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 HCA…
⚠ 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 16 | 1.7M | $791.8M | 1.7M $791.8M | 1.29× +29% avg 1.3M · $593.9M, Oct 15, 2025 – Oct 15, 2026 |
| Last week 5 sessions | Oct 12 – Oct 16 | 6.2M | $2.85B | 1.2M $571.0M | 0.92× −8% avg 1.3M · $594.8M, Oct 9, 2025 – Oct 9, 2026 |
| Last month 21 sessions | Sep 18 – Oct 16 | 28.4M | $12.47B | 1.4M $594.0M | 1.01× +1% avg 1.3M · $591.2M, Sep 17, 2025 – Sep 17, 2026 |
| Last year 252 sessions | Oct 16, 2025 – Oct 16, 2026 | 337.8M | $149.93B | 1.3M $595.0M | 0.90× −10% avg 1.5M · $529.5M, Oct 14, 2024 – Oct 15, 2025 |