Through the first nine months of 2026 the S&P 500 gained 13.4% while the CSI 300 lost 9.8%, a 23-point gap the author uses to renew his case for abandoning Chinese stocks.

The author is a software engineer in Silicon Valley who has been writing about money for over twenty years. This year he has been watching one number: the S&P 500 up 13.4%, the CSI 300 down 9.8%.
This is not a one-year story
The last time the gap looked this ugly was 2023: US up 26.3%, CSI 300 down 9.1%, a 35-point spread. That was the year he started telling Chinese readers online to sell their A-shares and buy US index funds instead.
Stretch it to ten years and convert everything to dollars, and the S&P 500 returns 15.5% a year against 4.7% for the CSI 300. Ten points a year, compounded, adds up to two different lives.
The people getting stuck are people you know
A friend mentioned the other day that her college classmate back home had lost 500,000 yuan in A-shares, trapped in a junk company with no way out. The author dashed off a little doggerel: some get rich on US stocks, some stay stuck in Myanmar-style A-shares.
His advice comes in three lines: stay away from A-shares, stay away from Chinese ADRs, and write 'never touch A-shares' into the family rules. He even ranks the three unfilial acts of investing: betting on A-shares, betting against the US, and buying the dip in Hong Kong.
One commenter went further: the thing should never have been called a 'stock market' at all. A stock market belongs to a free capital market; a better name would be 'ancient Chinese luck-pulling, enter at your own risk'.
Ten years of divergence, landing on one person, is 500,000 yuan and one exit you can no longer take.
Why it matters
It turns an abstract market comparison back into something concrete: the same money over the same decade, and where you put it decides not just the return but whether you can walk away at all. 'Stay away from A-shares' here is not a mood; it is arithmetic, re-verified by the numbers.



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