Warren Buffett is building the Noah's Ark of rainy-day funds. Here's why he's stacked up more than $300 billion.
Briefly

"I have heard every speculative idea imaginable, from accumulating capital for a doomsday scenario to planning to make a gigantic cash dividend. Both seem far-fetched."
"The most likely cause of cash buildup at Berkshire is absence of attractive capital deployment opportunities. Stocks have surged to record highs, private-business valuations have jumped."
Read at Business Insider
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