South Africa’s largest stock‑exchange operator is tightening controls over how brokers and trading firms can access its bourse. The move targets rogue algorithms and trading errors that could unsettle the market.

By tightening oversight, the exchange aims to curb flash crashes and ensure fair access for all participants. Regulators fear that unchecked algorithmic activity can amplify volatility and erode investor confidence.

The new rules will require firms to submit detailed algorithmic strategies for review and impose stricter back‑testing standards. Brokers must now demonstrate robust fail‑safe mechanisms before gaining market access.

These changes signal a shift toward higher compliance standards and may prompt other African exchanges to follow suit. Market participants will need to adapt their trading infrastructure to meet the new regulatory expectations.