Everyone talks about Buffett buying stocks. But the most instructive thing he has done recently is hold cash and exactly how he holds it teaches a lesson most investors miss entirely.
Warren Buffett is worth studying not just for what he buys, but for what he does when he chooses not to buy anything at all.
Right now, that patience is on full display. Berkshire Hathaway ended 2025 holding $373.3 billion in cash and cash equivalents, according to the company’s Q4 2025 10-K filing. That number is not a mistake or an accident. It is a deliberate decision and it tells you a great deal about how Buffett thinks about money, risk, and opportunity.
| $373B
Cash held at end of 2025 |
90%
Of reserves held in T-bills |
5%
Of entire T-bill market owned |
Cash is not laziness. It is ammunition.
A lot of investors look at Buffett’s cash pile and assume he has no ideas. That reading is wrong. Buffett has always viewed cash as a strategic weapon not something you hold because you are confused, but something you hold because the market has not offered you a good enough deal yet.
He said it himself at Berkshire’s annual shareholder meeting: “I don’t think anybody sitting at this table has any idea of how to use it effectively, and therefore we don’t use it. We only swing at pitches we like.”
That sentence alone is worth reading twice. It is the discipline most retail investors never develop. When markets are euphoric and valuations are stretched, doing nothing is actually doing something. It is protecting your capital until a better opportunity arrives.
“Berkshire will never prefer ownership of cash-equivalent assets over the ownership of good businesses.”
Warren Buffett, Shareholder Letter, via CNBC
This matters because Buffett is not saying cash is better than stocks. He is saying that bad stocks are worse than cash. There is a difference and understanding that difference is what separates a disciplined investor from one who buys just to feel like they are doing something.
Where the cash actually lives
Here is what surprises most people: Buffett does not just leave billions sitting in a bank account. He puts it to work in the safest instrument available U.S. Treasury bills.
Buffett stated in a CNBC interview: “Berkshire bought $10 billion in U.S. Treasuries last Monday. We bought $10 billion in Treasuries this Monday. And the only question for next Monday is whether we will buy $10 billion in 3-month or 6-months.”
That is a consistent, mechanical discipline. He buys T-bills at weekly government auctions in large, regular increments. The result? According to estimates from JPMorgan, Berkshire now owns roughly 5% of the total Treasury bill market amounting to about $314 billion as of the end of March 2025.
What is a T-bill? A Treasury bill is a short-term U.S. government security, sold with maturities from 4 weeks to 52 weeks. It is backed by the full faith and credit of the U.S. government making it the closest thing to a risk-free investment that exists.
Why T-bills specifically and not something else?
Buffett is not earning dramatic returns on T-bills. That is not the point. The point is safety, liquidity, and earning something while you wait.
What Buffett’s strategy demonstrates is that T-bills are the ultimate starting point for safety and liquidity. By holding bills directly, Buffett ensures he only faces the custodian of the government securities with as few intermediaries as possible.
Compare that to a money market fund, which may involve repo facilities, counterparty risks, and bank balance sheet exposure. Buffett strips all of that out. He wants the cleanest, most liquid instrument possible one he can convert into stock positions almost immediately when the right deal arrives.
T-bills offer a risk-free return that Buffett finds appealing compared to elevated valuations in equity markets. With approximate yields on three-month T-bills, Berkshire’s holdings could yield about $12 billion annually, a risk-free income stream that provides a stable financial foundation.
Think about that for a moment. He is earning roughly $12 billion a year doing nothing except waiting. That is not a bad outcome for patience.
The valuation signal hidden in plain sight
When Buffett builds cash, it is also a signal. He is telling you, indirectly, that he does not see enough value in the market to justify putting money to work right now.
Between 2022 and 2024, Berkshire sold a net $172.93 billion in equities while buying relatively little in return. In 2024 alone, the company sold a net $134.1 billion in stocks at a pace of liquidation that few investors grasped in real time. This was not panic selling, but a deliberate, sustained exit from positions Buffett believed had reached or exceeded fair value.
He trimmed his Apple stake significantly. He reduced Bank of America. He was not running from the market out of fear. He was locking in profits at prices he considered full or even stretched and building the reserves to act decisively when those prices corrected.
- Sell when things look expensive. Not because they will crash tomorrow, but because the upside is limited.
- Park cash in safe, liquid instruments that still generate income while you wait.
- Do not rush to redeploy. The right opportunity will come and when it does, you want dry powder ready.
- Holding cash is a position. It is not indecision. I am convinced that better prices are ahead.
What this means for you as an investor
Now, you are not Berkshire Hathaway. You do not have $373 billion to deploy. But the underlying logic scales perfectly to an individual investor and that is the lesson worth taking seriously.
Most people feel pressure to be fully invested at all times. They worry about missing out on the next rally. That fear drives them to buy stocks at prices Buffett would walk away from. And then they wonder why their returns disappoint over time.
Buffett’s approach is the opposite. He sets a valuation threshold, a price at which he believes the business is genuinely cheap relative to its long-term earning power. If the market does not offer that price, he does not buy. He waits. He holds T-bills. He collects his income. And he stays ready.
Cash reserves during expensive markets preserve your ability to buy when prices become genuinely attractive and fear dominates sentiment.
The Street, March 2026
You can apply this principle today with a straightforward approach. Keep an investment account earmarked for opportunities. Inside it, park your waiting cash in short-term T-bill ETFs tickers like SGOV or BIL which offer government-backed safety, daily liquidity, and yields above 4%. SGOV tracks an index of Treasury bonds maturing in zero to three months, with a low expense ratio of 0.09%, offering a reliable income stream backed by the U.S. government’s full faith and credit.
When the market corrects and it always does eventually you have cash ready to move quickly. You are not scrambling to sell something else to fund a buy. You are already positioned.
The discipline most investors never learn
There is a psychological reason why Buffett’s strategy is so hard to follow. Holding cash feels like losing when markets are climbing. Every day you sit on T-bills instead of stocks, you see other people reporting gains. That sting is real.
But Buffett has trained himself to invert that feeling. He does not envy investors who bought expensive stocks. He pities them because he knows what eventually happens to money deployed at the wrong price.
The goal is not to be fully invested. The goal is to be right. And being right sometimes means doing nothing at all, collecting your safe 4% on T-bills and waiting for the market to come to you.
That patience, compounded over decades, is how Berkshire Hathaway became one of the most valuable companies ever built. Not through frenetic trading. Not through chasing trends. Through knowing exactly when to act and being fully prepared when that moment arrived.
Now you know what Buffett does with his cash. The real question is whether you have the patience to do the same.
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