Image Source: Unsplash

Here is a brief look at the 10 largest companies by market capitalization as of Saturday, Sept. 20, 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 $4.29 trillion, with year-to-date gains of approximately +31.6%
2. Microsoft (MSFT) has a market cap of around $3.85 trillion, with year-to-date gains of approximately +22.9%
3. Apple (AAPL) has a market cap of around $3.64 trillion, with year-to-date gains of approximately -2.0%
4. Alphabet (GOOG) has a market cap of around $3.08 trillion, with year-to-date gains of approximately +34.6%
5. Amazon (AMZN) has a market cap of around $2.47 trillion, with year-to-date gains of approximately +5.5%
6. Meta (META) has a market cap of around $1.96 trillion, with year-to-date gains of approximately +32.9%
7. Broadcom (AVGO) has a market cap of around $1.63 trillion, with year-to-date gains of approximately +48.8%
8. Tesla (TSLA) has a market cap of around $1.42 trillion, with year-to-date gains of approximately +5.5%
9. Taiwan Semiconductor Manufacturing (TSM) has a market cap of around $1.37 trillion, with year-to-date gains of approximately +34.1%
10. Berkshire Hathaway (BRK-B) has a market cap of around $1.06 trillion, with year-to-date gains of approximately +8.7%

In comparison, the S&P 500's year-to-date gain is approximately +13.3%.

More By This Author: