The British Virgin Islands-based asset manager said it made the change because of a renewed interest in gold after a price slump last year.
Castlestone said many investors see gold as a “safe haven asset” in times of political turmoil, citing the tension between Russia and Ukraine.
The fund, which offers direct exposure rather than through equities, also includes hedged currency.
Chief executive Angus Murray said: “This is a continued shift on behalf of Castlestone Management to increase liquidity within our funds.
“The ability to provide daily liquidity in an increasingly volatile market has been an important factor for many investors across the retail and institutional space.”
He added that the company is taking advantage of a recent lull in gold prices.
“With the cost of production at around $1300/oz. and robust demand coming from the world’s two largest consumers, China and India, we believe that longer term supply and demand fundamentals will remain supportive of prices.”
In March, the company launched the Castlestone Management Equity High Yield and Premium Income Fund after a four month soft launch.
The fund aims to provide smooth returns to investors by allocating to a portfolio of listed, exchange-traded equities.
Castlestone ran into difficulties in 2011 as a number of the products it offered had relatively high underlying leveraging, causing them to feel the force of the economic downturn significantly more than other players.
These difficulties led it to wind up a number of its funds in August 2011.