If that's for investment and not speculation then that person will be banging their head against the wall when they learn of DMS.SELLING. Costs 0.031 BTC per share and will be paying out around 0.008 BTC probably on Friday. Those 250 shares at 4.27 BTC each could purchase 34,435 shares of DMS.SELLING at 0.031 BTC each, which would make 275 BTC by this Saturday.
You misunderstand how DMS.Selling works.
The price of DMS.Selling will also drop with every dividend, the dividend is not your profit. You can only make profit by buying the DMS.Mining or DMS.Selling for less than they are going to get (kinda a bet of difficulty increase).