The Max S&P 500 4X Leveraged ETN (SPYU) is the first and only exchange-traded product in the U.S. market that applies leverage to target a daily return of… wait for it… 400% of the S&P 500 Index’s ($SPX) return. There are 4x and even 5x ETFs in Europe, and if you are wondering how the folks there ended up with access to all of that “juice” before we in the United States did, I’m right there with you. But you see, I don’t look at SPYU as some wild and crazy ETF, with its fancy 400% feature. Instead, I look ...