CoStar Group Inc. trailing returns
CoStar Group Inc.'s 10-year return is +5.9% a year (CAGR) (+77.5% cumulative). How CoStar Group Inc. (CSGP) has performed over the last day, week, month and year, over 5, 10 and 20 years, and since inception, through November 4, 2026 — price return and dividends side by side, with the worst drop inside each window.
Trailing returns by period#
To 2026-11-04. Price return + dividends = total return. Worst drop: the deepest fall in the price from a high inside the window, and when it bottomed.
| Period | Price | DivsDividends | Total | Worst drop |
|---|---|---|---|---|
| Cumulative · the change over the window | ||||
| 1 day | +4.0% | +0.0% | +4.0% | — |
| 5 days | +18.3% | +0.0% | +18.3% | -1.6%Nov 3 |
| 1 month | +19.0% | +0.0% | +19.0% | -22.3%Oct 28 |
| YTD | -51.5% | +0.0% | -51.5% | -59.9%Sep 29 |
| Per year (CAGR) · the cumulative total return beneath | ||||
| 1 year | -53.3% | +0.0% | -53.3% CAGR | -61.7%Sep 2026 |
| 5 years | -17.3% | +0.0% | -17.3% CAGR-61.3% total | -72.4%Sep 2026 |
| 10 years | +5.9% | +0.0% | +5.9% CAGR+77.5% total | -73.0%Sep 2026 |
| 20 years | +10.1% | +0.0% | +10.1% CAGR+590.0% total | -73.0%Sep 2026 |
| Since 1998Since inception (1998) | +13.4% | +0.0% | +13.4% CAGR35.5x total | -73.0%Sep 2026 |
Growth of CSGP#
Actual level with dividends reinvested (solid); dashed lines are each window's constant-rate path from start to today.
- 5 years-17.3%/year · -61.3%
- 10 years+5.9%/year · +77.5%
- 20 years+10.1%/year · +590.0%
- Since inception (1998)+13.4%/year · +3446.3%
Methodology#
Trailing returns measure from the closest close about N years before the latest close (2026-11-04). Cumulative return is the total change over the window; annualized return is the compound annual growth rate (CAGR), shown for windows of a year or more. Price return is the change in CSGP's closing price; total return reinvests dividends (from its split- and dividend-adjusted closes); the dividends column is the difference between the two. The worst drop is the largest fall in the closing price from a high to a later low inside the window, the way a drawdown is usually quoted. See the year-by-year returns for the calendar breakdown. Past performance does not predict future returns; not investment advice.
FAQ#
- What is CoStar Group Inc.'s 10-year return?
- Over the last 10 years, CoStar Group Inc. (CSGP) returned about +5.9% a year annualized (+77.5% cumulative total return).
- What is CoStar Group Inc.'s 20-year annualized return?
- Over the last 20 years, CoStar Group Inc. (CSGP) compounded at about +10.1% a year (+590.0% cumulative).
- What is CoStar Group Inc.'s return since inception?
- Since 1998, CoStar Group Inc. (CSGP) has compounded at about +13.4% a year — +3446.3% in total.