2008 10k investment in SDS = 348 in 2018.
If the market returned to 2008 levels the investment would be at around = 1, 700.
Wow, that's a big difference between 10,000 and 1, 700. What happened? What magic took place here? How could this be? I'll tell you the secret, wait for it, the secret is that leveraged ETFs suffer from deterioration. Tada. That's the truth. That's what for some reason you really don't want to admit. In choppy markets, that deterioration happens at a far quicker pace, than in a directional market.