 SP MidCap 400 constituent Nordson Corp NASDAQ: NDSN looks to replace Xilinx Inc NASDAQ: XLNX in the SP 500 effective before the opening of trading on Tuesday, February 15. SP SmallCap 600 constituent PDC Energy Inc NASDAQ: PDCE will replace Nordson in the SP MidCap 400, and XPEL Inc NASDAQ: XPEL will replace PDC Energy in the SP SmallCap 600. 