Bond and credit specialists overseeing more than a quarter of the $40 trillion U.S. fixed-income market have spoken: JPMorgan Chase & Co. is still No. 1 in research.

Based on 1,900 survey responses, the bank extends its reign for a ninth year in Institutional Investor’s 2018 All-America Fixed-Income Research Team, leading a pack of providers that is virtually unchanged from 2017. Each of the top five firms earned roughly the same number of team positions as last year with the exception of second place finisher Bank of America Merrill Lynch, which improved from 41 to 46 and edged closer to JPMorgan’s 52 ranked analysts.

Wells Fargo, Barclays, and Citi rounded out II’s top five research firms.

Survey respondents selected the top firms across three categories – high yield, investment grade, and economics and strategy categories – comprising 61 total investment sectors.