Warren Buffett holds $300.87 billion in U.S. government bonds through Berkshire Hathaway, accounting for 4.89% of the bond market. This scale exceeds the Federal Reserve's $195 billion holdings.

Berkshire's bond investments are divided into two parts: $14.4 billion in cash equivalents maturing within three months and $286.47 billion in short-term government bonds. The total holdings account for 90% of its $334 billion in cash.

Buffett chooses government bonds because current stock market valuations are too high, while government bond yields are at 4.359%, providing a safe and substantial return. He has not made significant acquisitions for two years, waiting for market opportunities.

In contrast, Apple only holds $15.5 billion in government bonds, far below Berkshire's scale.

Analysts point out that Berkshire's size is too large, and small-scale transactions are unlikely to have an impact. Potential targets like privatizing Coca-Cola ($280 billion) or American Express ($130 billion) would still not exhaust its funds.

Buffett is waiting for a "lucrative opportunity," similar to the bailout deals during the 2008 crisis, but now requires a larger scale to make an impact on the market. Currently, he chooses to let government bond yields provide returns while patiently waiting.