Don Kaufman here. 

Most traders got caught up in the headlines Friday.

Trump threatened China with tariffs. Tech stocks crashed. The Dow dropped 560 points.

But here's what actually mattered - and why I was positioned perfectly while others got blindsided.

The Real Story Was Hidden in the Derivatives Market…

When that first wave of selling hit, the S&P dropped 40 points. Volatility futures barely moved - one point higher on a 40-point drop.

The second wave changed everything.

Volatility futures went parabolic. From 18.5 to 20+ in minutes. That's when I knew we had a real problem.

Most traders think volatility reacts to selling. That's backwards.