It´s been a while, since the SHORTS on bitmex was in majority for a such "long" period of time, last time this happened was in January at 30k levels and we know now, that in that moment the bottom was forming. When the premium/funding index is negative, whales are getting fees from those, who are in SHORT, that´s why it´s much wiser for them to push the price up. Next month May will be probably very strong bullish month for bitcoin.