ProPublica's Jake Bernstein and Jesse Eisinger and NPR's Planet Money are collaborating on an investigation about the inner workings of the Wall Street CDO industry. For more details, see their story today about how nearly three years on, the SEC is asking basic questions about key players in the meltdown.

If you were involved in the CDO business during the end days of the boom, please contact Jake and Jesse -- [email protected] or (917) 512-0258. Or, if you have information about others we should reach out to, please send that along, too.