Roubini calls gold a "Hyperbolic Bubble"

Everybody's favorite gloom 'n doomer said that gold was in a hyperbolic bubble, and asked this question today, "How much of gold long positions are financed now, as Nasdaq was in late '90s, with leverage? Do CME data show that?"

https://www.businessinsider.com/roubini-gold-is-in-a-bubble-2011-8#ixzz1Vs8OZPtB

For all the many reasons repeated daily on this site, it is unlikely that gold is actually in a bubble, but what about his question re: leverage? It's a fair question to ask, and I'd be curious to hear the answer.