.03 | $0.75 |
| 2020 | 154.05 | 124.01% | $92.43 | $0.6 |
| 2019 | 68.77 | 34.55% | $59.83 | $0.87 |
| 2018 | 51.11 | -36.32% | $33.73 | $0.66 |
| 2017 | 80.26 | 10.7% | $29.7 | $0.37 |
| 2016 | 72.5 | N/A | $18.85 | $0.26 |
| 2015 | N/A | N/A | $20.67 | -$0.01 |
| 2014 | 122.42 | -27.04% | $18.36 | $0.15 |
| 2013 | 167.8 | -24.9% | $18.46 | $0.11 |
| 2012 | 223.43 | 100.89% | $8.94 | $0.04 |
| 2011 | 111.22 | 35.25% | $6.67 | $0.06 |
Costar Group PE ratio by quarter (TTM)
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| Jun 2026 | 149.05 | -77.83% | $28.32 | $0.19 |
| Mar 2026 | 672.33 | -80% | $40.34 | $0.06 |
| Dec 2025 | 3,362 | 99.24% | $67.24 | $0.02 |
| Sep 2025 | 1,687.4 | 424.69% | $84.37 | $0.05 |
| Jun 2025 | 321.6 | 17.71% | $80.4 | $0.25 |
| Mar 2025 | 273.21 | 29.75% | $79.23 | $0.29 |
| Dec 2024 | 210.56 | 20.02% | $71.59 | $0.34 |
| Sep 2024 | 175.44 | 23.05% | $75.44 | $0.43 |
| Jun 2024 | 142.58 | 6.27% | $74.14 | $0.52 |
| Mar 2024 | 134.17 | 41.25% | $96.6 | $0.72 |
| Dec 2023 | 94.99 | 23.54% | $87.39 | $0.92 |
| Sep 2023 | 76.89 | -17.06% | $76.89 | $1 |
| Jun 2023 | 92.71 | 23.88% | $89 | $0.96 |
| Mar 2023 | 74.84 | -9.94% | $68.85 | $0.92 |
| Dec 2022 | 83.1 | 2.61% | $77.28 | $0.93 |
CSGP Price vs fair value
CSGP average PE ratio chart
What this chart measures
The Historical Valuation Regime chart shows where the stock's current valuation sits relative to its own historical valuation range over the selected lookback period.
This is a history-relative tool, not a market-relative percentile. It does not compare the stock to other companies. Instead, it compares each historical valuation reading to the stock's own past readings.
Percentile logic
The threshold lines are calculated them from the stock's real historical values using percentile interpolation. That is why some colored bands are narrow while others are wide: the band widths reflect how the stock actually traded through time.
Regime map
| Historical percentile | Regime | Chart meaning |
|---|---|---|
| 0-10 | Historically Low | Deep cheap zone |
| >10-25 | Below Average | Cheap relative to history |
| >25-75 | Average | Within the normal historical range |
| >75-90 | Above Average | Expensive relative to history |
| >90-100 | Historically High | Extreme or stretched valuation |
How to read each part
| Chart element | What it tells you |
|---|---|
| Main line | The actual historical valuation values over time for the selected metric. |
| Dashed horizontal lines | The stock's computed P10, P25, Median, P75, and P90 thresholds for the selected period. |
| Colored bands | The historical valuation zones between those thresholds. |
| Metric boxes | Current ratio, historical median, current percentile, and current regime. |
| Timeline strip | A condensed regime history showing how the stock moved between cheap, fair, and expensive states across each observation. |
Important metric definitions
Current Percentile is the percentile rank of the latest valid historical observation within the selected lookback range.
Current Regime is assigned directly from the latest observation's percentile bucket using the fixed 10 / 25 / 75 / 90 cutoffs shown above.
How to use it well
This chart is most useful for answering a narrow question: Is this stock trading high, low, or normal relative to its own history? It works best alongside growth, profitability, and forward-looking business analysis, because a stock can deserve a higher or lower regime if its business quality has changed.
Currently, CSGP's PE ratio is lower than the 3, 5 and 10-year averages.
PE comparison
With a P/E of 144.11, CSGP stands above the Real Estate sector and the industry average.
CSGP PE vs peers
Frequently asked questions
What is Costar Group's PE ratio?
As of Oct 2, 2026, CSGP stock has a price to earnings ratio of 144.11.
What is the 3-year average PE ratio for Costar Group (CSGP)?
The 3-year average PE ratio for CSGP stock is 656.67.
What is the 5-year average PE ratio for Costar Group (CSGP)?
The 5-year average PE ratio for CSGP stock is 415.45.
What is the highest PE ratio for CSGP?
Over the last ten years, the quarterly PE ratio reached a historic high of 3,362 in the Dec 2025 quarter.
How does the current PE ratio for CSGP compare to its historical average?
CSGP's current price to earnings ratio is 42% below its 10-year historical average.
Why is Costar Group's PE ratio so high?
A company with a higher PE ratio may indicate that the market has higher growth expectations for the company's future earnings or profitability.
How is CSGP's PE ratio calculated (Costar Group PE ratio formula)?
To determine the P/E ratio, divide the latest stock price by the TTM earnings per share (EPS). As of today (Oct 2, 2026), Costar Group's stock price is $27.38. The earnings per share for the trailing twelve months (TTM) ending Jun 2026 is $0.19. Therefore, Costar Group's price to earnings ratio for today is 144.11. PE RATIO(144.11) = STOCK PRICE($27.38) / TTM EPS($0.19)
All PE ratio stats are based on quarterly TTM periods, unless otherwise specified.