Largest Companies by Market Cap - September 2026
Swipe or scroll the table sideways for more columns.
What changed in this ranking
AI-generated summary by Rhea-AI, written on . How Rhea-AI works.
In the closed ranking dated
Semiconductor companies were prominent among the climbers: Marvell Technology, Inc. (MRVL), Analog Devices, Inc. (ADI) and Applied Materials, Inc. (AMAT) all climbed, gaining 22, 17 and 6 places, respectively. MRVL now ranks 65, up from rank 87. ADI now ranks 78, up from rank 95. Qualcomm Inc (QCOM) gained 13 places to rank 76, while CrowdStrike Holdings (CRWD), Seagate Technology Holdings plc (STX) and Eaton Corporation plc (ETN) each gained 12. The steepest fallers were Novo Nordisk A/S (NVO), down 18 places, and McDonald's Corporation (MCD), down 14; RTX Corporation (RTX) and Wells Fargo & Co. (WFC) each fell 12. NVO is now at rank 92, versus rank 74 previously. MCD is at rank 99, compared with rank 85.
The top-ten order changed as Meta Platforms, Inc. (META) overtook Broadcom Inc. (AVGO). META now holds rank 8. AVGO is at rank 9.
Compares this month's close with the previous month's close. A company that shifted only because another entered or left the ranking above it is not counted as having moved.
About this ranking
This page ranks 941 US-listed companies by the market capitalization each one carried at the close of September 2026. The values do not change, because September 2026 is over; this is what the ranking looked like then, and it will look the same the next time you visit.
Market capitalization is the share price multiplied by the number of shares outstanding. Each figure on this page uses that month's closing share price, so the ranking reflects the market as it stood at the close of September 2026 rather than today. Rank Change compares each company's position with its position at the end of the previous month. A company whose position shifted only because another company entered or left the ranking above it shows no change, because it did not move.
For the ranking at today's prices, see the live market cap ranking.