A good relative volume (RVOL) for day trading is usually 1.5 or higher. An RVOL of 2.0 or higher often points to stronger-than-normal activity and can be useful for momentum, breakout and trend-following setups.
RVOL is only a screening measure. A stock with an RVOL of 3.0 can still be difficult to trade if it has a wide bid-ask spread, low dollar volume or poor order execution.
Reviewed:
Relative Volume Thresholds for Day Trading
| RVOL reading | What it means | Typical use |
|---|---|---|
| Below 1.0 | Volume is below its comparison average | Often weak for momentum trading |
| 1.0 to 1.5 | Normal to moderately elevated activity | May suit liquid stocks or mean-reversion setups |
| 1.5 to 2.0 | Volume is clearly above its comparison average | A useful starting range for many day traders |
| 2.0 to 3.0 | Strong unusual activity | Often useful for breakouts and momentum trades |
| Above 3.0 | Very high activity | Can create opportunity, along with more volatility and slippage |
These are trading guidelines, not official market rules. The useful threshold depends on the stock's liquidity, float, spread, trading setup and strategy.
What Does Relative Volume Measure?
Relative volume compares current trading volume with an average volume baseline.
RVOL = Current volume ÷ Average comparable volume
For example, suppose a stock has traded 800,000 shares by 11:00 a.m. and normally trades 400,000 shares by that time. Its relative volume is 2.0.
TradingView's standard Relative Volume indicator compares current volume with the average volume from previous periods. Its Relative Volume at Time indicator compares activity at the same point in the trading session across previous days.
Use Time-of-Day Relative Volume When Possible
For intraday trading, relative volume measured at the same time of day is usually more useful than a simple daily volume comparison.
Volume is not distributed evenly across the session. The open and close often have more activity than the middle of the day. Comparing a stock's volume at 9:35 a.m. with its average volume at 2:00 p.m. can produce a misleading result.
A better comparison is:
Current cumulative volume at 10:30 a.m. compared with the stock's average cumulative volume at 10:30 a.m. over previous sessions.
Check how your platform calculates RVOL. TradingView separates standard Relative Volume from Relative Volume at Time, and its settings can use regular or cumulative volume.
A Practical RVOL Rule for Day Traders
For a basic day-trading screen, consider looking for:
- RVOL of at least 1.5
- RVOL of 2.0 or higher for momentum trades
- A clear reason for the activity, such as earnings, news, a guidance update or a sector move
- A tight bid-ask spread
- Enough dollar volume for your position size
- Price movement that confirms the volume
High RVOL is more useful when it appears with a breakout, trend or test of a clearly defined support or resistance level. A high reading without a corresponding price move may not offer a tradeable setup.
Does RVOL Show Whether Buyers or Sellers Are in Control?
No. Relative volume measures the amount of trading activity, not its direction.
An RVOL of 3.0 can occur when:
- Buyers are lifting offers aggressively
- Sellers are hitting bids
- The stock is reversing sharply
- Traders are closing positions after a failed breakout
- News is creating fast movement in both directions
Use price structure, candles, VWAP, key levels and the direction of the move to interpret the volume.
Why RVOL 2.0 May Be More Useful Than RVOL 5.0
A higher RVOL is not automatically a better trading opportunity.
An RVOL of 5.0 may reflect:
- A genuine news event and strong momentum
- A sudden price shock
- A crowded trade
- Halt risk
- Very wide spreads
- Fast reversals and heavy slippage
For many traders, an RVOL between 1.5 and 3.0 offers a more manageable balance between activity and execution quality. Readings above 3.0 can still be useful, but they call for tighter risk controls and faster decisions.
Check Liquidity, Not Just Relative Volume
FINRA notes that higher trading volume generally supports better liquidity, while low-liquidity securities can have wider spreads and may be harder to trade quickly at a fair price.
Before entering a trade, check:
- Bid-ask spread: A narrow spread can reduce entry and exit costs.
- Dollar volume: Share volume alone can be misleading. One million shares at $2 is very different from one million shares at $100.
- Order-book depth: Thin depth can cause a larger price move when you enter or exit.
- Average true range: The stock needs enough movement to justify the trading risk and costs.
- Position size: A stock may be liquid for 100 shares but difficult to trade with 10,000 shares.
A stock with RVOL 1.5 and strong liquidity may be easier to trade than a stock with RVOL 5.0 and a wide spread.
A Simple Day-Trading Scan Rule
For a basic momentum watchlist, consider screening for:
- RVOL of 1.5 or higher
- RVOL of 2.0 or higher as the preferred momentum threshold
- A tight spread
- Strong dollar volume
- A current news event or other clear reason for the activity
- Relative strength or weakness compared with the market or sector
- A defined entry, stop-loss and profit target
Treat RVOL as a filter for market attention, not as an entry signal by itself.
Bottom Line
Use 1.5 RVOL as a starting point for day-trading screens and 2.0 RVOL as a stronger threshold for momentum and breakout setups. Then check the time-of-day comparison, spread, dollar volume, price action and trade risk.
Do not buy or short a stock solely because its RVOL is high. High volume can create opportunity, but it can also increase volatility, execution risk and losses. FINRA warns that day trading is risky and may not suit traders with limited resources, experience or risk tolerance.