Precious Metals and Minerals Investment

Two days ago, I invested $500 into a Precious Metals and Minerals Mutal Fund. At the time I bought my shares, the price per share was $21.18. The next day, the price per share for the fund increased to $22.64. Therefore, the shares I bought at $500 are now worth $534, an increase of $34. I already had some money in the mutual fund from before, so I made around a $50 gain yesterday, which is just under half my paycheck for the day!