$1,000 in CoStar Group, Inc. in 2000 → $9,401 today
If you'd invested $1,000 in CoStar Group, Inc. (CSGP) on January 1, 2000 — at the December 1999 month-end close of $3.59 — and held to the latest close (2026-08-), you'd have $9,401. That's a +840.1% total return — beating the S&P 500, where the same $1,000 became $5,246.
Nearby years: 2001 · 2002 · 2003 · 2004 all years →
FAQ
How much is $1,000 invested in CSGP in 2000 worth today?
$1,000 invested in CoStar Group, Inc. (CSGP) at the month-end close of 1999-12- would be worth $9,401 at the latest month-end close (2026-08-), a total return of +840.1% with dividends reinvested.
Did $1,000 in CSGP in 2000 beat the market?
Over the same span, $1,000 in the S&P 500 index would be worth $5,246 — so CoStar Group, Inc. (CSGP) beat the index by +79.2%.
What does "month-end close" mean for this calculation?
The scenario invests at the December 1999 month-end close (the price entering 2000) and values the position at the most recent month-end close (2026-08-). Intra-month extremes are shown on the CSGP calculator page.
Is the 2000–2026 return in CSGP typical?
No single year is typical. CSGP's best calendar-year return since 1998 was about +184.1%, and its worst was -49.8%.
Methodology
CoStar Group, Inc. (CSGP) total-return data from January 2000 through the latest month-end close (2026-08-).
The entry price is the 1999 December month-end close and the exit is the latest available month-end close, both from adjusted (split and dividend) Yahoo Finance historical data.
Month-end resolution, no taxes or fees, and history never guarantees the future. For exact-date precision (including buying at a panic low), use the CSGP calculator page.
Compute your own CSGP scenario
Data: Yahoo Finance. As of 2026-08-. Not financial advice.