Hiding a mistake that you have made is probably one of the cardinal SINS in the business.

隐瞒你犯的错误大概是这一行业最不可宽恕的罪过。

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In fact, many of the cardinal sins of financial excess seem to be part-and-parcel of the ETF business these days: extreme leverage, market manipulation and tax bills that can blindside unsuspecting investors, to name a few.

FORBES: How To Avoid ETF Pitfalls