Views diverge on how long the central bank will keep rates high.
Buffer funds can shield against a wide range of losses should their respective gauges drop.
Traders dumped $3.1 billion from the Invesco QQQ Trust Series 1 ETF on Friday.
The bulk of that inflow comes from a $787 million cash influx last week.
Investors in the flagship ARK Innovation ETF have mostly been left out of this year's blistering 161.58% rally.
The fund invests in 'harder to reach' bonds such as high-yield and emerging market debt.
The structure allows mutual funds to act like ETFs by generating returns for investors while minimizing taxes.
All but one of ARK's U.S.-listed ETFs have experienced net outflows thus far in 2023.
The losses could offset the tax bill on future gains, she said.
Some investors caution that the Fed doesn't focus on whether the market is up or down.