On 12 Nov 2026 our base value for CoStar Group is $106.96 a share, 255.3% above its $30.10 close; 1 of 1 valuation methods put it above the price.
| Method | Value | vs price | Basis |
|---|---|---|---|
| Discounted cash flow | — | — | the free cash flow base is 0.54% of market cap (floor 1%) — the terminal value carries the answer, not the cash flows |
| Exit multiple (P/E) | — | — | no exit multiple: the five-year median of 60.1x is 2.8x the 21.4x this name trades at today (limit 1.5x) — the market has re-rated the name, so its own history prices a business it is no longer paid for. The forward PE is not a substitute: it is today's price divided by earnings, and an anchor built from it can only restate the price |
| Sum of the parts | — | — | no sum of the parts: this run holds no segment disclosure for the name |
| Price to sales | $106.96 | +255.3% | the stock's own median price-to-sales of 11.7× |
| Tangible book | — | — | used only for lenders, where book value is the business |
| Price to FFO (REITs) | — | — | used only for REITs |
Each working is rebuilt by code from the valuation's own figures and checked against the published value.
The base value is the average of the methods kept in it:
| Method | Value |
|---|---|
| Price to sales | $106.96 |
One method is kept, so the base value is its value: $106.96
Base value $106.96 a share
One-year price simulation: a 10% chance the price is below $13.53 and a 10% chance it is above $57.98 in a year; a 45% chance it is higher than today's $30.10, from 56.48% volatility. The simulation assumes the price drifts up at our discount rate of 9.22% a year.
| Week | Price | Base value |
|---|---|---|
| 2 Oct 2026 | $27.38 | $17.26 |
| 9 Oct 2026 | $29.67 | $16.94 |
| 16 Oct 2026 | $32.31 | $31.88 |
| 23 Oct 2026 | $33.92 | $32.37 |
| 30 Oct 2026 | $30.17 | $106.96 |
| 6 Nov 2026 | $30.55 | $106.96 |
| 12 Nov 2026 | $30.10 | $106.96 |
Data as of 12 Nov 2026; financials to 30 Sep 2026. Sources: company filings via EODHD, SEC EDGAR, US Treasury. How these values are computed. Not investment advice.
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