Prepared by A-J | Author brand: 盡職生活｜阿J的普通人理財筆記
About the author/site · Vocus @WUCJ ↗ · Editorial policy
Page version: 2026-08-15 | Official or primary sources are preferred for material rules and figures. AI may assist structure, translation, and code, but is not used as the sole factual source.
About the author/site · Vocus @WUCJ ↗ · Editorial policy
Page version: 2026-08-15 | Official or primary sources are preferred for material rules and figures. AI may assist structure, translation, and code, but is not used as the sole factual source.
Key point: Remember: individual stocks can lose principal. This page provides education and a research framework only, not stock picks or entry/exit signals.
More stocks do not automatically mean diversification
If holdings are concentrated in one industry or economic cycle, the same event can still hurt them at the same time.
Diversify risk drivers
Industry, company size, geography, business model, and asset class can all affect whether the portfolio is genuinely diversified.
Diversification cannot eliminate market risk
Broad market declines can pressure many stocks at once. Diversification mainly reduces excessive exposure to company-specific or concentrated risks.
Think at the portfolio level
Before adding a stock, ask what role it plays in the overall portfolio—not only whether the share price might rise.
How to verify information
Start with company filings, exchange/regulatory sources, and primary disclosures before relying on media summaries or market commentary. When sources conflict, prioritize formal filings and primary sources.
General investing education only. Not a recommendation, trading instruction, or promise of returns.