CoStar Group Inc.
CSGP | NASDAQ
$28.77
-$0.27 (-0.93%)
Sep 22, 2026, 12:17 PM ET · Market open
Market Cap History History
Annual Market Cap Change Annual Change
| Date | Market Cap | Change | % Change |
|---|---|---|---|
| Sep 20, 2026 | $11.74B | -$16.4B | -58.29% |
| Dec 25, 2025 | $28.14B | -$1.24B | -4.23% |
| Dec 26, 2024 | $29.38B | -$6.07B | -17.12% |
| Dec 28, 2023 | $35.45B | $4.95B | +16.22% |
| Dec 29, 2022 | $30.5B | -$518.93M | -1.67% |
| Dec 30, 2021 | $31.02B | -$5.15B | -14.24% |
| Dec 30, 2020 | $36.17B | $14.43B | +66.33% |
| Dec 26, 2019 | $21.75B | $9.57B | +78.52% |
| Dec 27, 2018 | $12.18B | $2.55B | +26.43% |
| Dec 28, 2017 | $9.64B | $3.57B | +58.82% |
| Dec 29, 2016 | $6.07B | -$547.13M | -8.27% |
| Dec 30, 2015 | $6.61B | $634M | +10.60% |
| Dec 25, 2014 | $5.98B | $872.72M | +17.09% |
| Dec 26, 2013 | $5.11B | $2.73B | +114.75% |
| Dec 27, 2012 | $2.38B | $712.61M | +42.78% |
| Dec 29, 2011 | $1.67B | $491.06M | +41.81% |
| Dec 30, 2010 | $1.17B | $328.77M | +38.87% |
| Dec 30, 2009 | $845.86M | $250.5M | +42.07% |
| Dec 25, 2008 | $595.37M | -$290.23M | -32.77% |
| Dec 27, 2007 | $885.59M | -$121.39M | -12.05% |
| Dec 28, 2006 | $1.01B | n/a | n/a |
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