Takes Tradingviews Upside Volume for NYSE and divides it by Total Volume on NYSE.
Tradingview's data source generally has different volume figures than say the Wall Street Journal. Therefore, this indicator is an estimate.
10% upside volume shows extreme panic and is consistent with market sell offs.
90% upside days, following a decline, are often occur within a week or so of significant market bottoms.
Recommend using columns as the plot type.
Based on research of LowryResearch Corp.