Dangote’s refinery IPO could transform—and concentrate—Nigeria’s stock market

Dangote opened an IPO intended to raise more than $4bn at about a $50bn valuation, subject to demand. Semafor reports that the refinery could represent up to 40% of the Lagos exchange’s capitalization when trading begins, expected in November.

The pitch includes US-dollar dividends. The industrial strategy is to replace fuel imported into Africa from more distant suppliers, supported by a planned $14bn expansion intended to double the Nigerian refinery’s output by early 2029.

Those are plans and fundraising targets, not completed outcomes. The offer runs into next month, while construction and operating execution stretch much further out.

The IPO could deepen African capital markets while simultaneously making Nigeria’s exchange much more dependent on one company. My interpretation is that greater market size and greater diversification should not be confused: a landmark listing can improve access to investment while concentrating exposure to a single industrial project.