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(RTTNews) – S&P Dow Jones Indices said that Monolithic Power Systems Inc. (MPWR) will replace TechnipFMC plc (FTI) in the S&P 500, S&P SmallCap 600 constituent Iridium Communications Inc. (IRDM) will replace Monolithic Power Systems in the S&P MidCap 400, and Collegium Pharmaceutical Inc. (COLL) will replace Iridium Communications in the S&P SmallCap 600 effective prior to the opening of trading on February 12.

TechnipFMC is being removed from the S&P 500 in anticipation of its announced spin-off of Technip Energies in a transaction expected to be completed on or about February 16. Technip Energies is expected to trade in ADR form in the OTC or over-the-counter market.