How much did CoStar spend on share repurchases in H1 2026?

CoStar repurchased $587 million in stock during the first six months of 2026, as reported in the condensed consolidated statements of cash flows in the earnings release.

What was the average price paid per share?

The average repurchase price per share is not disclosed in this filing. The earnings release provides only the aggregate dollar amount ($587 million) without specifying the price per share or number of shares bought back.

Why is CoStar buying back stock?

While the filing does not explicitly state the rationale, the buyback occurs during a period of strong profitability inflection, with Adjusted EBITDA more than doubling year-over-year and the company achieving profitability in its residential segment for the first time. This suggests management views the stock as an attractive use of capital.

Is this a new buyback authorization or under an existing program?

This filing reports only the execution of repurchases; it does not announce a new authorization. The repurchases were conducted under a pre-existing stock repurchase program. The filing mentions a 'Stock Repurchase Program' in its risk factors but does not detail authorization amounts or remaining capacity.

How much cash does CoStar have after these buybacks?

CoStar reported $1,266 million ($1.27 billion) in cash and cash equivalents as of June 30, 2026, after the $587 million in repurchases during H1 2026. The company started the period with $1,633 million in cash as of December 31, 2025.

CSGP 8-K Filed 2026-07-28 Execution disclosure

CoStar repurchased $587M in stock during H1 2026

Real estate data company spent heavily on buybacks amid strong profitability inflection in Q2.

MechanismNot specified

What the filing says

CoStar Group reported in its Q2 2026 earnings release that the company repurchased stock totaling $587 million during the first half of 2026, as disclosed in the condensed consolidated statements of cash flows. This execution reflects continued capital allocation toward shareholders as the company delivered strong financial results, with Adjusted EBITDA more than doubling year-over-year to $184 million in Q2 and net income reaching $55 million, up significantly from $6 million in the prior-year quarter.

The filing does not specify the number of shares repurchased, the average price paid per share, or the execution mechanism (such as Rule 10b-18 open-market purchases or accelerated share repurchase). Weighted-average diluted shares outstanding fell from 424.3 million in Q2 2025 to 404.4 million in Q2 2026, reflecting the cumulative effect of repurchases and other share reductions over the period.

CoStar's buyback activity occurred during a period of operational transformation, with the company noting its first profitability milestone in the residential segment and launching new AI-powered tools including Apartments.com Ai. The company maintained $1.27 billion in cash and equivalents as of June 30, 2026, after the $587 million in share repurchases during the first six months of the year.

Repurchases of stock (587) — COSTAR GROUP, INC. 8-K filing · View on SEC EDGAR →

What this means

CoStar's $587 million in stock repurchases during H1 2026 represents a significant capital return during a period of strong profitability growth. The buyback activity reduced share count by approximately 5% year-over-year (diluted shares fell from 424.3M to 404.4M). This execution occurred without any new authorization announcement in this filing, suggesting the repurchases were conducted under an existing program. The magnitude of the buyback—roughly 7.4% of the company's market capitalization at typical valuations—reflects management confidence in valuation following the company's operational inflection and record Adjusted EBITDA guidance.

Frequently asked questions

How much did CoStar spend on share repurchases in H1 2026?: CoStar repurchased $587 million in stock during the first six months of 2026, as reported in the condensed consolidated statements of cash flows in the earnings release.
How many shares did CoStar buy back?: The filing does not disclose the number of shares repurchased in H1 2026. However, weighted-average diluted shares outstanding fell from 424.3 million in Q2 2025 to 404.4 million in Q2 2026, reflecting cumulative share reductions.
What was the average price paid per share?: The average repurchase price per share is not disclosed in this filing. The earnings release provides only the aggregate dollar amount ($587 million) without specifying the price per share or number of shares bought back.
Why is CoStar buying back stock?: While the filing does not explicitly state the rationale, the buyback occurs during a period of strong profitability inflection, with Adjusted EBITDA more than doubling year-over-year and the company achieving profitability in its residential segment for the first time. This suggests management views the stock as an attractive use of capital.
Is this a new buyback authorization or under an existing program?: This filing reports only the execution of repurchases; it does not announce a new authorization. The repurchases were conducted under a pre-existing stock repurchase program. The filing mentions a 'Stock Repurchase Program' in its risk factors but does not detail authorization amounts or remaining capacity.
How much cash does CoStar have after these buybacks?: CoStar reported $1,266 million ($1.27 billion) in cash and cash equivalents as of June 30, 2026, after the $587 million in repurchases during H1 2026. The company started the period with $1,633 million in cash as of December 31, 2025.

execution real-estate-tech buyback H1-2026 cash-return profitability-inflection

Source. This editorial summary is based on the SEC filing linked above. BuybackStocks aggregates and editorializes publicly available SEC EDGAR filings. Not investment advice. Past authorization announcements do not guarantee future repurchase activity or share price performance. See our full disclosures policy.