Apart from reaching a new ATH, bitcoin is also regaining dominance vs other alts. It was halved between March and June and bitcoin has been slowly regaining it but lately seems to have received a boost.

Source: (
https://coinmarketcap.com/charts/#dominance-percentage)
Any ideas about why this is happening?
That is good to hear that the bitcoins are regaining their power again because having that image will of course boost the confidence of the people to futhermore hold their coins their bitcoins to be exact and that is also an investor magnet because if an investor knew that those coins are rising again they will start to invest in them again. So just see what will happen.