Largest Companies by Market Cap - May 2026
How these values were calculated
- Reconstructed, not recorded
- The share counts in force at the close of May 2026 were not recorded at the time. Each value marked est. is that month's closing price multiplied by the share count on record today, so a buyback or an issuance since then moves it. The closing prices are exact; the share counts are today's.
- What that changes
- Ranks near each other can swap, and a company whose share count changed sharply since May 2026 carries the largest error. Months recorded while their inputs were current carry no marker.
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.
CrowdStrike Holdings (CRWD) climbed 59 places to rank 76 from rank 135. Dell Technologies Inc. (DELL) gained 58 places to rank 48 from rank 106, while Palo Alto Networks, Inc. (PANW) rose 39 places to rank 59 from rank 98. Arm Holdings (ARM) also advanced 27 places to rank 27 from rank 54.
Computer Storage Devices was a shared bright spot: Sandisk Corporation (SNDK), Seagate Technology Holdings plc (STX) and Western Digital Corp. (WDC) all climbed, gaining 31, 23 and 19 places, respectively. Applovin Corporation (APP) gained 31 places to rank 65 from rank 96, while Qualcomm Inc (QCOM) rose 20 places to rank 49 from rank 69.
Inside the top 10, Tesla, Inc. (TSLA) overtook Meta Platforms, Inc. (META). TSLA now holds No. 8. Micron Technology, Inc. (MU) overtook Walmart Inc. (WMT). MU now holds No. 10.
NextEra Energy, Inc. (NEE) fell 20 places to rank 83 from rank 63. PepsiCo, Inc. (PEP), Deere & Company (DE) and ConocoPhillips (COP) each fell 15 places. Eaton Corporation plc (ETN) slipped 14 places, while Intuitive Surgical Inc. (ISRG) declined 13.
BNY Mellon (BNY) joined at rank 160. Cerebras Systems (CBRS) joined at rank 301. Wise Group plc (WSE) joined at rank 777. Bank of New York Mellon Corporation (BK) left after holding rank 173 at the close of April 2026. Coterra Energy Inc. (CTRA) left after being ranked No. 484. Carnival PLC (CUK) left from No. 943 at the universe boundary.
Both the close of May 2026 and the close of April 2026 were reconstructed, so this comparison uses rebuilt rankings.
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 942 US-listed companies by the market capitalization each one carried at the close of May 2026. The values do not change, because May 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 May 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.
This month was reconstructed: the closing prices are the ones recorded for May 2026, but the share counts are today's, so every value marked est. carries the share-count drift since then.
For the ranking at today's prices, see the live market cap ranking.