How Much of Your Portfolio Should Be in One Stock?
There is no single safe percentage. Use the Zero Test: what losing the whole position would cost you. With the arithmetic for 5%, 10%, 20% and 50%.
Entries by Spencer Li
What Is Bitcoin? How It Works, Who Controls It, and What Can Go Wrong
What Bitcoin is, how a transaction works, why only 21 million will exist, who controls the network, and the 4 risks to understand before you hold any.
Robo-Adviser or DIY? What the Yearly Fee Actually Buys You
A robo-adviser costs more each year than a DIY ETF portfolio. Whether that is worth it depends on one thing: what you do in a crash. The numbers inside.
The Law of Large Numbers in Trading: How Many Trades Before You Judge a Strategy?
Why 20 trades tell you almost nothing, and why 100 to 200 is the minimum before you judge a strategy. Exact odds, worked out, plus how edge size changes the answer.
The Cheapest Way to Dollar-Cost Average from Singapore: Which Fee Hurts Most
A fee charged on each buy and a fee charged on everything you hold behave very differently over 20 years. How to compare monthly investing plans in Singapore.