[1]PowerShares Capital Management LLC, et al.; Notice of Application, Release No. IC-28140 (February 1, 2008), 73 Fed. Reg. 7328 (February 7, 2008) (notice); PowerShares Capital Management LLC, Release No. IC-28171 (February 27, 2008) (order). The SEC issued orders to Bear Stearns Asset Management, Inc., Barclays Global Fund Advisors, and WisdomTree Trust on the same day.
Leung, Tim (2014). «Implied Volatility of Leveraged ETF Options». Applied Mathematical Finance, Taylor & Francis. SSRN2164518Em falta ou vazio |url= (ajuda)