iShares Gold Trust (IAU) is an ETF issued by ishares in 2005 with an expense ratio of 0.25%. It tracks gold bullion. The AUM of the fund is 13.15B and it just hit a 52-week high. The implied volatility (IV) of the 30 day ATM has increased from 9% to 15%, which is its 52 week high also. The ATM straddle premium is 4.11% near it yearly high of 4.55%. The put call ratio (based on open interest) is 0.02.