When placing an order at a Bitcoin exchange the default order type will typically be a limit order.
Trading screens on most exchanges show order books containing a range of bid and ask prices and sizes.
Last month the owner of Bitcoin arbitrage service Bitcoin Trader, John Carley, suddenly announced the service would be closed down, after which he disappeared into the ether.
Among financial derivatives there are several instruments that may seem similar, but can potentially result in significant losses if not properly distinguished from each other.
Earlier this month, Chinese cryptocurrency exchange OKCoin announced it was launching Bitcoin Futures trading. It is one of many financial derivatives making its way to cryptocurrency markets.