CoStar Shares Outstanding 2012-2026 | CSGP

CoStar shares outstanding history from 2012 to 2026. Shares outstanding can be defined as the number of shares held by shareholders (including insiders) assuming conversion of all convertible debt, securities, warrants and options. This metric excludes the company's treasury shares.
  • CoStar shares outstanding for the quarter ending June 30, 2026 were 0.404B, a 4.69% decline year-over-year.
  • CoStar 2025 shares outstanding were 0.421B, a 3.16% increase from 2024.
  • CoStar 2024 shares outstanding were 0.408B, a 0.22% increase from 2023.
  • CoStar 2023 shares outstanding were 0.407B, a 2.29% increase from 2022.
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CoStar Annual Shares Outstanding
(Millions of Shares)
2025 421
2024 408
2023 407
2022 398
2021 394
2020 383
2019 366
2018 364
2017 336
2016 324
2015 320
2014 306
2013 282
2012 269
2011 235
CoStar Quarterly Shares Outstanding
(Millions of Shares)
2026-06-30 404
2026-03-31 414
2025-12-31 421
2025-09-30 420
2025-06-30 424
2025-03-31 411
2024-12-31 408
2024-09-30 408
2024-06-30 407
2024-03-31 407
2023-12-31 407
2023-09-30 407
2023-06-30 407
2023-03-31 406
2022-12-31 398
2022-09-30 396
2022-06-30 394
2022-03-31 394
2021-12-31 394
2021-09-30 394
2021-06-30 394
2021-03-31 394
2020-12-31 383
2020-09-30 394
2020-06-30 377
2020-03-31 368
2019-12-31 366
2019-09-30 367
2019-06-30 366
2019-03-31 366
2018-12-31 364
2018-09-30 365
2018-06-30 365
2018-03-31 364
2017-12-31 336
2017-09-30 328
2017-06-30 327
2017-03-31 326
2016-12-31 324
2016-09-30 324
2016-06-30 324
2016-03-31 324
2015-12-31 320
2015-09-30 320
2015-06-30 320
2015-03-31 318
2014-12-31 306
2014-09-30 321
2014-06-30 295
2014-03-31 288
2013-12-31 282
2013-09-30 283
2013-06-30 282
2013-03-31 274
2012-12-31 269
2012-09-30 277
2012-06-30 265
2012-03-31 255
2011-12-31 235
2011-09-30 253
Sector Industry Market Cap Revenue
Computer and Technology Information Technology Services $13.055B $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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