TrueData Velocity features 6 various pricing strategies along with the pricing will depend on many symbols, exchanges, etcetera. This is because IB feed wasn't designed as tick-by-tick and by no means intended to produce time&revenue series, but instead exclusively to update TWS Show grid. All I want is NSE https://andersonhkkih.sharebyblog.com/28891429/5-simple-statements-about-data-feed-for-amibroker-explained