RIYADH: The Saudi stock exchange has approved the listing of SR14.95 billion ($4 billion) worth of government debt instruments submitted by the Ministry of Finance, it said in a statement. The amount will be used to increase the size of three existing issuances to reach SR26.4 billion, SR29.7 billion, and SR14.3 billion, respectively. The listing and trading of the instruments will start on May 29, Tadawul said in a statement.