Realtor.com has monthly and weekly data on the existing home market.
For the week ending December 24th, active inventory was up 63.1% year-over-year (YoY), up from 58.1% YoY last week.
New listings were down 5.7% YoY, the smallest YoY decrease since July. This small YoY decrease in new listings might be related to the holidays.
Here is a graph of the year-over-year change in inventory according to realtor.com.
Last year, inventory was at record lows during the Winter. So, it is no surprise that YoY inventory measures are still increasing.