LONDON: Top oil exporter Saudi Arabia told OPEC it raised its oil production in September by 100,000 barrels per day, adding to signs it has yet to respond to a drop in prices well below $100 a barrel by trimming output.

In a monthly report issued Friday, the Organization of the Petroleum Exporting Countries (OPEC) said Saudi Arabia reported September production of 9.704 million barrels per day (bpd), up from 9.597 million in August.

The lack of a Saudi output cut could add to perceptions that the kingdom is looking to defend market share…