Although analysis of a single factor and cryptocurrency combination, as above, is of interest, more general findings across multiple cryptocurrency/factor combinations can also be pursued. Fig 7 shows, for each cryptocurrency and factor combination, the mean coherence values during the bubble and non-bubble regimes. Each horizontal subplot shows a different coherence period band, from the lowest period band (2–4 days) at the top to the highest period band (256–512 days) at the bottom. As the duration of data for each cryptocurrency varies, certain ranges are left blank when that cryptocurrency does not have enough data to produce values for such bands.
BEIJING (AP) — China’s central bank on Friday declared all transactions involving Bitcoin and other virtual currencies illegal, stepping up a campaign to block use of unofficial digital money.

Clear regulation would mean the removal of a “significant roadblock for cryptocurrency,” says Wang, since U.S. firms and investors are operating without clear guidelines at the moment.
“I think it’s really important to keep your eyes open,” Johnson says. “Don’t get the FOMO at a fever, because it’s very volatile. No one should invest anything that they can’t afford to lose, and that’s the same advice I give for any kind of an investment.”