Why Doing Less Is a Strategy

What You Will Learn From This Article

• Munger’s case for what he bluntly called “sit on your ass” investing
• Buffett’s twenty-slot punch card thought experiment, and what it’s actually trying to teach
• Why constant activity so often gets mistaken for skill or progress
• A practical way to tell the difference between a genuine decision and an urge to simply do something

Activity feels like progress. Checking a portfolio, adjusting a position, reacting to news, all of it feels like doing something useful. Munger and Buffett both spent decades arguing, in different ways, that this feeling is frequently wrong, and that the real work of investing well is mostly about resisting it.

Munger’s Case for Patience

Munger’s own description of his approach was characteristically blunt: find a small number of good opportunities, then sit still. His often-repeated summary was that the big money isn’t in the buying or the selling, it’s in the waiting, a line he returned to across numerous Berkshire Hathaway shareholder meetings and interviews throughout his career.

The reasoning behind it wasn’t laziness dressed up as wisdom. Munger’s view was that genuinely excellent opportunities are rare, and that most of an investor’s time, by necessity, should be spent waiting for one to appear rather than manufacturing activity in between. Every unnecessary trade, in his framing, wasn’t neutral. It carried a real cost, transaction fees, tax consequences, and a fresh opportunity to simply be wrong, in exchange for very little expected benefit over simply doing nothing.

Buffett’s Twenty-Slot Punch Card

Buffett has used a specific thought experiment in business school talks to make a related point: imagine you’re handed a punch card at the start of your investing life with only twenty holes on it, one per investment decision, ever. Once all twenty are used, you’re finished investing for good.

Buffett wasn’t suggesting investors should literally cap themselves at twenty lifetime decisions, Berkshire itself has made far more investments than that over the decades. The exercise is meant to change how a decision feels in the moment. Treating every choice as though it consumes one of a genuinely limited supply forces a level of seriousness and selectivity that an unlimited, “I can always trade again tomorrow” mindset doesn’t.

The Same Argument From Two Directions

Munger’s advice addresses what to do while waiting, essentially nothing, and Buffett’s punch card addresses how to treat the moment a decision actually gets made, as though it genuinely matters and can’t be casually undone or repeated. Both are responses to the same underlying instinct: the belief that being active is the same thing as being effective.

That instinct is powerful because it’s reinforced constantly. Financial media rewards constant commentary and reaction. Trading platforms are built to make frequent activity effortless. A portfolio that hasn’t been touched in months can start to feel neglected, even when neglect is, in Munger and Buffett’s framing, frequently the correct approach.

Why Overtrading Costs More Than It Seems To

The cost of unnecessary trading rarely shows up as a single dramatic loss. It accumulates quietly: transaction costs on each trade, tax consequences from realising gains more often than necessary, and the simple statistical fact that more decisions mean more chances to be wrong, without a proportional increase in the number of chances to be right. An investor who trades frequently isn’t automatically wrong more often per decision, but they are, by definition, exposed to far more decisions, each one an opportunity to erode what patience would otherwise have preserved.

Telling a Real Decision From an Urge to Act

• Before making a trade, ask whether something has genuinely changed about the underlying investment’s value, or whether you’re reacting to price movement, news, or simply the discomfort of not doing anything
• Apply Buffett’s punch card mentally: would this decision still feel worth making if you only had a handful of decisions left for the rest of your investing life?
• Notice the specific feeling of restlessness that builds during quiet periods, and treat it as information about your own psychology rather than information about the market
• Keep a running count of your own trades over a year; a higher number than expected is itself a useful signal worth investigating

Key Takeaways

• Munger’s approach to patience was blunt: find a few good opportunities, then largely do nothing while waiting for the next one
• Buffett’s twenty-slot punch card is a thought experiment designed to make each investment decision feel appropriately scarce and serious, not a literal lifetime trading limit
• Both ideas argue against the same instinct, that constant activity equals progress, from two different angles: what to do while waiting, and how to treat the moment of action
• Unnecessary trading costs accumulate quietly through fees, taxes, and additional chances to be wrong, without a matching increase in the chances to be right

Frequently Asked Questions

Does this mean I should never check or adjust my portfolio?

No. Periodic review is reasonable and often necessary, particularly as goals or circumstances change. The distinction is between a deliberate, infrequent review process and reactive trading driven by daily price movements or a restless feeling that something must be done.

How many trades count as “too many”?

There’s no universal number, since it depends on your strategy and time horizon. The more useful test isn’t a specific count, it’s whether each individual trade was driven by a genuine change in your assessment of value, or by a general urge to be doing something.

Isn’t patience just another word for doing nothing, which sounds passive?

Munger and Buffett both distinguished patience from passivity. Patience, in their framing, is an active discipline, deliberately resisting the pull toward unnecessary action while remaining genuinely ready to act decisively when a real opportunity appears.

Did Buffett or Munger actually follow the twenty-slot punch card rule themselves?

Not literally, Berkshire Hathaway has made many more than twenty investments over its history. The punch card is a teaching device meant to instil a mindset of selectivity, not a literal operating constraint either man followed to the letter.

How do I resist the urge to trade during a volatile period?

Deciding your approach to a position in advance, before volatility hits, removes much of the pressure to decide anything in the moment. Munger and Buffett’s shared advice suggests that the decision to hold was often already the right one made earlier and calmly, rather than one that needs to be remade under emotional pressure.

This article was researched and drafted with the assistance of AI tools and reviewed for accuracy. It is general information, not personalised financial advice. Historical and biographical details were verified against publicly available sources at the time of writing, but please confirm any date or fact that matters to you independently before relying on it.