LAGOS — Dangote Petroleum Refinery has extended its initial public offering by two weeks with the approval of the Securities and Exchange Commission. The offer opened on 14 September and was due to close on 13 October. It comprises 4.1 billion shares at N525 each, with a minimum subscription of 10 shares. The company said the proceeds will fund the expansion of the 700,000 bpd refinery. Aliko Dangote said subscriptions were several times the original target.