Last 5 years of performance (Morningstar):
ARKK +87.34% +3.51% +35.58% +152.82% -2.58%
QQQ +32.66% -0.12% +38.96% +48.62% +23.50%
I also calculated the cumulative return per annum for last 5 years & since start date (10/30/2014):
20141030 arkk 30.68 qqq 21.8 vot 20.7 tqqq 56.5
20161114 arkk 43 qqq 27.7 vot 20.1 tqqq 75.3
VOT = Vanguard Mid-Cap Growth
TQQQ = Direxion 3X QQQ
Since ARKK is classified I compared it to the mid-cap growth index.
My interpretation of the results and looking at the charts is that her hyper growth play really outperforms when there is deflation and any hint of prolonged inflation means that these stocks will under perform by a lot. I believe she even stated that on some interviews I saw with her on CNBC.
ARKK is down 22.7% from the 2/16/2021 high whereas the QQQ is up 18.6% since then. That is a 41.3% underperformance. Even the VOT is up 15%.

ARKK +87.34% +3.51% +35.58% +152.82% -2.58%
QQQ +32.66% -0.12% +38.96% +48.62% +23.50%
I also calculated the cumulative return per annum for last 5 years & since start date (10/30/2014):
20141030 arkk 30.68 qqq 21.8 vot 20.7 tqqq 56.5
20161114 arkk 43 qqq 27.7 vot 20.1 tqqq 75.3
VOT = Vanguard Mid-Cap Growth
TQQQ = Direxion 3X QQQ
Since ARKK is classified I compared it to the mid-cap growth index.
My interpretation of the results and looking at the charts is that her hyper growth play really outperforms when there is deflation and any hint of prolonged inflation means that these stocks will under perform by a lot. I believe she even stated that on some interviews I saw with her on CNBC.
ARKK is down 22.7% from the 2/16/2021 high whereas the QQQ is up 18.6% since then. That is a 41.3% underperformance. Even the VOT is up 15%.
