(Bloomberg) -- Bill Ackman is taking aim at two booming markets beloved by day traders: Highly-leveraged exchange-traded funds and zero-day stock contracts that have become one of the hottest options strategies on Wall Street.Most Read from BloombergThe Secret Formula for Faster TrainsMidtown Office Building Evacuated on Concerns of Wall CollapseIn Chicago, a Former Steel Mill Looks to Make a Quantum LeapNYC Tourist Helicopter Crashes in Hudson River, Killing SixInside the Quiet, Extravagant Exp...

As tariffs spiral between the U.S. and China, between China and Europe they are showing early signs of falling, potentially helping BYD and hurting Tesla. The European Commission in Brussels, which handles trade on behalf of the European Union, confirmed Friday it is in talks with Beijing about an alternative to its current tariffs on Chinese EVs. In a conversation Tuesday, EU trade commissioner, Maroš Šefčovič, and Chinese Commerce Minister Wang Wentao discussed the idea of price undertakings, whereby manufacturers agree to minimum prices, a spokesman said...