No material news briefings were available for Costco Wholesale Corporation (COST) in the 30 days preceding this report's generation date of 2026-09-11. 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 - 2026-08-15].
Costco's trailing twelve-month revenue stood at $293.6 billion, representing year-over-year growth of 11.6%, while net income reached $8.8 billion over the same period [SEC 10-Q - COST - 2026-05-10]. Gross margin was recorded at 5.61% and operating margin at 3.82%, consistent with the company's warehouse club model of high volume and narrow spreads. Net margin came in at 3.01%. EPS grew 15.2% year-over-year. The balance sheet reflected $18.9 billion in cash against $5.7 billion in total debt. The stock traded at a price-to-earnings ratio of 45.39, with a market capitalisation of approximately $400.2 billion [SEC 10-Q - COST - 2026-05-10].
Three institutional managers disclosed material additions to their COST positions in recent 13F filings. Citadel, managed by Ken Griffin, increased its position by 23% [SEC 13F - Citadel - Q2 2026]. AQR Capital, managed by Cliff Asness, added 22% to its reported holding [SEC 13F - AQR Capital - Q2 2026]. Millennium Management, managed by Izzy Englander, recorded the largest proportional increase, adding 43% to its position [SEC 13F - Millennium - Q2 2026]. No insider transaction data was available for inclusion in this report.
The prevailing macroeconomic backdrop features a 10-year US Treasury yield of 4.83% and a 2-year yield of 4.39%, representing a normal yield curve configuration with a spread of 44 basis points [FRED DGS10] [FRED DGS2]. This rate environment forms part of the broader context in which institutional position adjustments occurred during the relevant reporting period.