It's a fluid situation in financial markets on Wednesday. The 2-week ceasefire in the Iran war caused a big reaction last night, but the benefit to the bond market (bonds dictate rates) has been increasingly wiped out during domestic hours. 

If we measure the reversal versus yesterday's closing levels at 5pm ET, the reversal is almost complete. But bonds were already rallying in the afternoon due to expectations for the official ceasefire news. All that to say, we're still in noticeably better shape than we were mid-day yesterday, but the overall improvement is smaller than most borrowers would expect.

In fact, the average top-tier 30yr fixed rate is just barely at the low end of April's range at 6.40% vs the previous low of 6.41% on April 2nd. Earlier today, it was as low as 6.38%, but mortgage lenders made mid-day changes in response to bond market deterioration.