Palantir may look like it's on track for $1 trillion, but it will need to keep topping expectations every quarter.A market cap of$1 trillion, while more common than it used to be, is still a major milestone. Only the 11 most valuable companies in the world have accomplished it so far.At its current value, Palantir Technologies (PLTR +1.09%), an artificial intelligence (AI) data analytics company, doesn't look like it will join the trillion-dollar club in the near future. It's worth $410 billion (as of this ...