Investors concerned about the volatility that will accompany rising interest rates should consider a multi-strategy fund, says David Kupperman, portfolio manager for the Neuberger Berman Absolute Return Multi-Manager Fund. Kupperman says the most active strategy of late has been "event-driven" due to the surge in mergers and acquisitions. He says the spike in deals is a result of scarce top-line growth and a general inability to cut any additional costs. Kupperman says investors generally allocate between 10% and 30% of their assets in his multi-strategy fund, which is rebalanced quarterly.