For the week in Chicago here are the number of closings versus new listings.
Market Conditions 12.11

The amount of inventory is down slightly from last month.
Market Conditions Inventory Chicago 12.11

For The median close prices, please note that type 1 : Condo and Townhomes, type 2: Single Family homes, Type 3 is multiunits.
Market conditions chicago listings closings

All data courtesy of CAR - Chicago Association of Realtors