** Civil infrastructure co Construction Partners' ROAD.O shares up 2.9% before the bell on Fri at $105.41 as it's set to join S&P SmallCap 600 index .SPCY next week

** ROAD to replace Molina Healthcare MOH.N in SPCY effective Weds, Jul 22, S&P Dow Jones Indices said late Thurs

** MOH moving to S&P MidCap 400 index .IDX to replace National Storage Affiliates Trust NSA.N, which is being bought by Public Storage PSA.N in $10.5 bln deal

** Shares of health insurer MOH closed at $224.82 on Thurs and have yet to trade premarket

** Stephens analyst Melissa Roberts said in a note she expects passive funds will need to buy 6.5 mln ROAD shares, implying about 10 days of purchasing demand

** Dothan, Alabama-based ROAD has ~56.5 mln shares outstanding for $5.8 bln market cap

** Through Thurs, ROAD shares down ~6% YTD and ~32% below record intraday high of $151 achieved on May 8

** 5 of 7 brokers rate the stock "strong buy" or "buy", 2 "hold"; median PT $140, per LSEG data