By Bret Kenwell SoFi Technologies is rallying on its earnings report, but does that make it a buy? Shares of SoFi Technologies (SOFI) – Get SoFi Technologies Inc Report were jumping in Tuesday’s after-hours session, up about 23%. Recently, though, SoFi stock traded up around 6%. The Wednesday move comes after the San Francisco financial-services provider posted better-than-expected earnings on Tuesday after the close. The fade shouldn’t be asurprise. First, particularly for growth stocks these days, the default reaction — even for good reports — has been to sell the news. Second, the stock o…