Costco stock (COST) jumps on Mizuho upgrade, $1,000 target as December sales update looms
New York, January 5, 2026, 12:00 (EST) — Regular session Costco Wholesale Corp (COST.O) was up 2.2% at $873.54 in midday trading on Monday, after closing at $854.50 in the previous session. The move followed Mizuho’s upgrade of the warehouse-club retailer to Outperform from Neutral and a price-target increase to $1,000 from $950, with the firm adding Costco to its Top Picks list. “Shares have corrected ~20% on concerns that both membership and comp sales growth are slowing,” Mizuho analyst David Bellinger wrote. Streetinsider Those worries matter because comparable sales — revenue at stores open at least a year —