Relative volume compares how much a stock is trading now vs its usual pace. High RVOL means it’s “in play” — the fuel small-cap movers run on. Enter a ticker to see its volume and dollar volume for the last session, week, month and year, each against an average session.
Checking volume for ZS…
⚠ End-of-day data — this compares the last full session’s volume to the trailing average, not live intraday RVOL. Real-time intraday relative volume is on the roadmap. RVOL ≥ 2-3× often flags a stock in play; ≥ 5× is extreme.
Each period’s average session against the average session in the 252 sessions (one trading year) before it, so a period is never compared with itself. The year row is compared with the year before it.
| Period | Sessions | Shares | Dollar volume (est.) | Per session | vs average session before |
|---|---|---|---|---|---|
| Latest session 1 session | Oct 26 | 2.9M | $749.9M | 2.9M $749.9M | 0.95× −5% avg 3.0M · $526.5M, Oct 23, 2025 – Oct 23, 2026 |
| Last week 5 sessions | Oct 20 – Oct 26 | 14.7M | $3.59B | 2.9M $717.4M | 0.98× −2% avg 3.0M · $519.7M, Oct 17, 2025 – Oct 19, 2026 |
| Last month 21 sessions | Sep 28 – Oct 26 | 58.0M | $12.82B | 2.8M $610.5M | 0.94× −6% avg 2.9M · $509.6M, Sep 25, 2025 – Sep 25, 2026 |
| Last year 252 sessions | Oct 24, 2025 – Oct 26, 2026 | 768.4M | $132.98B | 3.0M $527.7M | 1.53× +53% avg 2.0M · $476.7M, Oct 22, 2024 – Oct 23, 2025 |