The S&P 500 is hovering around its all-time high as we head into March, but that doesn't mean that all stocks have become expensive. There are some excellent opportunities for risk-tolerant long-term investors, especially in the financial technology, or fintech, industry. Here are two companies, in particular, that look like incredible buys as winter comes to a close.A true disruptor with strong resultsLemonade (LMND 4.19%) is an insurance company that aims to disrupt the traditional model by using technolo ...