7-Day Rally Sends Zscaler Stock Up 18%
Zscaler (ZS) – a cloud security platform for secure internet and workload access – hit a 7-day winning streak, with cumulative gains over this period amounting to 18%. The company’s market cap has surged by about $3.4 Bil over the last 7 days and currently stands at $22 Bil.
Is this an opportunity or a trap? There is not much to fear in ZS stock given its overall Strong operating performance and financial condition. This is aligned with the stock’s High valuation because of which we think it is Fairly Priced (For details, see Buy or Sell ZS).
But here is the interesting part. You are reading about this 18% move after it happened. The market has already priced in the news. To catch the next winner before the headlines, you need predictive signals, not notifications. High Quality Portfolio is based on an architecture that includes such signals.
Returns vs S&P 500
The following table summarizes the return for ZS stock vs. the S&P 500 index over different periods, including the current streak:
| Return Period | ZS | S&P 500 |
|---|---|---|
| 1D | 3.6% | -0.6% |
| 7D (Current Streak) | 18.3% | 3.6% |
| 1M (21D) | -7.8% | 8.6% |
| 3M (63D) | -32.3% | 3.9% |
| YTD 2026 | -37.9% | 3.2% |
| 2025 | 24.7% | 16.4% |
| 2024 | -18.6% | 23.3% |
| 2023 | 98.0% | 24.2% |
However, big gains can follow sharp reversals – but how has ZS behaved after prior drops? See ZS Dip Buyer Analysis to learn more.
Gains and Losses Streaks: S&P 500 Constituents
There are currently 75 S&P constituents with 3 days or more of consecutive gains and 43 constituents with 3 days or more of consecutive losses.
| Consecutive Days | # of Gainers | # of Losers |
|---|---|---|
| 3D | 28 | 32 |
| 4D | 24 | 4 |
| 5D | 15 | 4 |
| 6D | 1 | 3 |
| 7D or more | 7 | 0 |
| Total >=3 D | 75 | 43 |
Key Financials for Zscaler (ZS)
Last 2 Fiscal Years:
| Metric | FY2024 | FY2025 |
|---|---|---|
| Revenues | $2.2 Bil | $2.7 Bil |
| Operating Income | $-121.5 Mil | $-127.1 Mil |
| Net Income | $-57.7 Mil | $-41.5 Mil |
Last 2 Fiscal Quarters:
| Metric | 2026 FQ1 | 2026 FQ2 |
|---|---|---|
| Revenues | $788.1 Mil | $815.8 Mil |
| Operating Income | $-36.4 Mil | $-51.8 Mil |
| Net Income | $-11.6 Mil | $-34.3 Mil |
While ZS stock looks attractive given its winning streak, investing in a single stock without detailed, thorough analysis can be risky. The 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.