A mutual fund has an NAV of $100 today. After the market closes, it distributes a $5 dividend per share. Assuming the underlying asset prices don't change, what is the NAV tomorrow morning, and does the investor's total wealth change?

某只共同基金今天的净值是100美元，收盘后宣布每股派发5美元的分红。假设底层资产价格没变，明天开盘净值会变成多少？投资者的总财富有变化吗？