6-Day Sell-Off Sends CoStar Stock Down -10%
CoStar (CSGP) – a commercial real estate information and analytics platform – hit a 6-day losing streak, with cumulative losses over this period amounting to -10%. The company’s market cap has crashed by about $1.7 Bil over the last 6 days and currently stands at $15 Bil.
Is this an opportunity or a trap? There is a near-equal mix of good and bad in CSGP stock given its overall Moderate operating performance and financial condition. Hence, despite its Moderate valuation, this makes the stock look Risky (For details, see Buy or Sell CSGP).
But here is the interesting part. You are reading about this -10% move after it happened. The market has already priced in the news. To manage individual stock risk before the headlines, you need predictive signals, not notifications. High Quality Portfolio has a risk model designed to manage stock-specific drawdowns better.
Returns vs S&P 500
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The following table summarizes the return for CSGP stock vs. the S&P 500 index over different periods, including the current streak:
| Return Period | CSGP | S&P 500 |
|---|---|---|
| 1D | -0.8% | -0.5% |
| 6D (Current Streak) | -10.2% | 0.4% |
| 1M (21D) | -9.6% | 12.1% |
| 3M (63D) | -45.7% | 2.3% |
| YTD 2026 | -46.5% | 4.3% |
| 2025 | -6.1% | 16.4% |
| 2024 | -18.1% | 23.3% |
| 2023 | 13.1% | 24.2% |
Gains and Losses Streaks: S&P 500 Constituents
There are currently 25 S&P constituents with 3 days or more of consecutive gains and 75 constituents with 3 days or more of consecutive losses.
| Consecutive Days | # of Gainers | # of Losers |
|---|---|---|
| 3D | 16 | 38 |
| 4D | 6 | 19 |
| 5D | 1 | 6 |
| 6D | 1 | 7 |
| 7D or more | 1 | 5 |
| Total >=3 D | 25 | 75 |
Key Financials for CoStar (CSGP)
Last 2 Fiscal Years:
| Metric | FY2024 | FY2025 |
|---|---|---|
| Revenues | $2.7 Bil | $3.2 Bil |
| Operating Income | $5.0 Mil | $-72.0 Mil |
| Net Income | $139.0 Mil | $7.0 Mil |
Last 2 Fiscal Quarters:
| Metric | 2025 FQ3 | 2025 FQ4 |
|---|---|---|
| Revenues | $833.6 Mil | $899.9 Mil |
| Operating Income | $-51.1 Mil | $49.1 Mil |
| Net Income | $-30.9 Mil | $46.5 Mil |
The losing streak CSGP stock is currently on doesn’t inspire much confidence among investors. In contrast, Trefis High Quality (HQ) Portfolio, with a collection of 30 stocks, has a track record of comfortably outperforming its benchmark that includes all 3 — the S&P 500, S&P mid-cap, and Russell 2000 indices. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.