Berkshire holds over $350 billion in cash and T-bills, and recently bought $17 billion of T-bills, making them the largest owner. T-bills provide safety, liquidity, and preparedness for market downturns or investment opportunities, aligning with Buffett's strategy of always having cash ready for crises or attractive deals. LONG because he's actively accumulating T-bills as a core asset, emphasizing their role in risk management and capital preservation over other short-term instruments. Inflation reduces real returns, but Buffett prioritizes security and liquidity in uncertain times.