Atlanticus Holdings Corporation (ATLC) shares soared 5.5% in the last trading session to close at $76.15. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 17.6% gain over the past four weeks.Atlanticus stock witnessed a price rise, which might be the result of B. Riley’s move of increasing the target price of the stock. Recently, ATLC purchased Mercury Financial LLC, a leading tech-driven credit card platform serving near-prime co ...