High valuations or uncertain business conditions will likely weigh on these stocks over the next year.Since the end of the 2022 bear market, several artificial intelligence (AI) stocks have delivered massive returns for investors as they transform the technology landscape. Not surprisingly, one of the top stocks in this category is Nvidia, which delivered returns of over 1,640% since its low in mid-October 2022.Unfortunately, such success has not made every AI stock an automatic buy. In fact, given the stat ...