Invesco New York AMT-Free Municipal Bond ETF(AMEX:PZT)

PZT aims to deliver higher yield by holding longer-dated securities. The fund targets exclusively long-maturity (15+ years) municipal bonds, but do note that long-dated issues ratchet up the interest rate risk. Nevertheless, investors who are willing to bear this risk can typically benefit from a bump in yield. PZT also expands its geographical reach outside of New York, as it also hold bonds in any US territory like Puerto Rico and Guam. The underlying index is weighted by market value, and is rebalanced and reconstituted monthly.