Is the recent sell-off a buying opportunity?Alphabet (GOOG 1.65%) (GOOGL 1.63%) has fallen significantly from its previous peak in recent months as concerns about new competition in search, overspending on artificial intelligence (AI) infrastructure, and the broader health of the economy have pressured the stock lower. The stock is now down 22% from its peak in July.Some see a buying opportunity in that sell-off, and one Wall Street analyst recently weighed on with coverage on the stock. DA Davidson sees up ...