Currency investors risk leaving money on the table if they don'tsubmit claims on a $2.1 billion pot of settlement money paid bybanks accused of rigging foreign-exchange rates.

That's the message from Battea FX Group, which is competing inthe business of advising clients on how to get their share of thepayouts. Its seven former FX traders and executives are helpingfirms recover funds from class actions claiming that some of theworld's biggest banks conspired to manipulate the $5.1trillion-a-day currency market. Fourteen banks have settled,including Bank of America Corp., Barclays, Citigroup Inc., HSBCHoldings and Royal Bank of Scotland Group.

Here's how it works: Companies that traded currencies with thedealers from 2003 to 2015, including hedge funds, asset managers,pension funds, corporations and even other banks, hire Battea orone of its competitors. The advisory firm crunches data from dealsin spot, forwards, options, swaps and futures markets, seekingto recover as much money as possible via a court-appointed claimsadministrator, and it gets a contingency fee based on the amountawarded.