No material news briefings were available for Costco Wholesale Corporation (COST) in the 30 days preceding this report's generation date of 2026-09-27. 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 - 2026-09-19] [Brief - 2026-09-11].
As of the most recent quarterly filing, Costco reported trailing twelve-month revenue of $293.6 billion, reflecting year-over-year growth of 11.6%. Net income on a TTM basis stood at $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 15.2% year-over-year. The company held $18.95 billion in cash against total debt of $5.71 billion. The market capitalisation was approximately $409.3 billion, with a price-to-earnings ratio of 46.42 [SEC 10-Q - COST - 2026-05-10].
Insider activity in September 2026 comprised 14 transactions with a mixed net direction and a net aggregate value of zero, indicating no pronounced directional signal from insiders during the period [SEC Form 4 - COST - 2026-09]. On the institutional side, Citadel added approximately 23% to its COST position, AQR Capital added approximately 22%, and Millennium added approximately 43% to its position, each representing material changes relative to prior reported holdings [SEC 13F - Citadel - Q2 2026] [SEC 13F - AQR Capital - Q2 2026] [SEC 13F - Millennium - Q2 2026].
The prevailing macro environment features a 10-year US Treasury yield of 5.18% and a 2-year yield of 4.87%, producing a normal yield curve spread of 31 basis points [FRED DGS10] [FRED DGS2]. These rate levels represent the broader fixed-income backdrop against which equity valuations, including COST's current P/E of 46.42, are contextualised by market participants.