  In this paper we examine the process involved in the design and
implementation of a port-graph model to be used for the analysis of an
agent-based rational negligence model. Rational negligence describes the
phenomenon that occurred during the financial crisis of 2008 whereby investors
chose to trade asset-backed securities without performing independent
evaluations of the underlying assets. This has contributed to motivating the
search for more effective and transparent tools in the modelling of the capital
markets.
  This paper shall contain the details of a proposal for the use of a visual
declarative language, based on strategic port-graph rewriting, as a visual
modelling tool to analyse an asset-backed securitisation market.
