This week might be one of the last opportunities this year for investing in Build America Bonds. New York City, the Massachusetts School Building Authority and the District of Columbia all plan to issue BABs this week. "They are no longer a novelty. The appetite has not abated ... there is still plenty of demand for BABs," said Peter Delahunt, national institutional sales manager at Raymond James & Associates. "There's still a big demand for municipals as evidenced by the continued healthy cash inflows into the municipal bond funds, but the BABs are taking away from what could have been more supply of tax-exempt bonds 20 years and out."