Its currently sitting at about 53%. Its simply mind-blowing that even at record prices for BTC, all the altcoins are rising at break-neck speeds, which I assume is largely due to the dark hand of Wall Street. And as BTC is simply long overdue for a correction, I suspect BTC's dominance could fall within a matter of weeks, if not days..
"To HODL or not to HODL, that is the question." - Shakeyhandspeare
I think it will either be within a few days or if not it will be a few months time, alts may make it above 50% during this pump that they're enjoying but bitcoin is readying itself to pump above 20k and then alts will have a period where they suffer. So if not before then then when bitcoin pauses again at whatever price that may be and alts enjoy their day.