BTC Aggregated Volume merges all major crypto exchange volume and overlays it onto any asset. Select from different scales (true, xlarge, large, medium, low, very low) BTC to best fit the liquidity of the current charts asset. Aggregated chart is Histogram and current asset charts volume is transparent column. Useful for alts to clearly see BTC volume spikes on laging correlated coins, or whether or not the spike on the alts coin will follow through (if diverging from BTC volume).