Investors have watched Palantir's valuation soar in recent years.Palantir Technologies (PLTR 11.72%) has been on a roll. Quarter after quarter, this tech company has reported soaring revenue and profit -- and has offered investors evidence of ongoing high demand. The company sells software systems that allow customers to easily harness the power of artificial intelligence (AI) to address their needs. With companies eager to get in on this promising technology, it's no surprise that they like what Palantir h ...