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 PHD…
⚠ 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 | Sep 30 | 214K | $2.1M | 214K $2.1M | 2.72× +172% avg 79K · $766K, Sep 26, 2024 – Sep 29, 2025 |
| Last week 5 sessions | Sep 24 – Sep 30 | 839K | $8.4M | 168K $1.7M | 2.18× +118% avg 77K · $748K, Sep 20, 2024 – Sep 23, 2025 |
| Last month 21 sessions | Sep 2 – Sep 30 | 3.0M | $29.9M | 143K $1.4M | 1.99× +99% avg 72K · $696K, Aug 28, 2024 – Aug 29, 2025 |
| Last year 252 sessions | Comparing needs at least 252 sessions before the period; we hold 314 sessions since 2024-07-01. | ||||