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Volume on Finn Exchange
The volume shown on the Finn Exchange chart and in the trade history represents an aggregation of the price source volume and internal Finn Exchange traded volume. The last column in the trade history table shows whether the trade shown was performed on Finn Exchange (internally - "I") or on the price source exchange (externally - "E").
When an external trade is shown in the Trade History it is generated by the one side of the order book overlapping the other side. For example, if a buy trade shows up in the trade list, it means that the buy side of the order book overlapped the sell side of the order book. This is important because it means that if your order was at the bottom of the sell side and the buy side overlapped it, your order would have been filled.
In other words, although not all trades shown in the Trade History and the chart are trades performed on Finn Exchange, if your order would match the price of the trade, the order would have been filled. Therefore, for trading purposes the volume shown on Finn Exchange is indicative of what is happening on the price source exchange and is effective in the sense that the volume is filling orders and triggering stop-losses.
The Overlap volume model was developed to create an active trading environment and replicate the price source exchange.
If you place an order to buy 1 BTC at the price of 7000$ and you see a trade of 6990$ happening, it means your order was filled. It is not possible for the price to go past your order without filling it.