Under normal circumstances, the fund will invest at least 80% of its net assets, plus borrowings for investment purposes, in U.S. Treasury fixed income securities. he Fund typically writes index put options and call options with weekly, monthly, and quarterly expirations. The fund will generally have up to ten credit spreads at any given time, with up to 20% exposure to a single ETF or index credit spread (measured at the time of purchase). It is non-diversified.