ARK Innovation ETF (NYSE:ARKK) down nearly 12% at one point before the market stabilized. Yet the ARKK fund is now down more than 14% from its February high in less than two weeks, and Seabreeze Partners Management president and ARKK short seller Doug Kass says the worst may be yet to come. Kass Sees Risk: On Tuesday, Kass said ARK fund manager Cathie Wood has been overly aggressive in investing in overvalued, momentum-driven story stocks. The explosion in ARK’s assets under management, including $20 billion in inflows in the last three weeks, has now created an extremely risky situation, he said.