Frustrated traders, unable to buy and sell shares on the JSE after a “network issue” floored the stock exchange on Monday morning, will be relieved to hear that the market will begin trading again at 11.30am.

“Due to a network issue, the equity market opening will be delayed this morning,” the bourse said on Twitter soon after the market was due to open on Monday. “All other JSE markets are not affected.”

An hour later, just after 10.30am, the JSE tweeted that its team “continues to investigate the equity market network issue with its service providers”. It apologised for the issue.

“Even though the JSE equity market is not yet open, members can still trade offshore and report the trades to the JSE trading system,” it said.

At 11am, the bourse said that it had resolved the issue. “The opening auction will run from 11am to 11.30am, after which the market will open for trade,” a spokesman said.

“The JSE continues to investigate the root cause of the network issue and will be applying further possible corrective actions with its service providers,” the spokesman said. “We are aware of the impact to our clients and apologise for any inconvenience.”