Most of the market is consolidating their holdings into BTC in the hopes of catching the next major rise. This is the great alt purge many thought would come in a bear market. But instead, the rise of bitcoin in a bull market has forced the hands of whales that have moved into alts as a safe haven from volatility.
The market direction can shift quickly so a daily trade is required to stay in proper position. Move with the market at the big whales. As BTC gains dominance, hold BTC, as it loses steam, move into the alts. If your pain tolerance is high catching the bottom on most alts that have huge upside potential hold the most gains.