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Here is a brief look at the 10 largest companies by market capitalization as of Saturday, Sept. 27, 2025. Additionally, I have included the percentages of their gains on a year-to-date basis. Let's dive into the numbers.

1. Nvidia (NVDA) has a market cap of around $4.335 trillion, with year-to-date gains of approximately +32.7%
2. Microsoft (MSFT) has a market cap of around $3.80 trillion, with year-to-date gains of approximately +21.3%
3. Apple (AAPL) has a market cap of around $3.79 trillion, with year-to-date gains of approximately +2.0%
4. Alphabet (GOOGL) has a market cap of around $2.99 trillion, with year-to-date gains of approximately +30.2%
5. Amazon (AMZN) has a market cap of around $2.34 trillion, with year-to-date gains of approximately +0.2%
6. Meta (META) has a market cap of around $1.87 trillion, with year-to-date gains of approximately +27.0%
7. Broadcom (AVGO) has a market cap of around $1.58 trillion, with year-to-date gains of approximately +44.3%
8. Tesla (TSLA) has a market cap of around $1.46 trillion, with year-to-date gains of approximately +9.1%
9. Taiwan Semiconductor Manufacturing (TSM) has a market cap of around $1.42 trillion, with year-to-date gains of approximately +38.4%
10. Berkshire Hathaway (BRK-A) has a market cap of around $1.08 trillion, with year-to-date gains of approximately +10.1%

In comparison, the S&P 500's year-to-date gain is approximately +13.0%.

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