Investors can easily find reasons to remain bullish on this stock, even though it has more than tripled in the past 12 months.SoFi Technologies (SOFI -1.96%) hasn't had a long run in the public markets. But it's definitely getting the attention of the market. While shares have been extremely volatile at certain times, they have boosted portfolio returns. In the past year, they have skyrocketed an astonishing 235% (as of Aug. 28).This fintech stock trades near its all-time high these days. Investors can no l ...