Institutional interest in prediction markets has not been in doubt for a while. JPMorgan's Jamie Dimon told CBS in April that the bank was weighing an entry, while describing most of the activity as closer to gambling than investing and ruling out sports and politics outright. Goldman Sachs chief executive David Solomon had used the firm's January earnings call to disclose meetings with both of the largest operators. Thus far, however, there has been little in the way of concrete progress to speak of.