With some coins going up 50% or even l00% in a day or few days or in a week... any reason why bitcoin doesn't do that almost ever? Look at binance coin and many of those other coins that are literally doubling in a week. Now the btc dominance is going so low. And even when btc goes up... you don't ever see it going up that much percent in a week. I mean... its rare to see bitcoin say go up 50% in a week yet tons of altcoins do it.
For altcoins there is often a price increase of up to 100% in a week but for Bitcoin it is not that easy to go up 100% in a week because the price of bitcoin is very expensive and buyers cannot afford to buy bitcoin if that happens. In general, Altcoins have very cheap prices so that buyers can buy them in very large quantities, so it's only natural that Altcoins can go up to 100%.