Cathie Wood, CEO & CIO of Ark Invest, and Rahul Bhushan, global head of investment products at Ark Invest, discuss the new suite of 'DIET' ETFs, as ARK moves into the fast-growing market for buffer ETFs. This week Ark is launching the first fund, ARK DIET Q4 Buffer ETF (ticker: ARKT). Three more will be launched next year at the start of each quarter. ...