Bengaluru: Financial marketplace Paisabazaar is expanding its wealth business with mutual funds as part of a broader move to diversify beyond unsecured credit, which accounted for almost all its revenue about 18 months ago, chief executive Santosh Agarwal told ET.The PB Fintech-owned marketplace, which added fixed deposits and bonds last year, currently gets around two-thirds of its revenue from unsecured credit and a third from secured