Largest Companies by Market Cap - Complete Rankings

The current board is live and is compared with the month-end snapshot at the close of September 2026. The sharpest decline was Seagate Technology Holdings plc (STX), which fell 36 places from rank 71 to rank 107. Western Digital Corp. (WDC) fell 22 places from rank 98 to rank 120, while Sandisk Corporation (SNDK) fell 20 places from rank 57 to rank 77. Arm Holdings (ARM) fell 19 places from rank 43 to rank 62. The downturn also reached CrowdStrike Holdings (CRWD), KLA Corporation (KLAC) and Arista Networks (ANET).

The strongest rise came from ConocoPhillips (COP), which climbed 17 places from rank 105 to rank 88. SAP SE (SAP) rose 12 places from rank 64 to rank 52, and Shopify Inc. (SHOP) rose 11 places from rank 79 to rank 68. Technology also had 3 upward movers: SAP, SHOP and Salesforce, Inc. (CRM). Healthcare had 3 upward movers: Pfizer Inc. (PFE), UnitedHealth Group Incorporated (UNH) and AstraZeneca PLC (AZN).

Vylor Inc. (VYLR) debuted at rank 332, while Skydance Corporation (SKYD) debuted at rank 415. Additional names appeared near the lower boundary, including Vaxcyte, Inc. (PCVX), Companhia Paranaense de Energia - COPEL (ELPC) and Oscar Health, Inc. (OSCR). Warner Bros. Discovery, Inc. Series A (WBD) left from rank 212. Other departures included FormFactor Inc. (FORM), Paramount Skydance Corporation (PSKY), Hut 8 Corp. (HUT), Viavi Solutions Inc. (VIAV), Qorvo, Inc. (QRVO), Bruker Corporation (BRKR), Viasat Inc (VSAT) and MaxLinear, Inc. (MXL). There were no order changes inside the top 10.