1. A fare collection and management system in a public transit network, comprising: a fare collection system configured to collect fare information from a number of passengers boarding or getting off a vehicle; a fare management system communicatively coupled to the fare collection system; a processing device; and a non-transitory computer readable medium in communication with the processing device, the computer readable medium storing one or more programming instructions for causing the processing device to: receive fare information from the fare collection system via a communication network and use the received fare information to determine a fare return series over a period of time, apply a Capital Asset Pricing Model to the fare return series to generate a report comprising a return versus volatility chart for a plurality of fare classes, output the report, and cause the fare management system to take an action based on the generated report.