This is pretty significant - Wellington is a very old private firm. For example they created the mutual fund back in 1929. The guy that started Vanguard came from Wellington. Fun Fact they are the only Asset Management firm that makes people wear ties year round.
They are also very forward looking. They make their own software, and they have been in the process for several years of moving their data centers to AWS (Amazon) - ie trusting AWS with billions of dollars daily in trading.
Just as a side note - I worked for Wellington for a few years