Johannesburg - South African bonds displayed a mixed bias in midday trade on Friday, in what a trader described as a quiet session. The benchmark R157s were slightly softer and the R207s were a tad firmer. At 11:50, the benchmark R157 bond was trading at 6.345% from Thursday's close of 6.340%. The R207 was trading at 7.550% from a previous close of 7.565% and the R186 was trading at 8.280% from its close of 8.305%. The rand was bid at 8.3378 against the dollar from yesterday's close of 8.3506. "Not much on the go here. I think after the rates call yesterday markets are just taking a breather. We'll continue to watch the rand," a trader said. With no local data due today, markets will continue to take their direction from their global counterparts. On Thursday, the Sarb left the repo rate unchanged at 5.5.% Foreigners were net buyers of R458.202m of South African bonds including repo transactions on Thursday after net sales of R870.788m of local bonds on Wednesday, data released by the JSE shows. Nominal cumulative volume was R60.621bn on Thursday from R63.119bn on Wednesday. Foreigners were net buyers of R371.208m of South African bonds excluding repo transactions on Thursday after net sales of R813.932m local bonds on Wednesday. For the year to date foreigners have been net buyers of R38.147bn of local bonds, excluding repo transactions. In 2011 they were net buyers of R47.359bn worth of local bonds, excluding repo transactions. In the year to date foreigners have been net buyers of R34.215bn of local bonds including repo transactions. In 2011 they bought R37.501bn worth of local bonds.