CoStar Group Inc. trailing returns
CoStar Group Inc.'s 10-year annualized return is +3.3% per year (+38.3% 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 September 18, 2026 — cumulative and annualized, with dividends on or off.
Trailing returns by period#
To 2026-09-18. Annualized (CAGR) for windows of a year or more.
| Period | Path | Annualized | Cumulative |
|---|---|---|---|
| 1 day | — | -0.7% | |
| 5 days | — | -4.5% | |
| 1 month | — | -7.3% | |
| YTD | — | -56.7% | |
| 1 year | -67.4% | -67.4% | |
| 5 years | -20.1% | -67.5% | |
| 10 years | +3.3% | +38.3% | |
| 20 years | +10.3% | +607.1% | |
| Since inception (1998) | +13.0% | +3066.4% |
Growth of CSGP
Actual index level (solid); dashed lines are each window's constant-rate path from start to today.
Methodology#
Trailing returns measure from the closest close about N years before the latest close (2026-09-18). 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. Total return reinvests dividends (from CSGP's split- and dividend-adjusted closes); price return excludes them. 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 +3.3% a year annualized (+38.3% 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 +10.3% a year (+607.1% cumulative).
- What is CoStar Group Inc.'s return since inception?
- Since 1998, CoStar Group Inc. (CSGP) has compounded at about +13.0% a year — +3066.4% in total.