b'Ping Identity (PING) stock price is up over 19% year-to-date. The company serves around 60% of Fortune 100 companies and large U.S. Banks. Also, Carparts.Com (PRTS) stock price is down over 42% year-to-date. However, it has a 15% increase year-to-year revenue and an attractive valuation. Robert Conzo weighs in on the small-cap universe.'