Costco Wholesale stock heads into the open after a 0.8% drop

At the close on September 16, 2026, Costco Wholesale stock finished at USD 893.74 on the Nasdaq, down 0.8% on the day, underperforming the broader market as the Dow Jones Industrial Average fell 1.21%. Today, investors watch Costco Wholesale stock ahead of its September 24, 2026 earnings release.

Costco Wholesale stock closed at USD 893.74 on the Nasdaq on September 16, 2026, down 0.8% from the prior session.

September 16, 2026 in numbers

Costco Wholesale Corp. (ISIN US22160K1051, Nasdaq: COST) ended the September 16, 2026 session at USD 893.74, slipping 0.8% as the Dow Jones Industrial Average fell 1.21% and the broader market weakened after a Federal Reserve rate hike. According to data cited in a Japanese market wrap, Costco Wholesale shares traded lower by USD 7.61 on the day, reflecting the 0.84% move that brought the closing level to USD 893.74, while consumer staples peers such as Walmart also declined in the same session, highlighting sector-wide pressure.

As Zacks reported on September 16, 2026, Costco Wholesale carried a confirmed next earnings release date of September 24, 2026, with the site listing a contemporaneous quote around USD 899.95 and a modest intraday decline of 0.16%, underscoring that the stock traded slightly softer into the close. A separate market commentary from The Motley Fool on September 16, 2026 highlighted Costco Wholesale as a favored defensive holding, noting a current price quote of USD 893.74 and a day change of minus USD 7.61, which matches the reported closing level and daily decline.

Earnings and macro backdrop today

Looking ahead, the key company-specific catalyst for Costco Wholesale today is its approaching fiscal quarterly earnings release scheduled for September 24, 2026, which Zacks confirms will be reported after the close of trading. As Finimize noted on September 16, 2026, Oppenheimer has cautioned that the prevailing earnings-per-share consensus of around USD 6.55 for the upcoming quarter may be optimistic once one-off tariff refunds are stripped out, raising questions about Costco Wholesale’s margin mix heading into results. In parallel, the broader market context remains important for Costco Wholesale today, as The Straits Times reported that major US indices, including the Dow Jones Industrial Average, closed sharply lower after the Federal Reserve raised interest rates and signaled further tightening, a backdrop that can influence sentiment toward large consumer staples names such as Costco Wholesale today.