The Portfolio Monitoring model enables the ongoing monitoring and periodic valuation of a portfolio of financial investments. The model allows the entering of investment transactions during a reporting period to calcu late performance. Furthermore, incremental investment transactions undertaken during a period are fully accounted for in the period's performance calculations. Roll over of the model and archiving of transactions make this model ideal for monitoring y our portfolio on an ongoing basis. The key features of the Portfolio Monitoring Model include: Ease and flexibility of product and transaction input, with embedded help prompts; Accurate handling of distributions, investments, and divestments to calculat e returns. 'Rollover' option to reset the model for a new reporting period; and Storage of historical transactions.