Viking Global Investors has not only survived the downturn in the venture capital business, but it’s thrived. VC fundraising is down, a growing number of private companies are raising new money at lower valuations than in earlier financing rounds, and just this past week, The Information reported that Tiger Global, which not long ago was making an average of one new investment per day, has given buyout packages to several employees responsible for fundraising.The troubles haven’t hit Viking...