Shoprite chair Christo Wiese uses them, Capitec director Michiel le Roux finds them useful and Redefine director Harish Mehta feels the same. Netcare CEO Richard Friedland does not appear to have used them very well. In the year to date, directors at Invicta, Curro, Fortress Reit and Redefine Properties have all revealed themselves to be fans of the collar.

"Collars" have been part of institutional share-trading strategies for decades, but they are now increasingly being used by people seeking to raise cash against the value of their shares in a downbeat market...

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