TLTX seeks current income and capital appreciation by investing in long-term US Treasury securities, including STRIP and/or ETFs with exposure to similar securities. The fund targets a portfolio with a duration of approximately 20 years. To generate income, the fund writes call options on US Treasury ETFs using standardized exchange-traded and FLEX options. The options strategy intends to limit sensitivity to declines in interest rates but will not limit its sensitivity when rates increase. The strategy generates income as share price from the ETFs increase, stay flat, or decrease slightly, but foregoes gains when share prices increase significantly. The fund may use European or American style options. European options can only be exercised at expiration and are settled in cash, while American options can be exercised at any time and are physically settled. To maintain its potential for capital appreciation, TLTX limits the sale of call options to only a portion of the funds net assets.