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 ACH…
⚠ 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 19 | 4.8M | $1.1M | 4.8M $1.1M | 4.13× +313% avg 1.2M · $2.3M, Jan 2 – Oct 16 |
| Last week 5 sessions | Oct 13 – Oct 19 | 16.0M | $4.3M | 3.2M $851K | 2.85× +185% avg 1.1M · $2.4M, Jan 2 – Oct 12 |
| Last month 21 sessions | Sep 21 – Oct 19 | 41.3M | $19.3M | 2.0M $920K | 1.81× +81% avg 1.1M · $2.5M, Jan 2 – Sep 18 |
| Last year 252 sessions | A full year is 252 sessions; we hold 200 sessions since 2026-01-02. | ||||