Ark Invest's Cathie Wood is known for investing in disruptive innovation. The super investor has placed big bets on artificial intelligence (AI), which is widely regarded as one of the most disruptive and transformative technologies today. Speaking of AI stocks, it's hard to ignore what Nvidia Corp. (NASDAQ:NVDA) has been doing. Shares of the chipmaking giant have surged 187% so far this year, and the company crossed $1 trillion in valuation. Ark Invest's flagship fund Ark Innovation ETF (NYSE:A