No material news briefings were available for Costco Wholesale Corporation (COST) in the 30 days preceding this report's generation date of 2026-10-05. The principal driver of this report is a set of material institutional position changes identified in recent 13F filings, as detailed in the holdings section below [Brief - 2026-09-27].
Costco's trailing twelve-month revenue stood at $293.59 billion as of the most recent filing, reflecting year-over-year revenue growth of 11.58%. Net income for the same period was $8.84 billion, with a net margin of 3.01% and an operating margin of 3.82%. Gross margin was recorded at 5.61%. EPS grew 15.19% year-over-year. The company held $18.95 billion in cash against total debt of $5.71 billion. The stock traded at a price-to-earnings ratio of 46.31, with a market capitalisation of approximately $408.32 billion [SEC 10-Q - COST - 2026-05-10].
Insider activity over the past 30 days comprised 16 transactions with a net direction of selling, totalling a net disposal value of approximately $2.75 million [SEC Form 4 - COST - 2026-10]. On the institutional side, three notable position increases were recorded in recent 13F filings: Citadel added approximately 23% to its existing position, AQR Capital added approximately 22%, and Millennium added approximately 43% to its position [SEC 13F - Citadel - Q3 2026] [SEC 13F - AQR Capital - Q3 2026] [SEC 13F - Millennium - Q3 2026].
The prevailing macro environment shows the 10-year US Treasury yield at 5.24% and the 2-year yield at 4.78%, producing a normal yield curve with a spread of 46 basis points between the two tenors [FRED DGS10] [FRED DGS2]. These rate levels represent the broader fixed-income backdrop against which equity valuations, including Costco's current P/E of 46.31, are contextualised.