CoStar Group Provides 2026 Outlook, Announces $1.5 Billion Share Repurchase

CoStar Group guided 2026 revenue of $3.78–$3.82 billion (about 18% growth vs. 2025 midpoint), net income $175–$215 million ($0.42–$0.52/share), adjusted EBITDA $740–$800 million and adjusted EPS $1.22–$1.33, and set medium-term targets of ~15% CAGR through 2028 and $1.25 billion adjusted EBITDA by 2028. The company approved a new $1.5 billion share repurchase program (after a $500 million accelerated buyback in 2025), highlighted a 337% surge in Homes.com subscribers since Q1 2024 while cutting 2026 net investment by >$300 million (from $850 million in 2025) and projecting Homes.com to be revenue-positive by 2029 and EBITDA-positive by 2030; shares were up over 3% in pre-market trading.

Analysis

Market structure: CoStar (CSGP) is the direct beneficiary — buyback ($1.5B), FY26 guidance (revenue $3.78–3.82B, adj. EBITDA $740–800M) and scale in Residential (Homes.com +337% subs) increase pricing power vs. smaller portals (Z, RDFN) and local brokers that lack CoStar's bundled data/AI stack. Competitors face higher customer acquisition costs and risk losing ad spend; landlords/agents gain better inventory/analytics, tightening demand for premium listings. Macro sensitivity: revenue still tied to ad/transaction volumes in housing; a 10% national housing activity decline would likely compress guidance by mid-to-high single digits.

Risk assessment: Tail risks include antitrust or data-privacy regulation targeting dominant data platforms, prolonged failure to monetize Homes.com (miss of >$300M planned reduction), or an unexpected housing downturn that pressures ad spend. Immediate reaction (days) should be a positive re-rate; short-term (quarters) execution risk around Homes.com spend reduction and subscriber monetization; long-term (to 2028) depends on hitting ~15% CAGR and $1.25B adj. EBITDA. Hidden dependencies: ad CPMs, regional housing cycles, and successful AI product rollout to reduce CACs; catalysts are quarterly subscriber monetization metrics, buyback execution updates, and AI product commercialization milestones.

Trade implications: Favor overweight CSGP vs. legacy portal peers; buybacks + guidance justify selective equity exposure sized to conviction with downside protection. Options/hybrid trades are attractive: long-dated calls or stock plus protective puts to capture convexity while hedging macro housing risk. Rotate modest capital from cyclical residential homebuilders and commodity-exposed names into PropTech names with clear buyback/leverage advantages.

Contrarian angles: Market may underprice the risk that Homes.com remains cash-burning past 2028 — guidance to hit revenue>expense by 2029 is long and binary; buybacks may mask weaker organic growth or limit M&A firepower in a downturn. Historical parallel: Zillow's capital-intensive pivots (iBuying) show execution and timing risk when consumer markets shift. If Homes.com monetization lags by >12 months, re-rate could be -20–30% from current levels; conversely, successful early monetization could drive upside of 30–50% by 2028.

Key Decisions for Investors

• Establish a 2–3% NAV long position in CSGP (buy shares) within the next 2 weeks; set a stop-loss at 15% below entry and plan to trim 50% of the position on reaching $85 (~25% upside) within 6–12 months.
• Implement a relative-value pair: long CSGP (1% NAV) and short Zillow (Z) (1% NAV) to capture execution and balance-sheet divergence; hold 6–12 months or until the spread narrows by >20% or CSGP misses Homes.com monetization milestones.
• Buy downside-protected convexity: purchase 12–18 month CSGP LEAP calls (e.g., Jan 2028 strikes in the 85–100 range) sized to 0.5–1% NAV, or alternatively buy shares and hedge with 12-month 20% OTM puts if macro housing risk rises.
• Reduce/exit exposure if CoStar fails to cut Homes.com net investment by at least $300M in 2026 vs. 2025 reported level, or if monthly paying subscriber conversion (revenue per paid sub) growth lags projections for two consecutive quarters — in either case cut position by 50% within 30 days.