What If You Invested $1,000 in CoStar Group (CSGP)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
CoStar Group
CSGP
Historical extremes
Maximum profit (buy at all-time low, sell at peak), maximum drawdown (peak to trough), and total return from IPO to current price.
Max profit
+18034.54% (181.3 times)
- Buy
- Sep 11, 1998
- $0.55
- Sell
- Oct 26, 2021
- $99.74
Buying CSGP at the all-time low and selling at the peak would have turned $1,000 into $181,345.45.
Max drawdown
-71.10% (fell to 29% of peak)
- Peak
- Mar 13, 2000
- $5.21
- Trough
- Mar 21, 2001
- $1.51
The worst decline for CSGP was -71.10% (fell to 29% of peak) from peak to trough.
IPO to current
+4647.76% (47.5 times)
- IPO
- Jul 1, 1998
- $0.92
- Current
- Mar 16, 2026
- $43.62
A $1,000 investment in CSGP at IPO would be worth $47,477.55 today.
Dollar amounts based on selected investment ($1,000)
Frequently asked questions
What is CoStar Group (CSGP) stock's all-time high and all-time low?
- CoStar Group (CSGP) stock's all-time low was $0.55 on Sep 11, 1998. The all-time high was $99.74 on Oct 26, 2021.
What if you invested $1,000 in CoStar Group (CSGP) stock at the all-time low?
- Buying CoStar Group (CSGP) stock at the all-time low ($0.55 on Sep 11, 1998) and selling at the peak ($99.74 on Oct 26, 2021) would have turned $1,000 into $181,345.45. Historical return: +18034.54% (181.3 times).
What are CoStar Group (CSGP)'s best buy and sell dates for maximum profit?
- The best buy date for CoStar Group (CSGP) stock was Sep 11, 1998 (all-time low at $0.55). The best sell date was Oct 26, 2021 at $99.74. This investment would have returned +18034.54% (181.3 times).
What was CoStar Group (CSGP) stock's maximum drawdown?
- CoStar Group (CSGP) stock's worst decline was -71.10% (fell to 29% of peak) from peak to trough. Peak: $5.21 on Mar 13, 2000. Trough: $1.51 on Mar 21, 2001. A $1,000 investment at the peak would have been worth $288.97 at the trough.
What if you bought CoStar Group (CSGP) stock at IPO?
- A $1,000 investment in CoStar Group (CSGP) stock at IPO ($0.92 on Jul 1, 1998) would be worth $47,477.55 today. Historical return: +4647.76% (47.5 times). Current stock price: $43.62 as of Mar 16, 2026.
What if you invested $1,000 in CoStar Group (CSGP) 5 years ago?
- A $1,000 investment in CoStar Group (CSGP) stock 5 years ago ($83.87 on Mar 16, 2021) would be worth $520.1 today. Historical return: -47.99% (0.52 times). Current stock price: $43.62 as of Mar 16, 2026.
What if you invested $1,000 in CoStar Group (CSGP) 10 years ago?
- A $1,000 investment in CoStar Group (CSGP) stock 10 years ago ($18.41 on Mar 16, 2016) would be worth $2,369.36 today. Historical return: +136.94% (2.37 times). Current stock price: $43.62 as of Mar 16, 2026.
What if you invested $1,000 in CoStar Group (CSGP) 20 years ago?
- A $1,000 investment in CoStar Group (CSGP) stock 20 years ago ($5.1 on Mar 16, 2006) would be worth $8,549.59 today. Historical return: +754.96% (8.55 times). Current stock price: $43.62 as of Mar 16, 2026.
About this data
- How does the investment calculator work?
- Enter an investment amount and a start date. We use historical stock prices to calculate how many shares you would have bought, then apply the current price to show your hypothetical portfolio value and return.
- What are Historical extremes?
- Max profit: buy at all-time low, sell at the highest price after. Max drawdown: the largest peak-to-trough decline in price. IPO to current: total return from IPO date to the latest price.
- What is Max drawdown?
- Maximum drawdown is the largest peak-to-trough decline in price. It shows the worst drop from any prior high to a subsequent low. Peak and Trough are the dates and prices at which this decline occurred.
- Does this include dividends?
- The calculator uses adjusted closing prices when available, which account for stock splits and dividends. For the most accurate results, we recommend using data that includes dividend adjustments.
- Where does the price data come from?
- Historical prices are from Yahoo Finance, adjusted for stock splits and dividends. We use adjusted close for all calculations.
- How are the dollar amounts in the cards calculated?
- The dollar amounts in Historical extremes use the investment amount you select in the calculator above (e.g. $1,000). They show what your investment would have been worth at the Buy/Peak/IPO date versus the Sell/Trough/Current date.
- What date range can I use?
- The available date range depends on our historical price data for CSGP. You can select any date between our first and most recent data point.