For the typical lender, mortgage rates today are essentially unchanged from yesterday. According to yesterday's late-day revisions, some are doing better while others are doing a little worse

This refers to the occassionally occurring requirement for a mortgage lender to alter its rates in the midst of a business day in reaction to market conditions.

In other words, if bonds lose value, it gets more expensive for lenders to offer any given rate, so they may choose to slightly raise rates to make up the difference.

Yesterday, that's what went down. Lenders who raised rates were able to keep them the same or even make them a little bit lower today.

Those who didn't vote had to raise their rates a little bit this morning. On average, nothing changed.

Today had some intraday volatility, but it swung both ways and rates ended up close to where they started. Average lender was higher.