Buy/Sell Volume - Tradingriot

This indicator estimates buy-side and sell-side volume using a RangeSplit model. Since TradingView does not provide true bid/ask aggressor data, the script allocates each bar’s volume based on where the close sits within the bar’s high–low range. The closer the close is to the high, the more of that bar’s volume is attributed to buying pressure. The closer it is to the low, the more is attributed to selling pressure.

How it works

Compute the bar’s total range
range = high − low

Locate the close inside that range
fraction = (close − low) / range

Allocate volume

Buy Volume = volume × fraction

Sell Volume = volume × (1 − fraction)

Apply an optional EMA smooth to stabilize the signals.

Plots

Buy Volume (green columns) – estimated buy-side participation

Sell Volume (red columns) – estimated sell-side participation

Delta Line (gray) – smoothed difference between buy and sell volume

Zero line – helps identify positive or negative volume imbalance

Use-case

This gives a quick visual read of dominant pressure inside each bar without relying on unreliable raw volume bars. It can help highlight shifts in control, volume imbalances, and momentum transitions on higher timeframes.

Limitations

This is a proxy, not true buy/sell volume. It does not access bid/ask or time-and-sales data. It simply distributes total volume by candle geometry.

If you want a clean and simple way to visualize who likely controlled the bar, this is as far as TradingView can go using OHLCV data.