ARKK is Cathie Woods' ETF ..... it has been a very poor performer recently and over the long term. She had a great year in 2020, but otherwise has been underperforming the broader market badly. For the trailing 5 year period her fund is roughly unchanged while the S&P500 has nearly doubled. Check the long term chart.
ARK Innovation posted a negative 11.6% total return this year so far, says Morningstar Direct. That makes it the fourth worst-performing actively traded U.S. diversified ETF this year.