CoStar Basic Shares Outstanding 2012-2026 | CSGP

CoStar annual/quarterly basic shares outstanding history and growth rate from 2012 to 2026. Basic shares outstanding can be defined as the number of shares held by shareholders including insiders but not including a company's treasury shares.
  • CoStar basic shares outstanding for the quarter ending March 31, 2026 were $413M, a 0.61% increase year-over-year.
  • CoStar basic shares outstanding for the twelve months ending March 31, 2026 were $1.669B, a 2.44% increase year-over-year.
  • CoStar annual basic shares outstanding for 2025 were $0.417B, a 2.58% increase from 2024.
  • CoStar annual basic shares outstanding for 2024 were $0.406B, a 0.25% increase from 2023.
  • CoStar annual basic shares outstanding for 2023 were $0.405B, a 2.27% increase from 2022.
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CoStar Annual Basic Shares Outstanding
(Millions of US $)
2025 $417
2024 $406
2023 $405
2022 $396
2021 $392
2020 $381
2019 $363
2018 $361
2017 $332
2016 $322
2015 $320
2014 $302
2013 $277
2012 $265
2011 $231
CoStar Quarterly Basic Shares Outstanding
(Millions of US $)
2026-03-31 $413
2025-12-31 $417
2025-09-30 $420
2025-06-30 $420
2025-03-31 $411
2024-12-31 $406
2024-09-30 $407
2024-06-30 $406
2024-03-31 $406
2023-12-31 $405
2023-09-30 $406
2023-06-30 $405
2023-03-31 $405
2022-12-31 $396
2022-09-30 $395
2022-06-30 $393
2022-03-31 $393
2021-12-31 $392
2021-09-30 $392
2021-06-30 $392
2021-03-31 $392
2020-12-31 $381
2020-09-30 $392
2020-06-30 $375
2020-03-31 $365
2019-12-31 $363
2019-09-30 $363
2019-06-30 $363
2019-03-31 $362
2018-12-31 $361
2018-09-30 $361
2018-06-30 $361
2018-03-31 $359
2017-12-31 $332
2017-09-30 $324
2017-06-30 $324
2017-03-31 $323
2016-12-31 $322
2016-09-30 $322
2016-06-30 $322
2016-03-31 $321
2015-12-31 $320
2015-09-30 $320
2015-06-30 $320
2015-03-31 $318
2014-12-31 $302
2014-09-30 $317
2014-06-30 $291
2014-03-31 $283
2013-12-31 $277
2013-09-30 $278
2013-06-30 $276
2013-03-31 $274
2012-12-31 $265
2012-09-30 $272
2012-06-30 $265
2012-03-31 $251
2011-12-31 $231
2011-09-30 $250
2011-06-30 $220
Sector Industry Market Cap Revenue
Computer and Technology Information Technology Services $15.314B $3.247B
CoStar Group, Inc. provides information services to the commercial real estate industry. Their wide array of digital service offerings includes a leasing marketplace, a selling marketplace, sales comparable information, decision support, contact management, tenant information, property marketing, and industry news. They have three assets that provide a unique foundation for this marketplace: comprehensive national databases; large research department; and large number of participating organizations.
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