They are a little-known presence in many operating rooms, offering technical expertise to surgeons installing new knees.
Abax Investments is giving precious-metal stocks the short end of the stick.
Nigeria's money-changers are going underground as the authorities try to bolster the naira and crush a black market for foreign currency.
Forget the stagflation of the 1970s. Higher oil prices would be a boon for the global economy, according to Goldman Sachs.
SA's revenue service stands accused of holding the economy to ransom as VAT refunds are delayed - sometimes for up to a year.
Some of South Africa's most popular online retailers found themselves buckling under #BlackFriday pressure as early as 7am.
Today is all about hunting for bargains as the festive shopping season kicks off - and SA's retailers are making the most of it.
Mampho Modise explains why South Africa should care about its credit rating.