Image source: Pixabay

The largest 7 stocks by market capitalization substantially outperformed the S&P 500 and the Dow Jones Industrial Average (DJIA) in 2020. The total market capitalization of these 6 technology stocks, plus Berkshire Hathaway, equals $8.75 trillion, about 27% of the total capitalization of the S&P 500 ($32 trillion). (Note: Tesla joined the S&P 500 on December 21.)

1. Apple (AAPL) ($2.27 trillion) — +80.8% YTD.
2. Microsoft (MSFT) ($1.68 trillion) — +41.0%.
3. Amazon (AMZN) ($1.62 trillion) — +76.3%.
4. Alphabet (GOOGL) ($1.20 trillion) — +30.9%.
5. Facebook (FB) (779 billion) — +33.1%.
6. Tesla (TSLA) ($658 billion) — +743%.
7. Berkshire Hathaway (BRK-A) ($544 billion) — +2.4%.

Additionally, here are more statistics.

• S&P 500 — +16.3% (18.4% dividends included).
• DJIA — +7.3%.
• Nasdaq — +43.6%.