. as a result , the mix of our average assets under supervision during 2017 shifted slightly from liquidity products to long-term assets under supervision compared to the mix at the end of 2016 . 2018 versus 2017 . net revenues in investment management were $ 7.02 billion for 2018 , 13% ( 13 % ) higher than 2017 , primarily due to significantly higher incentive fees , as a result of harvesting