Shares Outstanding for CoStar Group (CSGP)
According to CoStar Group's latest reported financial statements, the company's latest reported diluted shares outstanding is 419.60M. Diluted weighted-average shares outstanding is the share count used to compute per-share metrics like EPS. Buybacks lower it; new issuance, stock-based compensation, and convertible securities raise it. Multiply by the stock price for market capitalization.
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
CSGP
Currently viewingShares OutstandingSwitch metric
Latest period
419.60M
YoY change
+3.2%
5Y CAGR
+1.9%
Peak year (2025)
420.70M
Latest annual
420.70M
Shares Outstanding history chart for CoStar Group (CSGP) from 1997 to 2025
Shares Outstanding history table for CoStar Group (CSGP) from 1997 to 2025
| Fiscal year | Period ended | Reported | Shares Outstanding | YoY |
|---|---|---|---|---|
| 2025 | 420.70M | +3.2% | ||
| 2024 | 407.80M | +0.2% | ||
| 2023 | 406.90M | +2.3% | ||
| 2022 | 397.75M | +0.9% | ||
| 2021 | 394.16M | +2.8% | ||
| 2020 | 383.26M | +4.6% | ||
| 2019 | 366.30M | +0.5% | ||
| 2018 | 364.48M | +8.6% | ||
| 2017 | 335.59M | +3.5% | ||
| 2016 | 324.36M | +1.5% | ||
| 2015 | 319.50M | +4.3% | ||
| 2014 | 306.41M | +8.6% | ||
| 2013 | 282.12M | +4.7% | ||
| 2012 | 269.49M | +14.5% | ||
| 2011 | 235.27M | +13.6% | ||
| 2010 | 207.07M | +3.9% | ||
| 2009 | 199.25M | +1.9% | ||
| 2008 | 195.50M | +0.8% | ||
| 2007 | 194.04M | +1.2% | ||
| 2006 | 191.65M | +0.8% | ||
| 2005 | 190.07M | +1.0% | ||
| 2004 | 188.27M | +12.9% | ||
| 2003 | 166.74M | +5.8% | ||
| 2002 | 157.59M | +0.8% | ||
| 2001 | 156.36M | +3.3% | ||
| 2000 | 151.37M | +29.1% | ||
| 1999 | 117.27M | +62.6% | ||
| 1998 | 72.13M | +24.6% | ||
| 1997 | 57.89M | — |
Shares Outstanding values are taken from CoStar Group's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
Analysis
2025's annual diluted shares outstanding for CoStar Group (CSGP) came in at 420.70M – edged up 3.2% year-over-year.
Through 2020–2025 (5 years), CoStar Group diluted shares outstanding delivered a +1.9% annualised rate; sustaining 28 straight years of year-over-year growth.
Across the available history, diluted shares outstanding reached its high of 420.70M in 2025 and its low of 57.89M in 1997.
Among 8 Real Estate peers, CoStar Group (CSGP) ranks 5th; the peer median for diluted shares outstanding is 410.36M.
CoStar Group Shares Outstanding by Year
CoStar Group Shares Outstanding 2025: 420.70M
CoStar Group diluted shares outstanding in 2025 was 420.70M, edged up 3.2% from 2024. This figure represents the highest annual value in the available history.
CoStar Group Shares Outstanding 2024: 407.80M
CoStar Group diluted shares outstanding in 2024 was 407.80M, edged up 0.2% from 2023.
CoStar Group Shares Outstanding 2023: 406.90M
CoStar Group diluted shares outstanding in 2023 was 406.90M, edged up 2.3% from 2022.
CoStar Group Shares Outstanding 2022: 397.75M
CoStar Group diluted shares outstanding in 2022 was 397.75M, edged up 0.9% from 2021.
CoStar Group Shares Outstanding 2021: 394.16M
CoStar Group diluted shares outstanding in 2021 was 394.16M.
See more financial history for CoStar Group (CSGP).
Sector peers — Shares Outstanding
Companies in the same sector as CoStar Group, ranked by their latest diluted shares outstanding.
| Company | Shares Outstanding | Sector |
|---|---|---|
| Prologis, Inc. (PLD) | 958.02M | Real Estate |
| Realty Income Corporation (O) | 904.79M | Real Estate |
| Welltower Inc. (WELL) | 679.52M | Real Estate |
| American Tower Corporation (AMT) | 469.14M | Real Estate |
| Digital Realty Trust, Inc. (DLR) | 351.57M | Real Estate |
| Simon Property Group, Inc. (SPG) | 326.02M | Real Estate |
| Public Storage (PSA) | 175.90M | Real Estate |
| Equinix, Inc. (EQIX) | 98.12M | Real Estate |
Frequently asked questions
What is CoStar Group's diluted shares outstanding?
- Latest reported diluted shares outstanding for CoStar Group (CSGP) is 419.60M (period ending December 31, 2025).
How has CoStar Group diluted shares outstanding changed year-over-year?
- CoStar Group (CSGP) diluted shares outstanding changed +3.2% year-over-year on the latest annual filing.
What is the long-term growth rate of CoStar Group diluted shares outstanding?
- CoStar Group (CSGP) diluted shares outstanding compound annual growth rate is +1.9% over the most recent 5 years available.
When did CoStar Group diluted shares outstanding hit its highest annual value?
- CoStar Group diluted shares outstanding reached its highest annual value of 420.70M in 2025.
What was CoStar Group diluted shares outstanding in 2024?
- CoStar Group (CSGP) diluted shares outstanding in 2024 was 407.80M.
What was CoStar Group diluted shares outstanding in 2025?
- CoStar Group (CSGP) diluted shares outstanding in 2025 was 420.70M.
Metrics overview
Pick a metric for charts, filings, and peers — each row shows the latest TTM or annual value with year-over-year change.
Explore more
CSGP Overview
Company profile, financial tools, and key metrics
CSGP Revenue Counter
Earns $102.96 every second. See per minute, hour, and day.
CSGP Earnings Counter
Earns $0.24 per second net profit. See per minute, hour, and day.
CSGP Economic Scale
Exceeds Belize's GDP. Compare with world economies.
CSGP What If Invested
What if you had invested $1,000? See historical returns from any date.
CSGP How It Makes Money
Discover visual breakdown of $3.25B in revenue — where it comes from and where it goes.
CSGP Stock Seasonality
Best and worst months to invest. Historical monthly returns heatmap.
CSGP Price Target Scenarios
Model bear, base, and bull cases with EPS growth and exit P/E — pre-filled from analysts and history.
CSGP Daily Price Character
Explosive · 48.9% historical win rate (green days). Streaks & record days.
CSGP Buybacks
2.20% TTM buyback yield. Shareholder yield & SBC comparison.
CSGP Stock Split History
2 splits on record. Dates, ratios, and cumulative multiple.