John Authers, Columnist

Bitcoin Is the Tulipmania That Refuses to Die

The speculative frenzy for the best-known cryptocurrency keeps on coming back for more.

Prettier, but more perishable than digital assets.

Photographer: Carsten Koall/Getty Images 

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There is no particular reason why we should care about records and round numbers in the markets. They just play to human heuristics; mental shortcuts. But we plainly do care about them, so here is a roundup of a landmark-strewn passage of trade.