About the Fannie Mae Weekly Mortgage Applications Data
The Purchase Application-Level Index (PALI) and Refinance Application-Level Index (RALI) are weekly series that source data from Fannie Mae’s automated underwriting system, Desktop Underwriter® (DU®), to provide timely and ongoing tracking of purchase and refinance activity and historical trends.
The PALI and RALI were created to provide sharper insights around future mortgage market activity, including purchase mortgage, refinance mortgage, and agency securitization activity. The indices leverage DU loan application data to provide market participants with current insights into the direction and scope of market purchase- and refinance-application activity. Utilizing DU's broad market footprint, the PALI and RALI also provide a broad historical view of purchase and refinance application activity.
Learn more about PALI and RALI in the following materials:
