Strategy, formerly known as MicroStrategy, plans to issue additional perpetual preferred stock in a bid to ease investor concerns over the volatility of its common shares, according to its chief executive officer. The announcement comes as Strategy’s stock, trading under the ticker MSTR, has fallen nearly 17% year to date. CEO Says Preferred Shares Could Become Major Funding Tool for Strategy  In a recent interview with Bloomberg, Strategy CEO Phong Le addressed Bitcoin’s price swings. He attributed its volatility to its digital characteristics