Despite expecting some support or temporary relief rally at the 50 or 200 Day MA "golden cross" level, on the Daily chart dominance is today failing to bounce back. While I'd imagine a re-test of the yellow area upto 63.5%, or break-down level around 64.6%, the selling momentum into altcoins remains strong.

Bitcoin dominance bounced back to 64.4%, 0.2% from breakdown level, somewhat as expected. A break back below the 200 Day MA would be bearish again:

What's known as a "death cross" occured on the 4hr chart (bearish), the 50 MA moving below the 200 MA, that dominance rallied towards and got rejected by. This is contrast to the Daily chart having a
golden cross (bullish) only a few days ago, hence lack of confluence in time-frames right now.

On the Weekly time-frame, dominance remains very bearish. Despite the wick at the bottom of the current candle, indicating some buying pressure (selling altcoins pressure), this week is currently threatening to close below the 50 Week MA (64%) as well as 100 Week MA (63.5%) (approximately 1 and 2 year MAs). This would make a re-test of the 200 Week MA (approx 4 Year MA) around 60.8% of most likely outcome in this event.

Currently still selling Bitcoin for Ethereum, buying the ETH/BTC dip at a 25-35% discount quite happily. A break below 60% again would likely lead to somewhere towards 55% (the support trend-line of the broadening descending wedge pattern).

AltSeason 2021?