Aluminium and zinc prices were also in the red. Because of this, Rio Tinto Limited ( ASX: RIO ) and OZ Minerals Limited ( ASX: OZL ) shares could come under pressure today. TPG Telecom rated as a sell. The shares of TPG Telecom Ltd ( ASX: TPM ) have been tipped as a sell by analysts at Goldman Sachs. According to the note, Goldman thinks that TPG Telecom is facing competitive pressures across each of the markets it operates in (Mobile, Fixed, and Enterprise). It has placed a $4.70 price target on its shares. Market update released by McMillan Shakespeare. The shares of McMillan Shakespeare Limited ( ASX: MMS ) will be on watch on Wednesday after the salary packaging company released a market update after the ASX closed on Tuesday.