 As investors get ready for Halloween, five broadly held guru stocks that tumbled more than 10 during October are Meta Platforms Inc. META , Financial, Amazon.com Inc. AMZN , Financial, Alibaba Group Holding Ltd. BABA , Financial, Edwards Lifesciences Corp. EW , Financial and SVB Financial Group SIVB , Financial according to the All-in-One Screener, a Premium feature of GuruFocus. 