Robert McLister·General·January 29, 2008Alt-A Mortgages Alt-A mortgages are mortgages that are more risky than prime but less risky than subprime. More… Like news like this?Join our CMT Updates list and get the latest news as it happens. Unsubscribe anytime. SUBSCRIBE! Thank you for subscribing. One more step: Please confirm your subscription via the email sent to you.