Monthly dividend stocks are attractive for income investors who are looking for more frequent payouts. Most stocks that pay dividends do so on a quarterly or semi-annual schedule.But monthly dividend stocks pay shareholders each month, for 12 payments per year.Many of these monthly dividend stocks offer high yields. This article will discuss three of the top high-yielding monthly dividend stocks today.Main Street Capital (MAIN)Source: Piotr Swat / ShutterstockMain Street Capital is a business development co ...