One of the most expensive mistakes in the market is confusing high conviction with excessive risk.
Even the best companies can experience massive drawdowns. Position sizing can make or break your portfolio.
You can identify a great company, have a strong thesis, and even nail the technical setup — but poor position sizing can still destroy your portfolio.
Here's the math every trader should understand:
• 10% position falling 30% costs your portfolio 3%
• 25% position falling 30% costs your portfolio 7.5%
• 50% position falling 30% costs your portfolio 15%
Same stock. Same decline. Completely different consequences.
A few lessons I've learned over the years:
• Never let conviction turn into overconfidence. Even your highest-conviction ideas can fail.
• Size positions based on risk, not excitement. Smaller, more volatile companies generally deserve smaller allocations.
• Protect your ability to stay in the game. A 50% portfolio drawdown requires a 100% gain just to recover.
Remember: the goal isn't to make the most money from a single stock. The goal is to compound your capital consistently over many years without allowing one mistake to wipe out years of hard work.
You don't need to be right on every trade to become successful. But you absolutely need to survive the times when you're wrong.
Position sizing is what keeps you in the game.
Even the best companies can experience massive drawdowns. Position sizing can make or break your portfolio.
You can identify a great company, have a strong thesis, and even nail the technical setup — but poor position sizing can still destroy your portfolio.
Here's the math every trader should understand:
• 10% position falling 30% costs your portfolio 3%
• 25% position falling 30% costs your portfolio 7.5%
• 50% position falling 30% costs your portfolio 15%
Same stock. Same decline. Completely different consequences.
A few lessons I've learned over the years:
• Never let conviction turn into overconfidence. Even your highest-conviction ideas can fail.
• Size positions based on risk, not excitement. Smaller, more volatile companies generally deserve smaller allocations.
• Protect your ability to stay in the game. A 50% portfolio drawdown requires a 100% gain just to recover.
Remember: the goal isn't to make the most money from a single stock. The goal is to compound your capital consistently over many years without allowing one mistake to wipe out years of hard work.
You don't need to be right on every trade to become successful. But you absolutely need to survive the times when you're wrong.
Position sizing is what keeps you in the game.