Walmart Stores Inc. is delving deeper into financial services at its stores and shaking up the money transfer business. The world’s largest retailer introduced a money transfer service Thursday that it says will cut fees for its low-income customers by up to 50 percent, compared with similar services elsewhere. Shares of MoneyGram International Inc. (NASDAQ:MGI) and Western Union Co. sank almost immediately after Thursday’s announcement. … Continue reading Financial Sector New Lows: Moneygram International (NASDAQ:MGI), Silver Bay Realty (NYSE:SBY), Square 1 Financial Inc (NASDAQ:SQBK), Starwood Waypoint Residential (NYSE:SWAY)