Patrick Boyle is a youtuber that ...
Actually he's a professor of finance and a hedge fund manager, so he has much stronger credentials than most people talking investments on YouTube.
"Boyle is the Founder of Palomar Capital Management, a UK-based hedge fund. He is a professor of finance at King’s Business School King's College London"
https://en.wikipedia.org/wiki/Patrick_Boyle_(financier)
I actually found it insightful in the way it illustrates how much in fees Cathie Wood and her team make from the fund, irrespective of performance. And for those who aren't going to watch the entire video, the most fees ($200m) at the time when the fund is just on the cusp of losing most of it's value.
His general point is correct, that ARKK's 0.75% expense ratio resulted in more profits for ARK funds in 2021 than in 2020. But it's wrong to take the peak NAV and claim fees for a year were based on that NAV. From that video:
"This is because the Disruptive Innovation ETF started out 2020 with under $2 billion assets under management."
"At the peak in 2021, fees would have been over $200 million dollars, and this is because so much more money had come in"
https://www.youtube.com/watch?v=cBxysC62tK8&t=116s"Investment management fees for exchange-traded funds (ETFs) and mutual funds are deducted by the ETF or fund company, and adjustments are made to the net asset value (NAV) of the fund on a daily basis."
https://www.investopedia.com/ask/answers/071816/how-are-etf-fees-deducted.aspIt was sloppy of Professor Boyle to use the peak NAV to calculate expense ratio for all of 2021, when average NAV comes much closer to the daily NAV actually used to calculate fees. ARKK's peak NAV only represented a matter of 1-2 weeks in 2021 - nowhere close to the entire year. You can see for yourself on the graph provided in his video, which appears about 15 seconds into the link above. Estimating the average from looking at the graph, I'd put it somewhere between $20 billion and $24 billion, so fees would likely be closer to $160 million. As a professor he should at least identify when he's doing a sloppy, incorrect calculation.
That said, Professor Boyle's general point stands: ARKK received far more in fees in 2021, a losing year, than in 2020, a year it became famous for +150% performance.