Home-country bias is a universal investment trap where investors disproportionately allocate their portfolios to domestic equities, with American investors holding over 85% in US stocks, Germans around 60% in DAX, Japanese about 70% in TOPIX, and Thai investors approximately 90% in SET; this concentration creates hidden risk because even diversified index funds like the S&P 500 are heavily concentrated in just seven stocks, meaning an 85% US allocation actually exposes investors to roughly 38% of their portfolio in just seven companies.
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The 85% Home-Country Bias Trap #shortsAjouté :
Most American investors hold over 85% of their stock allocation in US equities.
The exact same trap shows up in Germany, Japan, and Thailand.
Different country, same arithmetic.
The Investment Company Institute and Vanguard data put the average US retail investor at roughly 85% or higher in US equities.
In Frankfurt, Bundesbank household asset surveys put the average German investor at roughly 60% in the DAX, Germany's main 30-company index.
In Tokyo, Bank of Japan surveys put the average Japanese investor at roughly 70% in TOPIX.
In Bangkok, the average Thai retail investor holds roughly 90% in the Stock Exchange of Thailand.
Different language, same trap.
And here is what it really means.
If you are American with 85% in an S&P fund, which is itself 45% in seven stocks, your real exposure to those seven companies is roughly 38% of your entire stock book.
Seven companies, 38%.
Comment your home country percent if you know it.
We will tell you whether the math is okay or whether it is the trap.
Build wealth with patience, not panic.
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