Costco continues eight straight sessions of losses

Costco shares fell for eight consecutive sessions, closing at $902.45, despite a 9.9% net sales increase in August. The stock is down nearly 5% over the past month and underperformed the S&P 500 year-to-date. Seeking Alpha rates COST as a Hold with an F valuation score, though analysts note strong profitability. Wall Street sentiment is mixed, with 24 Buy ratings against 13 Holds and two Sells.