Largest Companies by Market Cap - Complete Rankings

Technology was the central story in the market-capitalization ranking. Seagate Technology Holdings plc (STX) fell 40 places, moving from rank 71 to rank 111. Nine Technology companies fell, including STX, Sandisk Corporation (SNDK), Western Digital Corp. (WDC), Arm Holdings (ARM), KLA Corporation (KLAC), Lam Research Corp (LRCX), Arista Networks (ANET), Amphenol Corporation (APH) and Applied Materials, Inc. (AMAT).

Five Technology companies rose: ServiceNow, Inc. (NOW), SAP SE (SAP), Salesforce, Inc. (CRM), International Business Machines Corporation (IBM) and Shopify Inc. (SHOP). Outside Technology, Eaton Corporation plc (ETN) and Southern Copper Corporation (SCCO) also fell. ConocoPhillips (COP) rose 15 places to rank 90 from rank 105, while Blackrock, Inc. (BLK) and Anheuser-Busch InBev SA/NV (BUD) also rose.

Vylor Inc. (VYLR) debuted at rank 333. Skydance Corporation (SKYD) debuted at rank 392. Other newcomers were universe-boundary cases rather than debuts. Warner Bros. Discovery, Inc. Series A (WBD) departed after holding rank 212 in the previous ranking. Other departures included Vicor Corp (VICR), TTM Technologies Inc (TTMI), FormFactor Inc. (FORM) and Paramount Skydance Corporation (PSKY).

The top 10 order itself was unchanged. This comparison uses the current board as a live snapshot against the month-end snapshot at the close of September 2026.