Is Wall Street's biggest Palantir bear right about the stock?Wall Street analysts tend to be a decidedly optimistic bunch. Of the 503 stocks in the S&P 500 (^GSPC -0.43%) (there are more than 500 because some companies have multiple share classes), analysts rate 409 as buys or strong buys. As you might imagine, the artificial intelligence (AI) stocks that have propelled the market higher in recent years are among Wall Street's favorites. However, this bullishness has its limits. There's an especially popula ...