A lousy economy doesn’t necessarily mean a weak stock market. While major benchmark indexes in Europe, the U.S. and Hong Kong peck out single-digit year-to-date gains, the Moscow Stock Exchange’s benchmark Micex index has climbed nearly 19%. The Market Vectors Russia (RSX) exchange traded fund has posted an even, strong gain, up 29% year-to-date. It has rebounded off a five-year low after diving about 50% last year.