(This April 26 story corrects transposed performance data in sixth paragraph): BOSTON (Reuters) - Borealis Strategic Capital Partners, which invests in new hedge funds, has written its first check to commit capital to Europe-oriented stock fund Vor Capital, two people familiar with the matter said on Friday. Vor Capital launched a year ago with a plan to invest in mid-sized European internet companies. It is run by Brant Rubin, who previously worked for hedge fund Luxor Capital.