Ring Energy, Inc. (NYSEAMERICAN:REI) is among the hidden penny stocks to buy now. During the first quarter, Goldman Sachs Group Inc. trimmed its holdings in Ring Energy, Inc. (NYSEAMERICAN:REI) by 33.5% through the sale of 394,814 shares. According to a recent filing with the SEC, the bank now owns 783,618 shares of the company’s stock, which translates to an investment of $901,000 and an ownership of about 0.38%. One thing that has kept the investor’s interest is the company’s strategy to reduce its debt ...