Know Which Game You're Playing
Only take cues from investors whose time horizon matches your own
- Difficulty
- Moderate
- Time to result
- ~ongoing to results
- Steps
- 4
- Confidence
- 80%
Housel observes that investors are all in the same field bumping into each other while playing completely different games. A 22-year-old day trader and a 97-year-old widow are not asking the same question when they ask whether a stock is a good buy. The mechanism is a filter: once you know your own game, most information is simply irrelevant to it. A day trader may rightly care about this quarter's news; a 40-to-50-year investor should let it wash over him. The danger comes when you take cues from people playing a different game, such as selling because day traders sold your stock after earnings when you are a long-term holder. That is not a contradiction in views, just a difference in games. Filtering information by your own horizon, and refusing to treat all news as equally relevant, prevents a major source of investor confusion, mistakes and regret.
Origin
Extracted from Morgan Housel on Modern Wisdom, expressing an idea he later crystallised as the principle that no one is playing your exact game.
Core principles
- 01Investors play different games with different time horizons
- 02Information relevant to one game is noise for another
- 03Taking cues from players in a different game causes confusion, mistakes and regret
- 04A stock being a good buy depends entirely on who is asking
- 05One person's signal is another person's noise
How to run it
- 1
Define your game
State explicitly whether you are a day trader, a quarterly manager, or a multi-decade investor. Your time horizon is the game you are playing.
- 2
Filter information by relevance to that game
Judge every piece of news by whether it will actually change a decision on your horizon. For a 40-year investor, most short-term forecasting is simply not relevant.
Pro tip You don't have to call irrelevant information wrong, just irrelevant to you.
- 3
Ask what game others are playing
Before you copy someone's buy or sell, identify their horizon. A move that makes sense for a day trader may be exactly wrong for you.
Watch out Selling because others sold, without knowing their game, is a classic source of regret.
- 4
Refuse to treat all advice as universal
When someone asks if a stock is a good buy, insist on the question good for whom. Advice is only meaningful relative to a specific game.
In the wild
Housel points to financial TV asking whether a stock is a good buy. The right response is to ask for whom: a 22-year-old day trader or a 97-year-old widow? Treating them as the same investor produces meaningless advice, because the answer depends entirely on the game each is playing.
→ Reframing the question by horizon reveals that generic buy or sell advice is incoherent.
You own Google and it falls after earnings. You wonder if the sellers know something and consider selling too. But the sellers may be day traders for whom selling made sense, while you are a long-term investor for whom holding makes sense. That is not a disagreement about the company, just different games.
→ Recognising the sellers' different horizon stops you from making a costly reactive trade.
Common mistakes
Copying players in a different game
Reacting to trades made by people with a different time horizon leads to confusion, mistakes and regret about your own portfolio.
Treating all information as equally relevant
Assuming every piece of market news matters to you burns attention on noise that cannot change a decision on your horizon.
Is it for you?
Best for
Investors who want to filter market noise down to what actually matters for their horizon.
Not ideal for
Anyone who has not yet decided what their own time horizon or investing goal is.
From the transcript
“investors play different games we're not all playing the same game”
“one month signal is another man's noise”
From the episode
How To Create & Manage Your Personal Wealth - Morgan Housel - #142
Morgan Housel