The nature of information systems is often complex and involves both human and nonhuman components. This is particularly true in an electronic market. Actor Network Theory (ANT) can be used in general to describe the actors, intermediaries, framing and power that are the most important components of such an electronic market, which we call a network. This chapter explores whether ANT can help to analyze electronic trading systems. And if so, can ANT help us to filter the success factors of a computer trading system like Eurex, the largest derivatives electronic market in the world? It highlights how ANT is useful to define the various components involved within an electronic market. Moreover, the chapter analyses ANT’s limitations in modeling computer-trading systems. This chapter concludes that ANT is useful to analyze an electronic market such as Eurex.