UPDATE:
For many months WHALES have accumulated Bitcoin on the Alt-Coin/BTC pairs by slowly stair stepping down the price of Alt-Coin/BTC pairs. WHALES cannot accumulate a sufficient amount of Bitcoin on the BTCUSD and/or BTCUSDT pairs. They (Whales) must utilize the Alt-Coin/BTC pairs to accumulate Bitcoin. Well, that Phase utilizing Alt-Coin/BTC pairs to accumulate Bitcoin is coming to a close.
Now, WHALES are selling quite a bit of Bitcoin they accumulated over these many months. They are selling their Bitcoin for USD and USDT. Why? To accumulate enough USD and USDT to eventually begin pumping Alt-Coin/USD and Alt-Coin/USDT pairs. But for now, < in regard to Alt-Coin/USD pairs > they are slowly accumulating more Alt-Coins on the Alt-Coin/USD pairs and Alt-Coin/BTC pairs before they begin to eventually pump Alt-Coin/USD pairs along with Alt-Coin/BTC pairs.
This means we will slowly begin to see Bitcoin Dominance decrease due to Whales selling their Bitcoin for USD to buy Alt-Coins; as well as using a significant amount of their Bitcoin to buy Alt-Coins on the Alt-Coin/BTC pairs.