According to Zillow data, the 30-year fixed-rate purchase loan fell 7 basis points to 6.58%, while the 15-year fixed purchase loan increased by 1 basis point to 6.01%. The 5/1 adjustable-rate mortgage (ARM) purchase rate saw a larger drop of 20 basis points to 6.31%, continuing its trend of significant daily fluctuations compared to fixed-rate counterparts.