Quick Answer
COSTAR GROUP, INC. reported Shares Outstanding of 417.90 million shares for fiscal year 2025.
COSTAR GROUP, INC. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 417.90M | +2.1% |
| 2024 | 409.50M | +0.3% |
| 2023 | 408.10M | +0.3% |
| 2022 | 406.70M | +3.0% |
| 2021 | 394.94M | +0.2% |
| 2020 | 394.29M | +975.3% |
| 2019 | 36.67M | +0.6% |
| 2018 | 36.45M | +0.9% |
| 2017 | 36.11M | +11.1% |
| 2016 | 32.51M | +0.0% |
| 2015 | 32.51M | +0.6% |
| 2014 | 32.32M | +12.0% |
| 2013 | 28.85M | +1.8% |
| 2012 | 28.35M | +11.5% |
| 2011 | 25.43M | +22.4% |
| 2010 | 20.77M | — |
- COSTAR GROUP, INC. showed an increase of +2.1% in Shares Outstanding compared to the prior fiscal year.
- Over the 2010–2025 period, COSTAR GROUP, INC.’s shares outstanding has grown by 1911.7% (from 20.77 million shares to 417.90 million shares).
- The most recent figure is from COSTAR GROUP, INC.’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 26, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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