Key PointsPeter Thiel fully exited his position in AI's poster-child.Thiel warns of an AI hype bubble, likening it to 1999's excessive optimism.His fund now holds only a few diversified tech giants.Billionaire Peter Thiel’s latest 13F didn’t show off a mere trim, but a full-blown exit from AI bellwether Nvidia (NVDA). It comes at a surprising point when Wall Street’s been busy declaring the chipmaker as virtually untouchable. Although Nvidia recently surpassed a $5 trillion valuation, Thiel walk...