Key TakeawaysMicroStrategy shares surged again Wednesday, lifted by bitcoin's recent record-high.The technology company is the largest corporate holder of bitcoin, with about $31 billion worth in its portfolio.MicroStrategy stock is up nearly 700% this year, even outperforming bitcoin itself. MicroStrategy (MSTR) shares rocketed higher again Wednesday, as the largest corporate holder of bitcoin reaps the benefits of record high prices for the cryptocurrency.  The price of bitcoin hit a record of more than $ ...