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A comment on Amazon Reports First Quarterly Loss in 4 Years. Parent comment

Re:Amazon Reports First Quarterly Loss in 4 Years by mylittlepony on Thursday October 25, 2012 @10:12PM (#4700516)
Diversification does reduce the risk of losing it all, as it changes the probability distribution (https://en.wikipedia.org/wiki/Probability_distribution). It also reduces the probability of winning a lot, but people like stability.
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Re:Amazon Reports First Quarterly Loss in 4 Years by confluence on Thursday October 25, 2012 @10:47PM (#4700610)
Only if the assets are uncorrelated and independent.

Otherwise diversification often gives a false sense of security with higher systemic risk (see GFC).

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Re:Amazon Reports First Quarterly Loss in 4 Years by Someone on Friday October 26, 2012 @06:34AM (#4701608)
Not "Only if the assets are uncorrelated and independent", but "As soon as the assets are not 100% correlated".

That is a huge difference. The dot com bust affected (almost) all tech stocks, but they didn't all go bankrupt.

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