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 CMI…
⚠ 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 22 | 1.3M | $678.7M | 1.3M $678.7M | 1.33× +33% avg 980K · $568.3M, Oct 21, 2025 – Oct 21, 2026 |
| Last week 5 sessions | Oct 16 – Oct 22 | 6.5M | $3.44B | 1.3M $687.7M | 1.33× +33% avg 977K · $564.3M, Oct 15, 2025 – Oct 15, 2026 |
| Last month 21 sessions | Sep 24 – Oct 22 | 23.8M | $12.51B | 1.1M $595.8M | 1.18× +18% avg 960K · $550.5M, Sep 23, 2025 – Sep 23, 2026 |
| Last year 252 sessions | Oct 22, 2025 – Oct 22, 2026 | 247.2M | $143.43B | 981K $569.2M | 1.19× +19% avg 828K · $293.1M, Oct 18, 2024 – Oct 21, 2025 |