SLIDING SHARES

Aramco’s 14% stock decline saps market value, stresses investors

The disappointing share performance in Riyadh led Morningstar to give a 'hold' recommendation for the world's biggest oil company

FAYEZ NURELDINE/AFP via Getty Images

Aramco gas station on the outskirts of the Saudi capital

Investors are expressing concern about Aramco’s sliding stock, which has sapped value from the world’s biggest oil producer as shares of competing companies rise.

Saudi Arabia-owned Aramco’s 14% decline has cut more than $133 billion this year from...