I wonder, give me a logical explanation because it doesn’t make sense to me.
Total crypto cap went from around 202 to 209.000.000.000
People sold everything,
including alts, and bought Bitcoin during the rise/pump.
Now the time gets closer to 2X, many fear that a dump/correction may happen, so they went back to alts. Since they didn't sell BTC for fiat, the price is not affected.
Of course, I may be horribly wrong, it's a bit too early for me yet.
Edit: (@NorrisK) I've noticed later that indeed 2X got cancelled (wonderful news!!). However, while I found late, other did the same. I think that people indeed started buying alts, which did not make Bitcoin price fall (vs fiat), but make alts price rise. Now, since 2X was cancelled, maybe the move into altcoins was too early.