Don’t put all your money into one stock, one platform, or one property
Original: eternity4719 · source details
Original author: eternity4719 · Chinese source: · English adaptation: parveen0029. Translation and grade notes ↗
Bibliographic titles are retained in their original language.
Source author's views and grades; not individually verified by this site.
Cost and benefit at a glance
- Check the cost Cost ↓
- No cost at all. The hard part is accepting that you won’t always pick the single most profitable option.
- Then the source benefit Benefit ↓
- When several assets do not move in perfect lockstep, diversifying your investments maintains your expected returns while lowering overall volatility. This is the core conclusion of…
In plain terms
As long as multiple assets don’t all rise or fall in perfect unison, spreading your money across them keeps your average expected returns the same, while reducing the ups and downs of your account balance. Conversely, if you invest all your funds in just one stock, platform, or property, any trouble with it directly impacts your entire portfolio.
This guide's cartoon · show illustration
Enlarge illustrationOriginal illustration with Chinese lettering; the English dialogue is below. Humour is a reading aid, not evidence.
English dialogue
- Hang on. I never agreed to renew!
Cost: what it takes
No cost at all. The hard part is accepting that you won’t always pick the single most profitable option.
Benefit: what the source reports
When several assets do not move in perfect lockstep, diversifying your investments maintains your expected returns while lowering overall volatility. This is the core conclusion of Markowitz’s 1952 portfolio theory, which has remained foundational for decades. On the other hand, putting all your money into one single stock or platform means its variance becomes your total portfolio variance — any rise or fall in its value directly affects your portfolio, with no other assets to offset losses when problems arise.
Conditions, limits and disagreements
This is rated as a B grade because the original academic paper relies purely on mathematical derivation, without providing concrete figures on exactly how much diversification reduces potential losses. Diversification can only lessen the fluctuations of your portfolio balance, it does not guarantee you won’t suffer any losses. Buying broad-based index funds (see item 17 in this section) is the easiest way to achieve effective diversification. This information is not intended as investment advice.
Original references
Original bibliographic titles and links are preserved; some titles are in Chinese.
Markowitz, H. (1952). Portfolio Selection. The Journal of Finance, 7(1), 77–91. https://doi.org/10.1111/j.1540-6261.1952.tb01525.x
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