Presets and rules
Each preset is the exact CleverScan rule this page runs on the latest published daily session. S&P 500 stocks: Stocks on the S&P 500 reference list captured with the published dataset. NYSE and Nasdaq stocks: Stocks listed on the NYSE or Nasdaq in the published dataset. Funds are excluded, and so are preferred shares, exchange-traded notes and debentures, warrants, rights and blank-check acquisition companies, by name.
| Preset | What it selects | Rule |
|---|---|---|
| Volume ≥ 2× average | Volume of the session divided by the average volume of the 20 sessions ending with it (volumeRatio) is at least 2. Values come from the latest published daily session (regular trading hours); the rule is evaluated once per published session, not tick by tick. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio >= 2) |
| Golden cross on volume | SMA 50 moved above SMA 200 since the previous session, with volume at least 1.5 times the 20-session average; this combines the moving-average event and volume conditions. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (sma50 > sma200 and sma50Ago1 <= sma200Ago1 and volumeRatio >= 1.5) |
| Volume above average | Session volume is above the 20-session average volume (volumeRatio above 1); the average includes the session itself. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio > 1) |
| Volume below average | Session volume is below the 20-session average volume (volumeRatio under 1). Rows are ordered by rel. volume (lowest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio < 1) |
| Volume ≤ half of average | Session volume is at most half of the 20-session average: a quiet session relative to the stock’s own recent activity. Rows are ordered by rel. volume (lowest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio <= 0.5) |
| Up on 1.5× volume | The close is above the previous close and volume is at least 1.5 times the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio >= 1.5 and changePercent > 0) |
| Down on 1.5× volume | The close is below the previous close and volume is at least 1.5 times the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio >= 1.5 and changePercent < 0) |
| Up on light volume | The close is above the previous close while volume is below 80% of the 20-session average. Rows are ordered by rel. volume (lowest first). | securityType = "Stock" and indexMembership contains "SP500" and (changePercent > 0 and volumeRatio < 0.8) |
| Down on light volume | The close is below the previous close while volume is below 80% of the 20-session average. Rows are ordered by rel. volume (lowest first). | securityType = "Stock" and indexMembership contains "SP500" and (changePercent < 0 and volumeRatio < 0.8) |
| New 50-day high on volume | The session’s high is the highest high of the last 50 sessions and volume is at least 1.5 times the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (high * 1.000001 >= close / (1 + hi50FromHighPct / 100) and volumeRatio >= 1.5) |
| Volume near 52-week high | Volume is at least 1.5 times the 20-session average and the close is within 5% of the highest high of the last 252 sessions. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio >= 1.5 and hi52wFromHighPct >= -5) |
| Volume above the 200-day | Volume is at least 1.5 times the 20-session average and the close is above its 200-session simple moving average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio >= 1.5 and close > sma200) |
| Volume and RS Rating ≥ 80 | Volume is at least twice the 20-session average and the RS Rating (1–100 percentile of weighted 12-month relative strength) is 80 or higher. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volumeRatio >= 2 and rsRating >= 80) |
| RSI above 70 on volume | RSI(14) is above 70 and volume is at least 1.5 times the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (rsi14 > 70 and volumeRatio >= 1.5) |
| Volume over 10M shares | At least 10 million shares traded in the session. Rows are ordered by volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (volume >= 10M) |
| Dollar volume ≥ $1B | Closing price multiplied by session volume (dollar volume) is at least $1 billion. Rows are ordered by volume (highest first). | securityType = "Stock" and indexMembership contains "SP500" and (close * volume >= 1B) |
| Large caps on 2× volume | NYSE and Nasdaq stocks with a market cap of at least $10 billion and volume at least twice the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (marketCap >= 10B and volumeRatio >= 2) |
| Mid caps on 2× volume | NYSE and Nasdaq stocks with a market cap from $2 billion to under $10 billion and volume at least twice the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (marketCap >= 2B and marketCap < 10B and volumeRatio >= 2) |
| Small caps on 2× volume | NYSE and Nasdaq stocks with a market cap from $300 million to under $2 billion and volume at least twice the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (marketCap >= 300M and marketCap < 2B and volumeRatio >= 2) |
| Average volume over 1M | NYSE and Nasdaq stocks averaging at least 1 million shares a session over the last 20 sessions. Rows are ordered by avg vol (20) (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (avgVol20 >= 1M) |
| Average volume over 500K | NYSE and Nasdaq stocks averaging at least 500,000 shares a session over the last 20 sessions. Rows are ordered by avg vol (20) (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (avgVol20 >= 500k) |
| Under $5 on 2× volume | NYSE and Nasdaq stocks closing under $5, averaging at least 500,000 shares, with volume at least twice the 20-session average. Rows are ordered by rel. volume (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (close < 5 and volumeRatio >= 2 and avgVol20 >= 500k) |
| Liquid stocks under $10 | NYSE and Nasdaq stocks closing under $10 that average at least 1 million shares a session over 20 sessions. Rows are ordered by avg vol (20) (highest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (close < 10 and avgVol20 >= 1M) |
| Dollar volume under $1M | NYSE and Nasdaq stocks whose closing price multiplied by session volume is under $1 million. Rows are ordered by volume (lowest first). | securityType = "Stock" and exchange in ("NYSE", "NASDAQ") and not (name contains "Preferred") and not (name contains " Notes") and not (name contains "Debentures") and not (name contains "Warrant") and not (name contains " Right") and not (name contains "Depositary Shares representing") and not (name contains "Acquisition Corp") and (close * volume < 1M) |
What this screen measures
Relative volume compares one stock with its own activity. The default rule selects a daily volumeRatio of at least 2. A two-million-share session is not automatically unusual: its meaning depends on the stock’s 20-session average. The average used here includes the measured session.
Read the rule with a worked example
With 2.4 million shares in the session and a 20-session average of 1.2 million, relative volume is 2.4 ÷ 1.2 = 2.00. It meets the default threshold exactly. At 2.39 million against the same average, the ratio is about 1.99 and does not meet it. These figures are hypothetical.
Choose the variant that matches the question
Separate rising-price and falling-price presets: heavy trading can accompany either. Quiet-volume rules answer another question. The dollar-volume variant multiplies the close by shares traded; that approximation differs from summing the value of every trade. Capitalization variants use NYSE and Nasdaq stocks rather than the narrower S&P 500 population.
Review the chart behind a match
Inspect the daily candle, the previous close and the news or earnings context. Compare the volume bar with several earlier bars and check whether an index rebalance or a single event dominates the session. A stock near a high on heavy volume differs from one recovering inside a long decline.
Keep the interpretation within the rule
Relative volume is a ratio of activity, not a count of buyers or evidence of institutional accumulation. A falling stock can have the largest ratio in the list. A daily ratio also differs from same-clock-time intraday relative volume.
Continue with
- How to screen for unusual volumeBuild a reproducible screen for unusual volume: choose a universe, define field units and thresholds, compare presets and inspect the matching daily charts.
A screen lists stocks whose published values meet a rule. It is a starting point for research, not a recommendation. Read the data and methodology notes for how sessions and calculations are defined.