Abstract: In illustrative embodiments, systems and methods for managing processing resources of a computing grid coordinate calculation of operations supporting real-time or near real-time risk hedging decisions. A data input interface transforms a received real-time data stream including real-time financial market data and trade updates for a user into a data structure format compatible with computing resources. Computing resources of a computing grid calculate variable annuity calculation results for allocated processing tasks associated with the received data stream. A task manager server divides the transformed data stream into processing tasks, controls allocation and deallocation of the processing tasks to the computing resources, and aggregates computation results into an output array representing evaluation results for the received data stream.