UiPath (PATH) made headlines for investors this week when S&P Dow Jones Indices ($INX) announced that the automated software company will become part of the S&P MidCap 400 Index (IJH) ahead of Friday's opening bell on Jan. 2. UiPath will replace Synovus Financial (SNV), which is being acquired by Pinnacle Financial Partners (PNFP). Index increases may not always be big news, but they are significant nonetheless. Passive funds that follow the MidCap 400 will have to purchase additional shares of the compa ...