CHICAGO — Kiser Group has brokered the sale of a three-property apartment portfolio in Chicago’s South Shore neighborhood for $18.4 million. The transaction was the largest by dollar amount in the submarket in the last 15 years, according to CoStar Group. The portfolio includes the 130-unit 7500 S. Shore built in 1950; the 53-unit S. Clyde built in 1928; and the 25-unit 7038 S. Chappel constructed in 1926. Monthly rental rates range from $525 to $1,515. Noah Birk and Aaron Sklar of Kiser represented the seller, DAX Real Estate. An undisclosed buyer purchased the portfolio.