Most periods of excessive booms end with speculative busts. The dotcom bust of 2000 produced a recession so did the housing bust of 2008. Today's poster child seems to be bitcoin. Just as the internet was here to stay back in 2000 so is block chain technology today. However crypto currencies are trading at levels suggesting they could become reserve currencies of the world replacing the dollar and that implies a reset on short order. It's never different and always the same:
The Incredible 13%-Yielding Junk Bond Fund That’s Backed By The Fed
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Those dark days did do one critical thing for the high-yield corporate-bond
market: made these so-called "junk bonds" too big to fail.
18 minutes ago