SummaryMarqeta has filed terms for its $1 billion IPO.The firm provides credit card issuing products and related services to businesses worldwide.MQ is growing rapidly, producing copious free cash flow, and the IPO appears reasonably valued, so is worth a close look.Quick Take. The company provides customized credit card issuing and related services to businesses worldwide.MQ is growing top-line revenue impressively, is generating strong free cash flow, has a credible path to operating breakeven